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Eric Dumazet [Wed, 6 Mar 2019 18:41:00 +0000 (10:41 -0800)]
fou, fou6: avoid uninit-value in gue_err() and gue6_err()
My prior commit missed the fact that these functions
were using udp_hdr() (aka skb_transport_header())
to get access to GUE header.
Since pskb_transport_may_pull() does not exist yet, we have to add
transport_offset to our pskb_may_pull() calls.
BUG: KMSAN: uninit-value in gue_err+0x514/0xfa0 net/ipv4/fou.c:1032
CPU: 1 PID: 10648 Comm: syz-executor.1 Not tainted 5.0.0+ #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x173/0x1d0 lib/dump_stack.c:113
kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:600
__msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313
gue_err+0x514/0xfa0 net/ipv4/fou.c:1032
__udp4_lib_err_encap_no_sk net/ipv4/udp.c:571 [inline]
__udp4_lib_err_encap net/ipv4/udp.c:626 [inline]
__udp4_lib_err+0x12e6/0x1d40 net/ipv4/udp.c:665
udp_err+0x74/0x90 net/ipv4/udp.c:737
icmp_socket_deliver net/ipv4/icmp.c:767 [inline]
icmp_unreach+0xb65/0x1070 net/ipv4/icmp.c:884
icmp_rcv+0x11a1/0x1950 net/ipv4/icmp.c:1066
ip_protocol_deliver_rcu+0x584/0xbb0 net/ipv4/ip_input.c:208
ip_local_deliver_finish net/ipv4/ip_input.c:234 [inline]
NF_HOOK include/linux/netfilter.h:289 [inline]
ip_local_deliver+0x624/0x7b0 net/ipv4/ip_input.c:255
dst_input include/net/dst.h:450 [inline]
ip_rcv_finish net/ipv4/ip_input.c:414 [inline]
NF_HOOK include/linux/netfilter.h:289 [inline]
ip_rcv+0x6bd/0x740 net/ipv4/ip_input.c:524
__netif_receive_skb_one_core net/core/dev.c:4973 [inline]
__netif_receive_skb net/core/dev.c:5083 [inline]
process_backlog+0x756/0x10e0 net/core/dev.c:5923
napi_poll net/core/dev.c:6346 [inline]
net_rx_action+0x78b/0x1a60 net/core/dev.c:6412
__do_softirq+0x53f/0x93a kernel/softirq.c:293
invoke_softirq kernel/softirq.c:375 [inline]
irq_exit+0x214/0x250 kernel/softirq.c:416
exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536
smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1064
apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:814
</IRQ>
RIP: 0010:finish_lock_switch+0x2b/0x40 kernel/sched/core.c:2597
Code: 48 89 e5 53 48 89 fb e8 63 e7 95 00 8b b8 88 0c 00 00 48 8b 00 48 85 c0 75 12 48 89 df e8 dd db 95 00 c6 00 00 c6 03 00 fb 5b <5d> c3 e8 4e e6 95 00 eb e7 66 90 66 2e 0f 1f 84 00 00 00 00 00 55
RSP: 0018:
ffff888081a0fc80 EFLAGS:
00000296 ORIG_RAX:
ffffffffffffff13
RAX:
ffff88821fd6bd80 RBX:
ffff888027898000 RCX:
ccccccccccccd000
RDX:
ffff88821fca8d80 RSI:
ffff888000000000 RDI:
00000000000004a0
RBP:
ffff888081a0fc80 R08:
0000000000000002 R09:
ffff888081a0fb08
R10:
0000000000000000 R11:
0000000000000000 R12:
0000000000000001
R13:
ffff88811130e388 R14:
ffff88811130da00 R15:
ffff88812fdb7d80
finish_task_switch+0xfc/0x2d0 kernel/sched/core.c:2698
context_switch kernel/sched/core.c:2851 [inline]
__schedule+0x6cc/0x800 kernel/sched/core.c:3491
schedule+0x15b/0x240 kernel/sched/core.c:3535
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x2ba/0x980 kernel/time/hrtimer.c:1679
hrtimer_nanosleep kernel/time/hrtimer.c:1733 [inline]
__do_sys_nanosleep kernel/time/hrtimer.c:1767 [inline]
__se_sys_nanosleep+0x746/0x960 kernel/time/hrtimer.c:1754
__x64_sys_nanosleep+0x3e/0x60 kernel/time/hrtimer.c:1754
do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x4855a0
Code: 00 00 48 c7 c0 d4 ff ff ff 64 c7 00 16 00 00 00 31 c0 eb be 66 0f 1f 44 00 00 83 3d b1 11 5d 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 e2 f8 ff c3 48 83 ec 08 e8 3a 55 fd ff
RSP: 002b:
0000000000a4fd58 EFLAGS:
00000246 ORIG_RAX:
0000000000000023
RAX:
ffffffffffffffda RBX:
0000000000085780 RCX:
00000000004855a0
RDX:
0000000000000000 RSI:
0000000000000000 RDI:
0000000000a4fd60
RBP:
00000000000007ec R08:
0000000000000001 R09:
0000000000ceb940
R10:
0000000000000000 R11:
0000000000000246 R12:
0000000000000008
R13:
0000000000a4fdb0 R14:
0000000000085711 R15:
0000000000a4fdc0
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:205 [inline]
kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:159
kmsan_kmalloc+0xa6/0x130 mm/kmsan/kmsan_hooks.c:176
kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:185
slab_post_alloc_hook mm/slab.h:445 [inline]
slab_alloc_node mm/slub.c:2773 [inline]
__kmalloc_node_track_caller+0xe9e/0xff0 mm/slub.c:4398
__kmalloc_reserve net/core/skbuff.c:140 [inline]
__alloc_skb+0x309/0xa20 net/core/skbuff.c:208
alloc_skb include/linux/skbuff.h:1012 [inline]
alloc_skb_with_frags+0x186/0xa60 net/core/skbuff.c:5287
sock_alloc_send_pskb+0xafd/0x10a0 net/core/sock.c:2091
sock_alloc_send_skb+0xca/0xe0 net/core/sock.c:2108
__ip_append_data+0x34cd/0x5000 net/ipv4/ip_output.c:998
ip_append_data+0x324/0x480 net/ipv4/ip_output.c:1220
icmp_push_reply+0x23d/0x7e0 net/ipv4/icmp.c:375
__icmp_send+0x2ea3/0x30f0 net/ipv4/icmp.c:737
icmp_send include/net/icmp.h:47 [inline]
ipv4_link_failure+0x6d/0x230 net/ipv4/route.c:1190
dst_link_failure include/net/dst.h:427 [inline]
arp_error_report+0x106/0x1a0 net/ipv4/arp.c:297
neigh_invalidate+0x359/0x8e0 net/core/neighbour.c:992
neigh_timer_handler+0xdf2/0x1280 net/core/neighbour.c:1078
call_timer_fn+0x285/0x600 kernel/time/timer.c:1325
expire_timers kernel/time/timer.c:1362 [inline]
__run_timers+0xdb4/0x11d0 kernel/time/timer.c:1681
run_timer_softirq+0x2e/0x50 kernel/time/timer.c:1694
__do_softirq+0x53f/0x93a kernel/softirq.c:293
Fixes:
26fc181e6cac ("fou, fou6: do not assume linear skbs")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Stefano Brivio <sbrivio@redhat.com>
Cc: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Buslov [Wed, 6 Mar 2019 15:50:43 +0000 (17:50 +0200)]
net: sched: fix potential use-after-free in __tcf_chain_put()
When used with unlocked classifier that have filters attached to actions
with goto chain, __tcf_chain_put() for last non action reference can race
with calls to same function from action cleanup code that releases last
action reference. In this case action cleanup handler could free the chain
if it executes after all references to chain were released, but before all
concurrent users finished using it. Modify __tcf_chain_put() to only access
tcf_chain fields when holding block->lock. Remove local variables that were
used to cache some tcf_chain fields and are no longer needed because their
values can now be obtained directly from chain under block->lock
protection.
Fixes:
726d061286ce ("net: sched: prevent insertion of new classifiers during chain flush")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Wed, 6 Mar 2019 11:05:49 +0000 (12:05 +0100)]
vhost: silence an unused-variable warning
On some architectures, the MMU can be disabled, leading to access_ok()
becoming an empty macro that does not evaluate its size argument,
which in turn produces an unused-variable warning:
drivers/vhost/vhost.c:1191:9: error: unused variable 's' [-Werror,-Wunused-variable]
size_t s = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
Mark the variable as __maybe_unused to shut up that warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adalbert Lazăr [Wed, 6 Mar 2019 10:13:53 +0000 (12:13 +0200)]
vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock
Previous to commit
22b5c0b63f32 ("vsock/virtio: fix kernel panic
after device hot-unplug"), vsock_core_init() was called from
virtio_vsock_probe(). Now, virtio_transport_reset_no_sock() can be called
before vsock_core_init() has the chance to run.
[Wed Feb 27 14:17:09 2019] BUG: unable to handle kernel NULL pointer dereference at
0000000000000110
[Wed Feb 27 14:17:09 2019] #PF error: [normal kernel read fault]
[Wed Feb 27 14:17:09 2019] PGD 0 P4D 0
[Wed Feb 27 14:17:09 2019] Oops: 0000 [#1] SMP PTI
[Wed Feb 27 14:17:09 2019] CPU: 3 PID: 59 Comm: kworker/3:1 Not tainted 5.0.0-rc7-390-generic-hvi #390
[Wed Feb 27 14:17:09 2019] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[Wed Feb 27 14:17:09 2019] Workqueue: virtio_vsock virtio_transport_rx_work [vmw_vsock_virtio_transport]
[Wed Feb 27 14:17:09 2019] RIP: 0010:virtio_transport_reset_no_sock+0x8c/0xc0 [vmw_vsock_virtio_transport_common]
[Wed Feb 27 14:17:09 2019] Code: 35 8b 4f 14 48 8b 57 08 31 f6 44 8b 4f 10 44 8b 07 48 8d 7d c8 e8 84 f8 ff ff 48 85 c0 48 89 c3 74 2a e8 f7 31 03 00 48 89 df <48> 8b 80 10 01 00 00 e8 68 fb 69 ed 48 8b 75 f0 65 48 33 34 25 28
[Wed Feb 27 14:17:09 2019] RSP: 0018:
ffffb42701ab7d40 EFLAGS:
00010282
[Wed Feb 27 14:17:09 2019] RAX:
0000000000000000 RBX:
ffff9d79637ee080 RCX:
0000000000000003
[Wed Feb 27 14:17:09 2019] RDX:
0000000000000001 RSI:
0000000000000002 RDI:
ffff9d79637ee080
[Wed Feb 27 14:17:09 2019] RBP:
ffffb42701ab7d78 R08:
ffff9d796fae70e0 R09:
ffff9d796f403500
[Wed Feb 27 14:17:09 2019] R10:
ffffb42701ab7d90 R11:
0000000000000000 R12:
ffff9d7969d09240
[Wed Feb 27 14:17:09 2019] R13:
ffff9d79624e6840 R14:
ffff9d7969d09318 R15:
ffff9d796d48ff80
[Wed Feb 27 14:17:09 2019] FS:
0000000000000000(0000) GS:
ffff9d796fac0000(0000) knlGS:
0000000000000000
[Wed Feb 27 14:17:09 2019] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[Wed Feb 27 14:17:09 2019] CR2:
0000000000000110 CR3:
0000000427f22000 CR4:
00000000000006e0
[Wed Feb 27 14:17:09 2019] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[Wed Feb 27 14:17:09 2019] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[Wed Feb 27 14:17:09 2019] Call Trace:
[Wed Feb 27 14:17:09 2019] virtio_transport_recv_pkt+0x63/0x820 [vmw_vsock_virtio_transport_common]
[Wed Feb 27 14:17:09 2019] ? kfree+0x17e/0x190
[Wed Feb 27 14:17:09 2019] ? detach_buf_split+0x145/0x160
[Wed Feb 27 14:17:09 2019] ? __switch_to_asm+0x40/0x70
[Wed Feb 27 14:17:09 2019] virtio_transport_rx_work+0xa0/0x106 [vmw_vsock_virtio_transport]
[Wed Feb 27 14:17:09 2019] NET: Registered protocol family 40
[Wed Feb 27 14:17:09 2019] process_one_work+0x167/0x410
[Wed Feb 27 14:17:09 2019] worker_thread+0x4d/0x460
[Wed Feb 27 14:17:09 2019] kthread+0x105/0x140
[Wed Feb 27 14:17:09 2019] ? rescuer_thread+0x360/0x360
[Wed Feb 27 14:17:09 2019] ? kthread_destroy_worker+0x50/0x50
[Wed Feb 27 14:17:09 2019] ret_from_fork+0x35/0x40
[Wed Feb 27 14:17:09 2019] Modules linked in: vmw_vsock_virtio_transport vmw_vsock_virtio_transport_common input_leds vsock serio_raw i2c_piix4 mac_hid qemu_fw_cfg autofs4 cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops virtio_net psmouse drm net_failover pata_acpi virtio_blk failover floppy
Fixes:
22b5c0b63f32 ("vsock/virtio: fix kernel panic after device hot-unplug")
Reported-by: Alexandru Herghelegiu <aherghelegiu@bitdefender.com>
Signed-off-by: Adalbert Lazăr <alazar@bitdefender.com>
Co-developed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Li RongQing [Wed, 6 Mar 2019 06:46:27 +0000 (14:46 +0800)]
connector: fix unsafe usage of ->real_parent
proc_exit_connector() uses ->real_parent lockless. This is not
safe that its parent can go away at any moment, so use RCU to
protect it, and ensure that this task is not released.
[ 747.624551] ==================================================================
[ 747.632946] BUG: KASAN: use-after-free in proc_exit_connector+0x1f7/0x310
[ 747.640686] Read of size 4 at addr
ffff88a0276988e0 by task sshd/2882
[ 747.648032]
[ 747.649804] CPU: 11 PID: 2882 Comm: sshd Tainted: G E 4.19.26-rc2 #11
[ 747.658629] Hardware name: IBM x3550M4 -[7914OFV]-/00AM544, BIOS -[D7E142BUS-1.71]- 07/31/2014
[ 747.668419] Call Trace:
[ 747.671269] dump_stack+0xf0/0x19b
[ 747.675186] ? show_regs_print_info+0x5/0x5
[ 747.679988] ? kmsg_dump_rewind_nolock+0x59/0x59
[ 747.685302] print_address_description+0x6a/0x270
[ 747.691162] kasan_report+0x258/0x380
[ 747.695835] ? proc_exit_connector+0x1f7/0x310
[ 747.701402] proc_exit_connector+0x1f7/0x310
[ 747.706767] ? proc_coredump_connector+0x2d0/0x2d0
[ 747.712715] ? _raw_write_unlock_irq+0x29/0x50
[ 747.718270] ? _raw_write_unlock_irq+0x29/0x50
[ 747.723820] ? ___preempt_schedule+0x16/0x18
[ 747.729193] ? ___preempt_schedule+0x16/0x18
[ 747.734574] do_exit+0xa11/0x14f0
[ 747.738880] ? mm_update_next_owner+0x590/0x590
[ 747.744525] ? debug_show_all_locks+0x3c0/0x3c0
[ 747.761448] ? ktime_get_coarse_real_ts64+0xeb/0x1c0
[ 747.767589] ? lockdep_hardirqs_on+0x1a6/0x290
[ 747.773154] ? check_chain_key+0x139/0x1f0
[ 747.778345] ? check_flags.part.35+0x240/0x240
[ 747.783908] ? __lock_acquire+0x2300/0x2300
[ 747.789171] ? _raw_spin_unlock_irqrestore+0x59/0x70
[ 747.795316] ? _raw_spin_unlock_irqrestore+0x59/0x70
[ 747.801457] ? do_raw_spin_unlock+0x10f/0x1e0
[ 747.806914] ? do_raw_spin_trylock+0x120/0x120
[ 747.812481] ? preempt_count_sub+0x14/0xc0
[ 747.817645] ? _raw_spin_unlock+0x2e/0x50
[ 747.822708] ? __handle_mm_fault+0x12db/0x1fa0
[ 747.828367] ? __pmd_alloc+0x2d0/0x2d0
[ 747.833143] ? check_noncircular+0x50/0x50
[ 747.838309] ? match_held_lock+0x7f/0x340
[ 747.843380] ? check_noncircular+0x50/0x50
[ 747.848561] ? handle_mm_fault+0x21a/0x5f0
[ 747.853730] ? check_flags.part.35+0x240/0x240
[ 747.859290] ? check_chain_key+0x139/0x1f0
[ 747.864474] ? __do_page_fault+0x40f/0x760
[ 747.869655] ? __audit_syscall_entry+0x4b/0x1f0
[ 747.875319] ? syscall_trace_enter+0x1d5/0x7b0
[ 747.880877] ? trace_raw_output_preemptirq_template+0x90/0x90
[ 747.887895] ? trace_raw_output_sys_exit+0x80/0x80
[ 747.893860] ? up_read+0x3b/0x90
[ 747.898142] ? stop_critical_timings+0x260/0x260
[ 747.903909] do_group_exit+0xe0/0x1c0
[ 747.908591] ? __x64_sys_exit+0x30/0x30
[ 747.913460] ? trace_raw_output_preemptirq_template+0x90/0x90
[ 747.920485] ? tracer_hardirqs_on+0x270/0x270
[ 747.925956] __x64_sys_exit_group+0x28/0x30
[ 747.931214] do_syscall_64+0x117/0x400
[ 747.935988] ? syscall_return_slowpath+0x2f0/0x2f0
[ 747.941931] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 747.947788] ? trace_hardirqs_on_caller+0x1d0/0x1d0
[ 747.953838] ? lockdep_sys_exit+0x16/0x8e
[ 747.958915] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 747.964784] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 747.971021] RIP: 0033:0x7f572f154c68
[ 747.975606] Code: Bad RIP value.
[ 747.979791] RSP: 002b:
00007ffed2dfaa58 EFLAGS:
00000246 ORIG_RAX:
00000000000000e7
[ 747.989324] RAX:
ffffffffffffffda RBX:
00007f572f431840 RCX:
00007f572f154c68
[ 747.997910] RDX:
0000000000000001 RSI:
000000000000003c RDI:
0000000000000001
[ 748.006495] RBP:
0000000000000001 R08:
00000000000000e7 R09:
fffffffffffffee0
[ 748.015079] R10:
00007f572f4387e8 R11:
0000000000000246 R12:
00007f572f431840
[ 748.023664] R13:
000055a7f90f2c50 R14:
000055a7f96e2310 R15:
000055a7f96e2310
[ 748.032287]
[ 748.034509] Allocated by task 2300:
[ 748.038982] kasan_kmalloc+0xa0/0xd0
[ 748.043562] kmem_cache_alloc_node+0xf5/0x2e0
[ 748.049018] copy_process+0x1781/0x4790
[ 748.053884] _do_fork+0x166/0x9a0
[ 748.058163] do_syscall_64+0x117/0x400
[ 748.062943] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 748.069180]
[ 748.071405] Freed by task 15395:
[ 748.075591] __kasan_slab_free+0x130/0x180
[ 748.080752] kmem_cache_free+0xc2/0x310
[ 748.085619] free_task+0xea/0x130
[ 748.089901] __put_task_struct+0x177/0x230
[ 748.095063] finish_task_switch+0x51b/0x5d0
[ 748.100315] __schedule+0x506/0xfa0
[ 748.104791] schedule+0xca/0x260
[ 748.108978] futex_wait_queue_me+0x27e/0x420
[ 748.114333] futex_wait+0x251/0x550
[ 748.118814] do_futex+0x75b/0xf80
[ 748.123097] __x64_sys_futex+0x231/0x2a0
[ 748.128065] do_syscall_64+0x117/0x400
[ 748.132835] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 748.139066]
[ 748.141289] The buggy address belongs to the object at
ffff88a027698000
[ 748.141289] which belongs to the cache task_struct of size 12160
[ 748.156589] The buggy address is located 2272 bytes inside of
[ 748.156589] 12160-byte region [
ffff88a027698000,
ffff88a02769af80)
[ 748.171114] The buggy address belongs to the page:
[ 748.177055] page:
ffffea00809da600 count:1 mapcount:0 mapping:
ffff888107d01e00 index:0x0 compound_mapcount: 0
[ 748.189136] flags: 0x57ffffc0008100(slab|head)
[ 748.194688] raw:
0057ffffc0008100 ffffea00809a3200 0000000300000003 ffff888107d01e00
[ 748.204424] raw:
0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
[ 748.214146] page dumped because: kasan: bad access detected
[ 748.220976]
[ 748.223197] Memory state around the buggy address:
[ 748.229128]
ffff88a027698780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 748.238271]
ffff88a027698800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 748.247414] >
ffff88a027698880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 748.256564] ^
[ 748.264267]
ffff88a027698900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 748.273493]
ffff88a027698980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 748.282630] ==================================================================
Fixes:
b086ff87251b4a4 ("connector: add parent pid and tgid to coredump and exit events")
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Litao Jiao [Wed, 6 Mar 2019 04:01:48 +0000 (12:01 +0800)]
vxlan: do not need BH again in vxlan_cleanup()
vxlan_cleanup() is a timer callback, it is already
and only running in BH context.
Signed-off-by: Litao Jiao <jiaolitao@raisecom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jian Shen [Wed, 6 Mar 2019 03:26:37 +0000 (11:26 +0800)]
net: hns3: add dma_rmb() for rx description
HW can not guarantee complete write desc->rx.size, even though
HNS3_RXD_VLD_B has been set. Driver needs to add dma_rmb()
instruction to make sure desc->rx.size is always valid.
Fixes:
e55970950556 ("net: hns3: Add handling of GRO Pkts not fully RX'ed in NAPI poll")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pedro Tammela [Tue, 5 Mar 2019 14:35:54 +0000 (11:35 -0300)]
net: add missing documentation in linux/skbuff.h
This patch adds missing documentation for some inline functions on
linux/skbuff.h. The patch is incomplete and a lot more can be added,
just wondering if it's of interest of the netdev developers.
Also fixed some whitespaces.
Signed-off-by: Pedro Tammela <pctammela@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Mar 2019 19:48:20 +0000 (11:48 -0800)]
Merge branch 'stmmac-add-some-fixes-for-stm32'
Christophe Roullier says:
====================
stmmac: add some fixes for stm32
For common stmmac:
- Add support to set CSR Clock range selection in DT
For stm32mpu:
- Glue codes to support magic packet
- Glue codes to support all PHY config :
PHY_MODE (MII,GMII, RMII, RGMII) and in normal,
PHY wo crystal (25Mhz),
PHY wo crystal (50Mhz), No 125Mhz from PHY config
For stm32mcu:
- Add Ethernet support for stm32h7
Changes in V3:
- Reverse for syscfg management because it is manage by these patches
https://lkml.org/lkml/2018/12/12/133
https://lkml.org/lkml/2018/12/12/134
https://lkml.org/lkml/2018/12/12/131
https://lkml.org/lkml/2018/12/12/132
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe Roullier [Tue, 5 Mar 2019 08:29:28 +0000 (09:29 +0100)]
ARM: dts: stm32: Add Ethernet support on stm32h7 SOC and activate it for eval and disco boards
Synopsys GMAC 4.10 is used. And Phy mode for eval and disco is RMII
with PHY SMSC LAN8742
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe Roullier [Tue, 5 Mar 2019 08:29:27 +0000 (09:29 +0100)]
dt-bindings: net: stmmac: remove syscfg clock property
Syscfg clock is no more needed.
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe Roullier [Tue, 5 Mar 2019 08:29:26 +0000 (09:29 +0100)]
net: ethernet: stmmac: add management of clk_csr property
In Documentation stmmac.txt there is possibility to
fixed CSR Clock range selection with property clk_csr.
This patch add the management of this property
For example to use it, add in your ethernet node DT:
clk_csr = <3>;
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe Roullier [Tue, 5 Mar 2019 08:29:25 +0000 (09:29 +0100)]
dt-bindings: net: stmmac: add phys config properties
Add properties to support all Phy config
PHY_MODE (MII,GMII, RMII, RGMII) and in normal, PHY wo crystal (25Mhz),
PHY wo crystal (50Mhz), No 125Mhz from PHY config.
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe Roullier [Tue, 5 Mar 2019 08:29:24 +0000 (09:29 +0100)]
net: ethernet: stmmac: update to support all PHY config for stm32mp157c.
Update glue codes to support all PHY config on stm32mp157c
PHY_MODE (MII,GMII, RMII, RGMII) and in normal, PHY wo crystal (25Mhz),
PHY wo crystal (50Mhz), No 125Mhz from PHY config.
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe Roullier [Tue, 5 Mar 2019 08:29:23 +0000 (09:29 +0100)]
net: ethernet: stmmac: manage Ethernet WoL for stm32mp157c.
Add glue codes to support magic packet on stm32mp157c
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Mar 2019 19:42:50 +0000 (11:42 -0800)]
Merge branch 'sctp-process-the-error-returned-from-sctp_sock_migrate'
Xin Long says:
====================
sctp: process the error returned from sctp_sock_migrate()
This patchset is to process the errs returned by sctp_auth_init_hmacs()
and sctp_bind_addr_dup() from sctp_sock_migrate(). And also fix a panic
caused by new ep->auth_hmacs was not set due to net->sctp.auth_enable
changed by sysctl before accepting an assoc.
====================
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sun, 3 Mar 2019 09:54:55 +0000 (17:54 +0800)]
sctp: call sctp_auth_init_hmacs() in sctp_sock_migrate()
New ep's auth_hmacs should be set if old ep's is set, in case that
net->sctp.auth_enable has been changed to 0 by users and new ep's
auth_hmacs couldn't be set in sctp_endpoint_init().
It can even crash kernel by doing:
1. on server: sysctl -w net.sctp.auth_enable=1,
sysctl -w net.sctp.addip_enable=1,
sysctl -w net.sctp.addip_noauth_enable=0,
listen() on server,
sysctl -w net.sctp.auth_enable=0.
2. on client: connect() to server.
3. on server: accept() the asoc,
sysctl -w net.sctp.auth_enable=1.
4. on client: send() asconf packet to server.
The call trace:
[ 245.280251] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[ 245.286872] RIP: 0010:sctp_auth_calculate_hmac+0xa3/0x140 [sctp]
[ 245.304572] Call Trace:
[ 245.305091] <IRQ>
[ 245.311287] sctp_sf_authenticate+0x110/0x160 [sctp]
[ 245.312311] sctp_sf_eat_auth+0xf2/0x230 [sctp]
[ 245.313249] sctp_do_sm+0x9a/0x2d0 [sctp]
[ 245.321483] sctp_assoc_bh_rcv+0xed/0x1a0 [sctp]
[ 245.322495] sctp_rcv+0xa66/0xc70 [sctp]
It's because the old ep->auth_hmacs wasn't copied to the new ep while
ep->auth_hmacs is used in sctp_auth_calculate_hmac() when processing
the incoming auth chunks, and it should have been done when migrating
sock.
Reported-by: Ying Xu <yinxu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sun, 3 Mar 2019 09:54:54 +0000 (17:54 +0800)]
sctp: move up sctp_auth_init_hmacs() in sctp_endpoint_init()
sctp_auth_init_hmacs() is called only when ep->auth_enable is set.
It better to move up sctp_auth_init_hmacs() and remove auth_enable
check in it and check auth_enable only once in sctp_endpoint_init().
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sun, 3 Mar 2019 09:54:53 +0000 (17:54 +0800)]
sctp: sctp_sock_migrate() returns error if sctp_bind_addr_dup() fails
It should fail to create the new sk if sctp_bind_addr_dup() fails
when accepting or peeloff an association.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Fri, 8 Mar 2019 15:40:57 +0000 (16:40 +0100)]
vxlan: Fix GRO cells race condition between receive and link delete
If we receive a packet while deleting a VXLAN device, there's a chance
vxlan_rcv() is called at the same time as vxlan_dellink(). This is fine,
except that vxlan_dellink() should never ever touch stuff that's still in
use, such as the GRO cells list.
Otherwise, vxlan_rcv() crashes while queueing packets via
gro_cells_receive().
Move the gro_cells_destroy() to vxlan_uninit(), which runs after the RCU
grace period is elapsed and nothing needs the gro_cells anymore.
This is now done in the same way as commit
8e816df87997 ("geneve: Use GRO
cells infrastructure.") originally implemented for GENEVE.
Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes:
58ce31cca1ff ("vxlan: GRO support at tunnel layer")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Howells [Fri, 8 Mar 2019 12:48:39 +0000 (12:48 +0000)]
rxrpc: Fix client call connect/disconnect race
rxrpc_disconnect_client_call() reads the call's connection ID protocol
value (call->cid) as part of that function's variable declarations. This
is bad because it's not inside the locked section and so may race with
someone granting use of the channel to the call.
This manifests as an assertion failure (see below) where the call in the
presumed channel (0 because call->cid wasn't set when we read it) doesn't
match the call attached to the channel we were actually granted (if 1, 2 or
3).
Fix this by moving the read and dependent calculations inside of the
channel_lock section. Also, only set the channel number and pointer
variables if cid is not zero (ie. unset).
This problem can be induced by injecting an occasional error in
rxrpc_wait_for_channel() before the call to schedule().
Make two further changes also:
(1) Add a trace for wait failure in rxrpc_connect_call().
(2) Drop channel_lock before BUG'ing in the case of the assertion failure.
The failure causes a trace akin to the following:
rxrpc: Assertion failed -
18446612685268945920(0xffff8880beab8c00) ==
18446612685268621312(0xffff8880bea69800) is false
------------[ cut here ]------------
kernel BUG at net/rxrpc/conn_client.c:824!
...
RIP: 0010:rxrpc_disconnect_client_call+0x2bf/0x99d
...
Call Trace:
rxrpc_connect_call+0x902/0x9b3
? wake_up_q+0x54/0x54
rxrpc_new_client_call+0x3a0/0x751
? rxrpc_kernel_begin_call+0x141/0x1bc
? afs_alloc_call+0x1b5/0x1b5
rxrpc_kernel_begin_call+0x141/0x1bc
afs_make_call+0x20c/0x525
? afs_alloc_call+0x1b5/0x1b5
? __lock_is_held+0x40/0x71
? lockdep_init_map+0xaf/0x193
? lockdep_init_map+0xaf/0x193
? __lock_is_held+0x40/0x71
? yfs_fs_fetch_data+0x33b/0x34a
yfs_fs_fetch_data+0x33b/0x34a
afs_fetch_data+0xdc/0x3b7
afs_read_dir+0x52d/0x97f
afs_dir_iterate+0xa0/0x661
? iterate_dir+0x63/0x141
iterate_dir+0xa2/0x141
ksys_getdents64+0x9f/0x11b
? filldir+0x111/0x111
? do_syscall_64+0x3e/0x1a0
__x64_sys_getdents64+0x16/0x19
do_syscall_64+0x7d/0x1a0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes:
45025bceef17 ("rxrpc: Improve management and caching of client connection objects")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Fri, 8 Mar 2019 07:49:16 +0000 (15:49 +0800)]
sctp: remove sched init from sctp_stream_init
syzbot reported a NULL-ptr deref caused by that sched->init() in
sctp_stream_init() set stream->rr_next = NULL.
kasan: GPF could be caused by NULL-ptr deref or user memory access
RIP: 0010:sctp_sched_rr_dequeue+0xd3/0x170 net/sctp/stream_sched_rr.c:141
Call Trace:
sctp_outq_dequeue_data net/sctp/outqueue.c:90 [inline]
sctp_outq_flush_data net/sctp/outqueue.c:1079 [inline]
sctp_outq_flush+0xba2/0x2790 net/sctp/outqueue.c:1205
All sched info is saved in sout->ext now, in sctp_stream_init()
sctp_stream_alloc_out() will not change it, there's no need to
call sched->init() again, since sctp_outq_init() has already
done it.
Fixes:
5bbbbe32a431 ("sctp: introduce stream scheduler foundations")
Reported-by: syzbot+4c9934f20522c0efd657@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Fri, 8 Mar 2019 06:50:54 +0000 (14:50 +0800)]
route: set the deleted fnhe fnhe_daddr to 0 in ip_del_fnhe to fix a race
The race occurs in __mkroute_output() when 2 threads lookup a dst:
CPU A CPU B
find_exception()
find_exception() [fnhe expires]
ip_del_fnhe() [fnhe is deleted]
rt_bind_exception()
In rt_bind_exception() it will bind a deleted fnhe with the new dst, and
this dst will get no chance to be freed. It causes a dev defcnt leak and
consecutive dmesg warnings:
unregister_netdevice: waiting for ethX to become free. Usage count = 1
Especially thanks Jon to identify the issue.
This patch fixes it by setting fnhe_daddr to 0 in ip_del_fnhe() to stop
binding the deleted fnhe with a new dst when checking fnhe's fnhe_daddr
and daddr in rt_bind_exception().
It works as both ip_del_fnhe() and rt_bind_exception() are protected by
fnhe_lock and the fhne is freed by kfree_rcu().
Fixes:
deed49df7390 ("route: check and remove route cache when we get route")
Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 7 Mar 2019 17:36:33 +0000 (09:36 -0800)]
net/hsr: fix possible crash in add_timer()
syzbot found another add_timer() issue, this time in net/hsr [1]
Let's use mod_timer() which is safe.
[1]
kernel BUG at kernel/time/timer.c:1136!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 15909 Comm: syz-executor.3 Not tainted 5.0.0+ #97
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
kobject: 'loop2' (
00000000f5629718): kobject_uevent_env
RIP: 0010:add_timer kernel/time/timer.c:1136 [inline]
RIP: 0010:add_timer+0x654/0xbe0 kernel/time/timer.c:1134
Code: 0f 94 c5 31 ff 44 89 ee e8 09 61 0f 00 45 84 ed 0f 84 77 fd ff ff e8 bb 5f 0f 00 e8 07 10 a0 ff e9 68 fd ff ff e8 ac 5f 0f 00 <0f> 0b e8 a5 5f 0f 00 0f 0b e8 9e 5f 0f 00 4c 89 b5 58 ff ff ff e9
RSP: 0018:
ffff8880656eeca0 EFLAGS:
00010246
kobject: 'loop2' (
00000000f5629718): fill_kobj_path: path = '/devices/virtual/block/loop2'
RAX:
0000000000040000 RBX:
1ffff1100caddd9a RCX:
ffffc9000c436000
RDX:
0000000000040000 RSI:
ffffffff816056c4 RDI:
ffff88806a2f6cc8
RBP:
ffff8880656eed58 R08:
ffff888067f4a300 R09:
ffff888067f4abc8
R10:
0000000000000000 R11:
0000000000000000 R12:
ffff88806a2f6cc0
R13:
dffffc0000000000 R14:
0000000000000001 R15:
ffff8880656eed30
FS:
00007fc2019bf700(0000) GS:
ffff8880ae800000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
0000000000738000 CR3:
0000000067e8e000 CR4:
00000000001406f0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
Call Trace:
hsr_check_announce net/hsr/hsr_device.c:99 [inline]
hsr_check_carrier_and_operstate+0x567/0x6f0 net/hsr/hsr_device.c:120
hsr_netdev_notify+0x297/0xa00 net/hsr/hsr_main.c:51
notifier_call_chain+0xc7/0x240 kernel/notifier.c:93
__raw_notifier_call_chain kernel/notifier.c:394 [inline]
raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
call_netdevice_notifiers net/core/dev.c:1765 [inline]
dev_open net/core/dev.c:1436 [inline]
dev_open+0x143/0x160 net/core/dev.c:1424
team_port_add drivers/net/team/team.c:1203 [inline]
team_add_slave+0xa07/0x15d0 drivers/net/team/team.c:1933
do_set_master net/core/rtnetlink.c:2358 [inline]
do_set_master+0x1d4/0x230 net/core/rtnetlink.c:2332
do_setlink+0x966/0x3510 net/core/rtnetlink.c:2493
rtnl_setlink+0x271/0x3b0 net/core/rtnetlink.c:2747
rtnetlink_rcv_msg+0x465/0xb00 net/core/rtnetlink.c:5192
netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485
rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5210
netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336
netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925
sock_sendmsg_nosec net/socket.c:622 [inline]
sock_sendmsg+0xdd/0x130 net/socket.c:632
sock_write_iter+0x27c/0x3e0 net/socket.c:923
call_write_iter include/linux/fs.h:1869 [inline]
do_iter_readv_writev+0x5e0/0x8e0 fs/read_write.c:680
do_iter_write fs/read_write.c:956 [inline]
do_iter_write+0x184/0x610 fs/read_write.c:937
vfs_writev+0x1b3/0x2f0 fs/read_write.c:1001
do_writev+0xf6/0x290 fs/read_write.c:1036
__do_sys_writev fs/read_write.c:1109 [inline]
__se_sys_writev fs/read_write.c:1106 [inline]
__x64_sys_writev+0x75/0xb0 fs/read_write.c:1106
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457f29
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:
00007fc2019bec78 EFLAGS:
00000246 ORIG_RAX:
0000000000000014
RAX:
ffffffffffffffda RBX:
0000000000000003 RCX:
0000000000457f29
RDX:
0000000000000001 RSI:
00000000200000c0 RDI:
0000000000000003
RBP:
000000000073bf00 R08:
0000000000000000 R09:
0000000000000000
R10:
0000000000000000 R11:
0000000000000246 R12:
00007fc2019bf6d4
R13:
00000000004c4a60 R14:
00000000004dd218 R15:
00000000ffffffff
Fixes:
f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dirk van der Merwe [Thu, 7 Mar 2019 18:52:13 +0000 (10:52 -0800)]
nfp: fix simple vNIC mailbox length
The simple vNIC mailbox length should be 12 decimal and not 0x12.
Using a decimal also makes it clear this is a length value and not
another field within the simple mailbox defines.
Found by code inspection, there are no known firmware configurations
where this would cause issues.
Fixes:
527d7d1b9949 ("nfp: read mailbox address from TLV caps")
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nathan Chancellor [Thu, 7 Mar 2019 18:11:26 +0000 (11:11 -0700)]
net: atm: Add another IS_ENABLED(CONFIG_COMPAT) in atm_dev_ioctl
I removed compat's universal assignment to 0, which allows this if
statement to fall through when compat is passed with a value other
than 0.
Fixes:
f9d19a7494e5 ("net: atm: Use IS_ENABLED in atm_dev_ioctl")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nathan Chancellor [Thu, 7 Mar 2019 18:00:28 +0000 (11:00 -0700)]
net: stmmac: Avoid sometimes uninitialized Clang warnings
When building with -Wsometimes-uninitialized, Clang warns:
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:495:3: warning: variable 'ns' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:495:3: warning: variable 'ns' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:532:3: warning: variable 'ns' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:532:3: warning: variable 'ns' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:741:3: warning: variable 'sec_inc' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:741:3: warning: variable 'sec_inc' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
Clang is concerned with the use of stmmac_do_void_callback (which
stmmac_get_timestamp and stmmac_config_sub_second_increment wrap),
as it may fail to initialize these values if the if condition was ever
false (meaning the callbacks don't exist). It's not wrong because the
callbacks (get_timestamp and config_sub_second_increment respectively)
are the ones that initialize the variables. While it's unlikely that the
callbacks are ever going to disappear and make that condition false, we
can easily avoid this warning by zero initialize the variables.
Link: https://github.com/ClangBuiltLinux/linux/issues/384
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nathan Chancellor [Thu, 7 Mar 2019 16:57:42 +0000 (09:57 -0700)]
net: atm: Use IS_ENABLED in atm_dev_ioctl
When building with -Wsometimes-uninitialized, Clang warns:
net/atm/resources.c:256:6: warning: variable 'number' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
net/atm/resources.c:212:7: warning: variable 'iobuf_len' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
Clang won't realize that compat is 0 when CONFIG_COMPAT is not set until
the constant folding stage, which happens after this semantic analysis.
Use IS_ENABLED instead so that the zero is present at the semantic
analysis stage, which eliminates this warning.
Link: https://github.com/ClangBuiltLinux/linux/issues/386
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Thu, 7 Mar 2019 15:58:35 +0000 (16:58 +0100)]
ethtool: reduce stack usage with clang
clang inlines the dev_ethtool() more aggressively than gcc does, leading
to a larger amount of used stack space:
net/core/ethtool.c:2536:24: error: stack frame size of 1216 bytes in function 'dev_ethtool' [-Werror,-Wframe-larger-than=]
Marking the sub-functions that require the most stack space as
noinline_for_stack gives us reasonable behavior on all compilers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sudarsana Reddy Kalluru [Thu, 7 Mar 2019 15:56:35 +0000 (07:56 -0800)]
qede: Fix internal loopback failure with jumbo mtu configuration
Driver uses port-mtu as packet-size for the loopback traffic. This patch
limits the max packet size to 1.5K to avoid data being split over multiple
buffer descriptors (BDs) in cases where MTU > PAGE_SIZE.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Thu, 7 Mar 2019 15:52:24 +0000 (16:52 +0100)]
enic: fix build warning without CONFIG_CPUMASK_OFFSTACK
The enic driver relies on the CONFIG_CPUMASK_OFFSTACK feature to
dynamically allocate a struct member, but this is normally intended for
local variables.
Building with clang, I get a warning for a few locations that check the
address of the cpumask_var_t:
drivers/net/ethernet/cisco/enic/enic_main.c:122:22: error: address of array 'enic->msix[i].affinity_mask' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
As far as I can tell, the code is still correct, as the truth value of
the pointer is what we need in this configuration. To get rid of
the warning, use cpumask_available() instead of checking the
pointer directly.
Fixes:
322cf7e3a4e8 ("enic: assign affinity hint to interrupts")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Thu, 7 Mar 2019 10:31:55 +0000 (11:31 +0100)]
peak_usb: fix clang build warning
Clang points out undefined behavior when building the pcan_usb_pro driver:
drivers/net/can/usb/peak_usb/pcan_usb_pro.c:136:15: error: passing an object that undergoes default argument promotion to 'va_start' has undefined behavior [-Werror,-Wvarargs]
Changing the function prototype to avoid argument promotion in the
varargs call avoids the warning, and should make this well-defined.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Masaru Nagai [Thu, 7 Mar 2019 10:24:47 +0000 (11:24 +0100)]
ravb: Decrease TxFIFO depth of Q3 and Q2 to one
Hardware has the CBS (Credit Based Shaper) which affects only Q3
and Q2. When updating the CBS settings, even if the driver does so
after waiting for Tx DMA finished, there is a possibility that frame
data still remains in TxFIFO.
To avoid this, decrease TxFIFO depth of Q3 and Q2 to one.
This patch has been exercised this using netperf TCP_MAERTS, TCP_STREAM
and UDP_STREAM tests run on an Ebisu board. No performance change was
detected, outside of noise in the tests, both in terms of throughput and
CPU utilisation.
Fixes:
c156633f1353 ("Renesas Ethernet AVB driver proper")
Signed-off-by: Masaru Nagai <masaru.nagai.vx@renesas.com>
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
[simon: updated changelog]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Thu, 7 Mar 2019 09:32:07 +0000 (10:32 +0100)]
isdn: isdnloop: fix pointer dereference bug
clang has spotted an ancient code bug and warns about it with:
drivers/isdn/isdnloop/isdnloop.c:573:12: error: address of array 'card->rcard' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
This is an array of pointers, so we should check if a specific
pointer exists in the array before using it, not whether the
array itself exists.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Thu, 7 Mar 2019 09:31:20 +0000 (10:31 +0100)]
davinci_emac: always build in CONFIG_OF code
clang warns about what seems to be an unintended use of an obscure C
language feature where a forward declaration of an array remains usable
when the final definition is never seen:
drivers/net/ethernet/ti/davinci_emac.c:1694:34: error: tentative array definition assumed to have one element [-Werror]
static const struct of_device_id davinci_emac_of_match[];
There is no harm in always enabling the device tree matching code here,
and it makes the code behave in a more conventional way aside from
avoiding the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Soheil Hassas Yeganeh [Wed, 6 Mar 2019 18:01:36 +0000 (13:01 -0500)]
tcp: do not report TCP_CM_INQ of 0 for closed connections
Returning 0 as inq to userspace indicates there is no more data to
read, and the application needs to wait for EPOLLIN. For a connection
that has received FIN from the remote peer, however, the application
must continue reading until getting EOF (return value of 0
from tcp_recvmsg) or an error, if edge-triggered epoll (EPOLLET) is
being used. Otherwise, the application will never receive a new
EPOLLIN, since there is no epoll edge after the FIN.
Return 1 when there is no data left on the queue but the
connection has received FIN, so that the applications continue
reading.
Fixes:
b75eba76d3d72 (tcp: send in-queue bytes in cmsg upon read)
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mao Wenan [Wed, 6 Mar 2019 14:45:01 +0000 (22:45 +0800)]
net: hsr: fix memory leak in hsr_dev_finalize()
If hsr_add_port(hsr, hsr_dev, HSR_PT_MASTER) failed to
add port, it directly returns res and forgets to free the node
that allocated in hsr_create_self_node(), and forgets to delete
the node->mac_list linked in hsr->self_node_db.
BUG: memory leak
unreferenced object 0xffff8881cfa0c780 (size 64):
comm "syz-executor.0", pid 2077, jiffies
4294717969 (age 2415.377s)
hex dump (first 32 bytes):
e0 c7 a0 cf 81 88 ff ff 00 02 00 00 00 00 ad de ................
00 e6 49 cd 81 88 ff ff c0 9b 87 d0 81 88 ff ff ..I.............
backtrace:
[<
00000000e2ff5070>] hsr_dev_finalize+0x736/0x960 [hsr]
[<
000000003ed2e597>] hsr_newlink+0x2b2/0x3e0 [hsr]
[<
000000003fa8c6b6>] __rtnl_newlink+0xf1f/0x1600 net/core/rtnetlink.c:3182
[<
000000001247a7ad>] rtnl_newlink+0x66/0x90 net/core/rtnetlink.c:3240
[<
00000000e7d1b61d>] rtnetlink_rcv_msg+0x54e/0xb90 net/core/rtnetlink.c:5130
[<
000000005556bd3a>] netlink_rcv_skb+0x129/0x340 net/netlink/af_netlink.c:2477
[<
00000000741d5ee6>] netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
[<
00000000741d5ee6>] netlink_unicast+0x49a/0x650 net/netlink/af_netlink.c:1336
[<
000000009d56f9b7>] netlink_sendmsg+0x88b/0xdf0 net/netlink/af_netlink.c:1917
[<
0000000046b35c59>] sock_sendmsg_nosec net/socket.c:621 [inline]
[<
0000000046b35c59>] sock_sendmsg+0xc3/0x100 net/socket.c:631
[<
00000000d208adc9>] __sys_sendto+0x33e/0x560 net/socket.c:1786
[<
00000000b582837a>] __do_sys_sendto net/socket.c:1798 [inline]
[<
00000000b582837a>] __se_sys_sendto net/socket.c:1794 [inline]
[<
00000000b582837a>] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1794
[<
00000000c866801d>] do_syscall_64+0x147/0x600 arch/x86/entry/common.c:290
[<
00000000fea382d9>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
00000000e01dacb3>] 0xffffffffffffffff
Fixes:
c5a759117210 ("net/hsr: Use list_head (and rcu) instead of array for slave devices.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Buslov [Wed, 6 Mar 2019 14:22:12 +0000 (16:22 +0200)]
net: sched: flower: insert new filter to idr after setting its mask
When adding new filter to flower classifier, fl_change() inserts it to
handle_idr before initializing filter extensions and assigning it a mask.
Normally this ordering doesn't matter because all flower classifier ops
callbacks assume rtnl lock protection. However, when filter has an action
that doesn't have its kernel module loaded, rtnl lock is released before
call to request_module(). During this time the filter can be accessed bu
concurrent task before its initialization is completed, which can lead to a
crash.
Example case of NULL pointer dereference in concurrent dump:
Task 1 Task 2
tc_new_tfilter()
fl_change()
idr_alloc_u32(fnew)
fl_set_parms()
tcf_exts_validate()
tcf_action_init()
tcf_action_init_1()
rtnl_unlock()
request_module()
... rtnl_lock()
tc_dump_tfilter()
tcf_chain_dump()
fl_walk()
idr_get_next_ul()
tcf_node_dump()
tcf_fill_node()
fl_dump()
mask = &f->mask->key; <- NULL ptr
rtnl_lock()
Extension initialization and mask assignment don't depend on fnew->handle
that is allocated by idr_alloc_u32(). Move idr allocation code after action
creation and mask assignment in fl_change() to prevent concurrent access
to not fully initialized filter when rtnl lock is released to load action
module.
Fixes:
01683a146999 ("net: sched: refactor flower walk to iterate over idr")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vasily Averin [Wed, 6 Mar 2019 11:10:22 +0000 (14:10 +0300)]
tcp: detecting the misuse of .sendpage for Slab objects
sendpage was not designed for processing of the Slab pages,
in some situations it can trigger BUG_ON on receiving side.
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Wed, 6 Mar 2019 10:52:37 +0000 (11:52 +0100)]
appletalk: Add atalk.h header files to MAINTAINERS file
Add the path names here so that git-send-email can pick up the
netdev@vger.kernel.org Cc line automatically for a patch that
only touches the headers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Wed, 6 Mar 2019 10:52:36 +0000 (11:52 +0100)]
appletalk: Fix compile regression
A bugfix just broke compilation of appletalk when CONFIG_SYSCTL
is disabled:
In file included from net/appletalk/ddp.c:65:
net/appletalk/ddp.c: In function 'atalk_init':
include/linux/atalk.h:164:34: error: expected expression before 'do'
#define atalk_register_sysctl() do { } while(0)
^~
net/appletalk/ddp.c:1934:7: note: in expansion of macro 'atalk_register_sysctl'
rc = atalk_register_sysctl();
This is easier to avoid by using conventional inline functions
as stubs rather than macros. The header already has inline
functions for other purposes, so I'm changing over all the
macros for consistency.
Fixes:
6377f787aeb9 ("appletalk: Fix use-after-free in atalk_proc_exit")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alan Maguire [Wed, 6 Mar 2019 10:25:42 +0000 (10:25 +0000)]
iptunnel: NULL pointer deref for ip_md_tunnel_xmit
Naresh Kamboju noted the following oops during execution of selftest
tools/testing/selftests/bpf/test_tunnel.sh on x86_64:
[ 274.120445] BUG: unable to handle kernel NULL pointer dereference
at
0000000000000000
[ 274.128285] #PF error: [INSTR]
[ 274.131351] PGD
8000000414a0e067 P4D
8000000414a0e067 PUD
3b6334067 PMD 0
[ 274.138241] Oops: 0010 [#1] SMP PTI
[ 274.141734] CPU: 1 PID: 11464 Comm: ping Not tainted
5.0.0-rc4-next-
20190129 #1
[ 274.149046] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 274.156526] RIP: 0010: (null)
[ 274.160280] Code: Bad RIP value.
[ 274.163509] RSP: 0018:
ffffbc9681f83540 EFLAGS:
00010286
[ 274.168726] RAX:
0000000000000000 RBX:
ffffdc967fa80a18 RCX:
0000000000000000
[ 274.175851] RDX:
ffff9db2ee08b540 RSI:
000000000000000e RDI:
ffffdc967fa809a0
[ 274.182974] RBP:
ffffbc9681f83580 R08:
ffff9db2c4d62690 R09:
000000000000000c
[ 274.190098] R10:
0000000000000000 R11:
ffff9db2ee08b540 R12:
ffff9db31ce7c000
[ 274.197222] R13:
0000000000000001 R14:
000000000000000c R15:
ffff9db3179cf400
[ 274.204346] FS:
00007ff4ae7c5740(0000) GS:
ffff9db31fa80000(0000)
knlGS:
0000000000000000
[ 274.212424] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 274.218162] CR2:
ffffffffffffffd6 CR3:
00000004574da004 CR4:
00000000003606e0
[ 274.225292] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 274.232416] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 274.239541] Call Trace:
[ 274.241988] ? tnl_update_pmtu+0x296/0x3b0
[ 274.246085] ip_md_tunnel_xmit+0x1bc/0x520
[ 274.250176] gre_fb_xmit+0x330/0x390
[ 274.253754] gre_tap_xmit+0x128/0x180
[ 274.257414] dev_hard_start_xmit+0xb7/0x300
[ 274.261598] sch_direct_xmit+0xf6/0x290
[ 274.265430] __qdisc_run+0x15d/0x5e0
[ 274.269007] __dev_queue_xmit+0x2c5/0xc00
[ 274.273011] ? dev_queue_xmit+0x10/0x20
[ 274.276842] ? eth_header+0x2b/0xc0
[ 274.280326] dev_queue_xmit+0x10/0x20
[ 274.283984] ? dev_queue_xmit+0x10/0x20
[ 274.287813] arp_xmit+0x1a/0xf0
[ 274.290952] arp_send_dst.part.19+0x46/0x60
[ 274.295138] arp_solicit+0x177/0x6b0
[ 274.298708] ? mod_timer+0x18e/0x440
[ 274.302281] neigh_probe+0x57/0x70
[ 274.305684] __neigh_event_send+0x197/0x2d0
[ 274.309862] neigh_resolve_output+0x18c/0x210
[ 274.314212] ip_finish_output2+0x257/0x690
[ 274.318304] ip_finish_output+0x219/0x340
[ 274.322314] ? ip_finish_output+0x219/0x340
[ 274.326493] ip_output+0x76/0x240
[ 274.329805] ? ip_fragment.constprop.53+0x80/0x80
[ 274.334510] ip_local_out+0x3f/0x70
[ 274.337992] ip_send_skb+0x19/0x40
[ 274.341391] ip_push_pending_frames+0x33/0x40
[ 274.345740] raw_sendmsg+0xc15/0x11d0
[ 274.349403] ? __might_fault+0x85/0x90
[ 274.353151] ? _copy_from_user+0x6b/0xa0
[ 274.357070] ? rw_copy_check_uvector+0x54/0x130
[ 274.361604] inet_sendmsg+0x42/0x1c0
[ 274.365179] ? inet_sendmsg+0x42/0x1c0
[ 274.368937] sock_sendmsg+0x3e/0x50
[ 274.372460] ___sys_sendmsg+0x26f/0x2d0
[ 274.376293] ? lock_acquire+0x95/0x190
[ 274.380043] ? __handle_mm_fault+0x7ce/0xb70
[ 274.384307] ? lock_acquire+0x95/0x190
[ 274.388053] ? __audit_syscall_entry+0xdd/0x130
[ 274.392586] ? ktime_get_coarse_real_ts64+0x64/0xc0
[ 274.397461] ? __audit_syscall_entry+0xdd/0x130
[ 274.401989] ? trace_hardirqs_on+0x4c/0x100
[ 274.406173] __sys_sendmsg+0x63/0xa0
[ 274.409744] ? __sys_sendmsg+0x63/0xa0
[ 274.413488] __x64_sys_sendmsg+0x1f/0x30
[ 274.417405] do_syscall_64+0x55/0x190
[ 274.421064] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 274.426113] RIP: 0033:0x7ff4ae0e6e87
[ 274.429686] Code: 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 80 00
00 00 00 8b 05 ca d9 2b 00 48 63 d2 48 63 ff 85 c0 75 10 b8 2e 00 00
00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 53 48 89 f3 48 83 ec 10 48 89 7c
24 08
[ 274.448422] RSP: 002b:
00007ffcd9b76db8 EFLAGS:
00000246 ORIG_RAX:
000000000000002e
[ 274.455978] RAX:
ffffffffffffffda RBX:
0000000000000040 RCX:
00007ff4ae0e6e87
[ 274.463104] RDX:
0000000000000000 RSI:
00000000006092e0 RDI:
0000000000000003
[ 274.470228] RBP:
0000000000000000 R08:
00007ffcd9bc40a0 R09:
00007ffcd9bc4080
[ 274.477349] R10:
000000000000060a R11:
0000000000000246 R12:
0000000000000003
[ 274.484475] R13:
0000000000000016 R14:
00007ffcd9b77fa0 R15:
00007ffcd9b78da4
[ 274.491602] Modules linked in: cls_bpf sch_ingress iptable_filter
ip_tables algif_hash af_alg x86_pkg_temp_thermal fuse [last unloaded:
test_bpf]
[ 274.504634] CR2:
0000000000000000
[ 274.507976] ---[ end trace
196d18386545eae1 ]---
[ 274.512588] RIP: 0010: (null)
[ 274.516334] Code: Bad RIP value.
[ 274.519557] RSP: 0018:
ffffbc9681f83540 EFLAGS:
00010286
[ 274.524775] RAX:
0000000000000000 RBX:
ffffdc967fa80a18 RCX:
0000000000000000
[ 274.531921] RDX:
ffff9db2ee08b540 RSI:
000000000000000e RDI:
ffffdc967fa809a0
[ 274.539082] RBP:
ffffbc9681f83580 R08:
ffff9db2c4d62690 R09:
000000000000000c
[ 274.546205] R10:
0000000000000000 R11:
ffff9db2ee08b540 R12:
ffff9db31ce7c000
[ 274.553329] R13:
0000000000000001 R14:
000000000000000c R15:
ffff9db3179cf400
[ 274.560456] FS:
00007ff4ae7c5740(0000) GS:
ffff9db31fa80000(0000)
knlGS:
0000000000000000
[ 274.568541] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 274.574277] CR2:
ffffffffffffffd6 CR3:
00000004574da004 CR4:
00000000003606e0
[ 274.581403] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 274.588535] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 274.595658] Kernel panic - not syncing: Fatal exception in interrupt
[ 274.602046] Kernel Offset: 0x14400000 from 0xffffffff81000000
(relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 274.612827] ---[ end Kernel panic - not syncing: Fatal exception in
interrupt ]---
[ 274.620387] ------------[ cut here ]------------
I'm also seeing the same failure on x86_64, and it reproduces
consistently.
>From poking around it looks like the skb's dst entry is being used
to calculate the mtu in:
mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
...but because that dst_entry has an "ops" value set to md_dst_ops,
the various ops (including mtu) are not set:
crash> struct sk_buff._skb_refdst
ffff928f87447700 -x
_skb_refdst = 0xffffcd6fbf5ea590
crash> struct dst_entry.ops 0xffffcd6fbf5ea590
ops = 0xffffffffa0193800
crash> struct dst_ops.mtu 0xffffffffa0193800
mtu = 0x0
crash>
I confirmed that the dst entry also has dst->input set to
dst_md_discard, so it looks like it's an entry that's been
initialized via __metadata_dst_init alright.
I think the fix here is to use skb_valid_dst(skb) - it checks
for DST_METADATA also, and with that fix in place, the
problem - which was previously 100% reproducible - disappears.
The below patch resolves the panic and all bpf tunnel tests pass
without incident.
Fixes:
c8b34e680a09 ("ip_tunnel: Add tnl_update_pmtu in ip_md_tunnel_xmit")
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Tested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 6 Mar 2019 09:42:53 +0000 (10:42 +0100)]
ipv4/route: fail early when inet dev is missing
If a non local multicast packet reaches ip_route_input_rcu() while
the ingress device IPv4 private data (in_dev) is NULL, we end up
doing a NULL pointer dereference in IN_DEV_MFORWARD().
Since the later call to ip_route_input_mc() is going to fail if
!in_dev, we can fail early in such scenario and avoid the dangerous
code path.
v1 -> v2:
- clarified the commit message, no code changes
Reported-by: Tianhao Zhao <tizhao@redhat.com>
Fixes:
e58e41596811 ("net: Enable support for VRF with ipv4 multicast")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Wed, 6 Mar 2019 08:12:34 +0000 (11:12 +0300)]
net: hns3: Fix a logical vs bitwise typo
There were a couple logical ORs accidentally mixed in with the bitwise
ORs.
Fixes:
e8149933b1fa ("net: hns3: remove hnae3_get_bit in data path")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
wenxu [Tue, 5 Mar 2019 00:29:28 +0000 (08:29 +0800)]
net/sched: act_tunnel_key: Fix double free dst_cache
dst_cache_destroy will be called in dst_release
dst_release-->dst_destroy_rcu-->dst_destroy-->metadata_dst_free
-->dst_cache_destroy
It should not call dst_cache_destroy before dst_release
Fixes:
41411e2fd6b8 ("net/sched: act_tunnel_key: Add dst_cache support")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Mon, 4 Mar 2019 22:26:10 +0000 (23:26 +0100)]
tipc: fix RDM/DGRAM connect() regression
Fix regression bug introduced in
commit
365ad353c256 ("tipc: reduce risk of user starvation during link
congestion")
Only signal -EDESTADDRREQ for RDM/DGRAM if we don't have a cached
sockaddr.
Fixes:
365ad353c256 ("tipc: reduce risk of user starvation during link congestion")
Signed-off-by: Erik Hugne <erik.hugne@gmail.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 5 Mar 2019 19:28:25 +0000 (11:28 -0800)]
Merge tag 'mips_5.1' of git://git./linux/kernel/git/mips/linux
Pull MIPS updates from Paul Burton:
- Support for the MIPSr6 MemoryMapID register & Global INValidate TLB
(GINVT) instructions, allowing for more efficient TLB maintenance
when running on a CPU such as the I6500 that supports these.
- Enable huge page support for MIPS64r6.
- Optimize post-DMA cache sync by removing that code entirely for
kernel configurations in which we know it won't be needed.
- The number of pages allocated for interrupt stacks is now calculated
correctly, where before we would wastefully allocate too much memory
in some configurations.
- The ath79 platform migrates to devicetree.
- The bcm47xx platform sees fixes for the Buffalo WHR-G54S board.
- The ingenic/jz4740 platform gains support for appended devicetrees.
- The cavium_octeon, lantiq, loongson32 & sgi-ip27 platforms all see
cleanups as do various pieces of core architecture code.
* tag 'mips_5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (66 commits)
MIPS: lantiq: Remove separate GPHY Firmware loader
MIPS: ingenic: Add support for appended devicetree
MIPS: SGI-IP27: rework HUB interrupts
MIPS: SGI-IP27: do boot CPU init later
MIPS: SGI-IP27: do xtalk scanning later
MIPS: SGI-IP27: use pr_info/pr_emerg and pr_cont to fix output
MIPS: SGI-IP27: clean up bridge access and header files
MIPS: SGI-IP27: get rid of volatile and hubreg_t
MIPS: irq: Allocate accurate order pages for irq stack
MIPS: dma-noncoherent: Remove bogus condition in dma_sync_phys()
MIPS: eBPF: Remove REG_32BIT_ZERO_EX
MIPS: eBPF: Always return sign extended 32b values
MIPS: CM: Fix indentation
MIPS: BCM47XX: Fix/improve Buffalo WHR-G54S support
MIPS: OCTEON: program rx/tx-delay always from DT
MIPS: OCTEON: delete board-specific link status
MIPS: OCTEON: don't lie about interface type of CN3005 board
MIPS: OCTEON: warn if deprecated link status is being used
MIPS: OCTEON: add fixed-link nodes to in-kernel device tree
MIPS: Delete unused flush_cache_sigtramp()
...
Linus Torvalds [Tue, 5 Mar 2019 19:17:23 +0000 (11:17 -0800)]
Merge branch 'parisc-5.1-1' of git://git./linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The most important changes in this patch set are:
- DMA-related cleanups for parisc with the aim to move anything not
required by drivers out of <asm/dma-mapping.h>, by Christoph
Hellwig
- Switch to memblock_alloc(), by Mike Rapoport
- Makefile cleanups by Masahiro Yamada
- Switch to bust_spinlocks(), by Sergey Senozhatsky
- Improved initial SMP affinity selection for IRQs
- Added IPI- and rescheduling interrupts in /proc/interrupts output"
* 'parisc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (21 commits)
parisc: use memblock_alloc() instead of custom get_memblock()
parisc: Add constants for various PDC firmware calls
parisc: Add constant for PDC_PAT_COMPLEX firmware call
parisc: Show machine product number during boot
parisc: Add constants for PDC_RELOCATE PDC call
parisc: Add PDC_CRASH_PREP PDC function number
parisc: Use F_EXTEND() macro in iosapic code
parisc: remove the HBA_DATA macro
parisc/lba_pci: use container_of in LBA_DEV
parisc/dino: use container_of in DINO_DEV
parisc: properly type the return value of parisc_walk_tree
parisc: properly type the iommu field in struct pci_hba_data
parisc: turn GET_IOC into an inline function
parisc: move internal implementation details out of <asm/dma-mapping.h>
parisc: don't include <asm/cacheflush.h> in <asm/dma-mapping.h>
parisc: remove meaningless ccflags-y in arch/parisc/boot/Makefile
parisc: replace oops_in_progress manipulation with bust_spinlocks()
parisc: Improve initial IRQ to CPU assignment
parisc: Count IPI function call interrupts
parisc: Show rescheduling interrupts on SMP machines only
...
Linus Torvalds [Tue, 5 Mar 2019 19:13:10 +0000 (11:13 -0800)]
Merge tag 's390-5.1-1' of git://git./linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
- A copy of Arnds compat wrapper generation series
- Pass information about the KVM guest to the host in form the control
program code and the control program version code
- Map IOV resources to support PCI physical functions on s390
- Add vector load and store alignment hints to improve performance
- Use the "jdd" constraint with gcc 9 to make jump labels working again
- Remove amode workaround for old z/VM releases from the DCSS code
- Add support for in-kernel performance measurements using the CPU
measurement counter facility
- Introduce a new PMU device cpum_cf_diag to capture counters and store
thenn as event raw data.
- Bug fixes and cleanups
* tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
Revert "s390/cpum_cf: Add kernel message exaplanations"
s390/dasd: fix read device characteristic with CONFIG_VMAP_STACK=y
s390/suspend: fix prefix register reset in swsusp_arch_resume
s390: warn about clearing als implied facilities
s390: allow overriding facilities via command line
s390: clean up redundant facilities list setup
s390/als: remove duplicated in-place implementation of stfle
s390/cio: Use cpa range elsewhere within vfio-ccw
s390/cio: Fix vfio-ccw handling of recursive TICs
s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem
s390/cpum_cf: Handle EBUSY return code from CPU counter facility reservation
s390/cpum_cf: Add kernel message exaplanations
s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace
s390/cpum_cf: add ctr_stcctm() function
s390/cpum_cf: move common functions into a separate file
s390/cpum_cf: introduce kernel_cpumcf_avail() function
s390/cpu_mf: replace stcctm5() with the stcctm() function
s390/cpu_mf: add store cpu counter multiple instruction support
s390/cpum_cf: Add minimal in-kernel interface for counter measurements
s390/cpum_cf: introduce kernel_cpumcf_alert() to obtain measurement alerts
...
Linus Torvalds [Tue, 5 Mar 2019 19:02:12 +0000 (11:02 -0800)]
Merge tag 'm68k-for-v5.1-tag1' of git://git./linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- VLA removal
- gcc-8.x build fixes
- small improvements and cleanups
- defconfig updates
* tag 'm68k-for-v5.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Add -ffreestanding to CFLAGS
m68k/apollo: Fix comment in Makefile
dio: Fix buffer overflow in case of unknown board
m68k/defconfig: Update defconfigs for v5.0-rc1
m68k/atari: Avoid VLA use in atari_switches_setup()
m68k: Avoid VLA use in mangle_kernel_stack()
m68k/mac: Use '030 reset method on SE/30
m68k/mac: Remove obsolete comment
m68k/mac: Skip VIA port setup unless RTC is connected
m68k/mac: Clean up unused timer definitions
m68k/defconfig: Drop NET_VENDOR_<FOO>=n
Borislav Petkov [Tue, 5 Mar 2019 14:47:51 +0000 (15:47 +0100)]
x86: Deprecate a.out support
Linux supports ELF binaries for ~25 years now. a.out coredumping has
bitrotten quite significantly and would need some fixing to get it into
shape again but considering how even the toolchains cannot create a.out
executables in its default configuration, let's deprecate a.out support
and remove it a couple of releases later, instead.
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Richard Weinberger <richard@nod.at>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Jann Horn <jannh@google.com>
Cc: <linux-api@vger.kernel.org>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <x86@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 5 Mar 2019 18:00:35 +0000 (10:00 -0800)]
a.out: remove core dumping support
We're (finally) phasing out a.out support for good. As Borislav Petkov
points out, we've supported ELF binaries for about 25 years by now, and
coredumping in particular has bitrotted over the years.
None of the tool chains even support generating a.out binaries any more,
and the plan is to deprecate a.out support entirely for the kernel. But
I want to start with just removing the core dumping code, because I can
still imagine that somebody actually might want to support a.out as a
simpler biinary format.
Particularly if you generate some random binaries on the fly, ELF is a
much more complicated format (admittedly ELF also does have a lot of
toolchain support, mitigating that complexity a lot and you really
should have moved over in the last 25 years).
So it's at least somewhat possible that somebody out there has some
workflow that still involves generating and running a.out executables.
In contrast, it's very unlikely that anybody depends on debugging any
legacy a.out core files. But regardless, I want this phase-out to be
done in two steps, so that we can resurrect a.out support (if needed)
without having to resurrect the core file dumping that is almost
certainly not needed.
Jann Horn pointed to the <asm/a.out-core.h> file that my first trivial
cut at this had missed.
And Alan Cox points out that the a.out binary loader _could_ be done in
user space if somebody wants to, but we might keep just the loader in
the kernel if somebody really wants it, since the loader isn't that big
and has no really odd special cases like the core dumping does.
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Cc: Jann Horn <jannh@google.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 5 Mar 2019 17:09:55 +0000 (09:09 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu:
"API:
- Add helper for simple skcipher modes.
- Add helper to register multiple templates.
- Set CRYPTO_TFM_NEED_KEY when setkey fails.
- Require neither or both of export/import in shash.
- AEAD decryption test vectors are now generated from encryption
ones.
- New option CONFIG_CRYPTO_MANAGER_EXTRA_TESTS that includes random
fuzzing.
Algorithms:
- Conversions to skcipher and helper for many templates.
- Add more test vectors for nhpoly1305 and adiantum.
Drivers:
- Add crypto4xx prng support.
- Add xcbc/cmac/ecb support in caam.
- Add AES support for Exynos5433 in s5p.
- Remove sha384/sha512 from artpec7 as hardware cannot do partial
hash"
[ There is a merge of the Freescale SoC tree in order to pull in changes
required by patches to the caam/qi2 driver. ]
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (174 commits)
crypto: s5p - add AES support for Exynos5433
dt-bindings: crypto: document Exynos5433 SlimSSS
crypto: crypto4xx - add missing of_node_put after of_device_is_available
crypto: cavium/zip - fix collision with generic cra_driver_name
crypto: af_alg - use struct_size() in sock_kfree_s()
crypto: caam - remove redundant likely/unlikely annotation
crypto: s5p - update iv after AES-CBC op end
crypto: x86/poly1305 - Clear key material from stack in SSE2 variant
crypto: caam - generate hash keys in-place
crypto: caam - fix DMA mapping xcbc key twice
crypto: caam - fix hash context DMA unmap size
hwrng: bcm2835 - fix probe as platform device
crypto: s5p-sss - Use AES_BLOCK_SIZE define instead of number
crypto: stm32 - drop pointless static qualifier in stm32_hash_remove()
crypto: chelsio - Fixed Traffic Stall
crypto: marvell - Remove set but not used variable 'ivsize'
crypto: ccp - Update driver messages to remove some confusion
crypto: adiantum - add 1536 and 4096-byte test vectors
crypto: nhpoly1305 - add a test vector with len % 16 != 0
crypto: arm/aes-ce - update IV after partial final CTR block
...
Linus Torvalds [Tue, 5 Mar 2019 16:26:13 +0000 (08:26 -0800)]
Merge git://git./linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Here we go, another merge window full of networking and #ebpf changes:
1) Snoop DHCPACKS in batman-adv to learn MAC/IP pairs in the DHCP
range without dealing with floods of ARP traffic, from Linus
Lüssing.
2) Throttle buffered multicast packet transmission in mt76, from
Felix Fietkau.
3) Support adaptive interrupt moderation in ice, from Brett Creeley.
4) A lot of struct_size conversions, from Gustavo A. R. Silva.
5) Add peek/push/pop commands to bpftool, as well as bash completion,
from Stanislav Fomichev.
6) Optimize sk_msg_clone(), from Vakul Garg.
7) Add SO_BINDTOIFINDEX, from David Herrmann.
8) Be more conservative with local resends due to local congestion,
from Yuchung Cheng.
9) Allow vetoing of unsupported VXLAN FDBs, from Petr Machata.
10) Add health buffer support to devlink, from Eran Ben Elisha.
11) Add TXQ scheduling API to mac80211, from Toke Høiland-Jørgensen.
12) Add statistics to basic packet scheduler filter, from Cong Wang.
13) Add GRE tunnel support for mlxsw Spectrum-2, from Nir Dotan.
14) Lots of new IP tunneling forwarding tests, also from Nir Dotan.
15) Add 3ad stats to bonding, from Nikolay Aleksandrov.
16) Lots of probing improvements for bpftool, from Quentin Monnet.
17) Various nfp drive #ebpf JIT improvements from Jakub Kicinski.
18) Allow #ebpf programs to access gso_segs from skb shared info, from
Eric Dumazet.
19) Add sock_diag support for AF_XDP sockets, from Björn Töpel.
20) Support 22260 iwlwifi devices, from Luca Coelho.
21) Use rbtree for ipv6 defragmentation, from Peter Oskolkov.
22) Add JMP32 instruction class support to #ebpf, from Jiong Wang.
23) Add spinlock support to #ebpf, from Alexei Starovoitov.
24) Support 256-bit keys and TLS 1.3 in ktls, from Dave Watson.
25) Add device infomation API to devlink, from Jakub Kicinski.
26) Add new timestamping socket options which are y2038 safe, from
Deepa Dinamani.
27) Add RX checksum offloading for various sh_eth chips, from Sergei
Shtylyov.
28) Flow offload infrastructure, from Pablo Neira Ayuso.
29) Numerous cleanups, improvements, and bug fixes to the PHY layer
and many drivers from Heiner Kallweit.
30) Lots of changes to try and make packet scheduler classifiers run
lockless as much as possible, from Vlad Buslov.
31) Support BCM957504 chip in bnxt_en driver, from Erik Burrows.
32) Add concurrency tests to tc-tests infrastructure, from Vlad
Buslov.
33) Add hwmon support to aquantia, from Heiner Kallweit.
34) Allow 64-bit values for SO_MAX_PACING_RATE, from Eric Dumazet.
And I would be remiss if I didn't thank the various major networking
subsystem maintainers for integrating much of this work before I even
saw it. Alexei Starovoitov, Daniel Borkmann, Pablo Neira Ayuso,
Johannes Berg, Kalle Valo, and many others. Thank you!"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2207 commits)
net/sched: avoid unused-label warning
net: ignore sysctl_devconf_inherit_init_net without SYSCTL
phy: mdio-mux: fix Kconfig dependencies
net: phy: use phy_modify_mmd_changed in genphy_c45_an_config_aneg
net: dsa: mv88e6xxx: add call to mv88e6xxx_ports_cmode_init to probe for new DSA framework
selftest/net: Remove duplicate header
sky2: Disable MSI on Dell Inspiron 1545 and Gateway P-79
net/mlx5e: Update tx reporter status in case channels were successfully opened
devlink: Add support for direct reporter health state update
devlink: Update reporter state to error even if recover aborted
sctp: call iov_iter_revert() after sending ABORT
team: Free BPF filter when unregistering netdev
ip6mr: Do not call __IP6_INC_STATS() from preemptible context
isdn: mISDN: Fix potential NULL pointer dereference of kzalloc
net: dsa: mv88e6xxx: support in-band signalling on SGMII ports with external PHYs
cxgb4/chtls: Prefix adapter flags with CXGB4
net-sysfs: Switch to bitmap_zalloc()
mellanox: Switch to bitmap_zalloc()
bpf: add test cases for non-pointer sanitiation logic
mlxsw: i2c: Extend initialization by querying resources data
...
Martin Schwidefsky [Mon, 4 Mar 2019 07:25:00 +0000 (08:25 +0100)]
Revert "s390/cpum_cf: Add kernel message exaplanations"
This reverts commit
fb3a0b61e0d4e435016cc91575d051f841791da0.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Linus Torvalds [Tue, 5 Mar 2019 03:33:04 +0000 (19:33 -0800)]
Merge tag 'leds-for-5.1-rc1' of git://git./linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski:
- finalize previously announced support for initialization of pattern
triggers from Device Tree
- fix for null deref on firmware load failure in leds-lp55xx-common.c
* tag 'leds-for-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: lp55xx: fix null deref on firmware load failure
leds: trigger: timer: Add initialization from Device Tree
leds: trigger: oneshot: Add initialization from Device Tree
leds: trigger: pattern: Add pattern initialization from Device Tree
leds: Add helper for getting default pattern from Device Tree
dt-bindings: leds: Add pattern initialization from Device Tree
Linus Torvalds [Tue, 5 Mar 2019 03:29:37 +0000 (19:29 -0800)]
Merge tag 'hwmon-for-v5.1' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
- Add support for LM96000, DPS-650AB to existing drivers
- Use permission specific SENSOR[_DEVICE]_ATTR variants in several
drivers
- Replace S_<PERMS> with octal values in several drivers
- Update some license headers
- Various minor fixes and improvements in several drivers
* tag 'hwmon-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (89 commits)
dt-bindings: hwmon: Add missing documentation for lm75
hwmon: (ad7418) Add device tree probing
hwmon: (ad741x) Add DT bindings for Analog Devices AD741x
hwmon: (ntc_thermistor) Convert to new hwmon API
hwmon: (pwm-fan) Add optional regulator support
dt-bindings: hwmon: Add optional regulator support to pwm-fan
hwmon: (f71882fg) Mark expected switch fall-through
hwmon: (ad7418) Catch I2C errors
hwmon: (lm85) add support for LM96000 high frequencies
hwmon: (lm85) support the LM96000
dt-bindings: Add LM96000 as a trivial device
hwmon: (lm85) remove freq_map size hardcodes
hwmon: (occ) Fix license headers
hwmon: (via-cputemp) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (vexpress-hwmon) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (tmp421) Replace S_<PERMS> with octal values
hwmon: (tmp103) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (tmp102) Replace S_<PERMS> with octal values
hwmon: (tc74) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (tc654) Use permission specific SENSOR[_DEVICE]_ATTR variants
...
Linus Torvalds [Tue, 5 Mar 2019 03:23:56 +0000 (19:23 -0800)]
Merge tag 'spi-v5.1' of git://git./linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"A fairly quiet release for SPI, the biggest thing is the conversion to
use GPIO descriptors which is now 90% done but still needs some
stragglers converting.
Summary:
- Support for inter-word delays
- Conversion of the core and most drivers to use GPIO descriptors for
GPIO controlled chip selects
- New drivers for NXP FlexSPI and QuadSPI, SiFive and Spreadtrum"
* tag 'spi-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (104 commits)
spi: sh-msiof: Restrict bits per word to 8/16/24/32 on R-Car Gen2/3
spi: sifive: Remove redundant dev_err call in sifive_spi_probe()
spi: sifive: Remove spi_master_put in sifive_spi_remove()
spi: spi-gpio: fix SPI_CS_HIGH capability
spi: pxa2xx: Setup maximum supported DMA transfer length
spi: sifive: Add driver for the SiFive SPI controller
spi: sifive: Add DT documentation for SiFive SPI controller
spi: sprd: Add a prefix for SPI DMA channel macros
spi: sprd: spi: sprd: Add DMA mode support
dt-bindings: spi: Add the DMA properties for the SPI dma mode
spi: sprd: Add the SPI irq function for the SPI DMA mode
dt-bindings: spi: imx: Add an entry for the i.MX8QM compatible
spi: use gpio[d]_set_value_cansleep for setting chipselect GPIO
spi: gpio: Advertise support for SPI_CS_HIGH
spi: sh-msiof: Replace spi_master by spi_controller
spi: sh-hspi: Replace spi_master by spi_controller
spi: rspi: Replace spi_master by spi_controller
spi: atmel-quadspi: add support for sam9x60 qspi controller
dt-bindings: spi: atmel-quadspi: QuadSPI driver for Microchip SAM9X60
spi: atmel-quadspi: add support for named peripheral clock
...
Linus Torvalds [Tue, 5 Mar 2019 03:20:52 +0000 (19:20 -0800)]
Merge tag 'regulator-v5.1' of git://git./linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"The bulk of the standout changes in this release are cleanups, with
the core work being a combination of factoring out common code into
helpers and the completion of the conversion of the core to use GPIO
descriptors.
Summary:
- Addition of helper functions for current limits and conversion of
drivers to use them by Axel Lin.
- Lots and lots of cleanups from Axel Lin.
- Conversion of the core to use GPIO descriptors rather than numbers
by Linus Walleij.
- New drivers for Maxim MAX77650 and ROHM
BD70528"
* tag 'regulator-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (131 commits)
regulator: mc13xxx: Constify regulator_ops variables
regulator: palmas: Constify palmas_smps_ramp_delay array
regulator: wm831x-dcdc: Convert to use regulator_set/get_current_limit_regmap
regulator: pv88090: Convert to use regulator_set/get_current_limit_regmap
regulator: pv88080: Convert to use regulator_set/get_current_limit_regmap
regulator: pv88060: Convert to use regulator_set/get_current_limit_regmap
regulator: max77650: Convert to use regulator_set/get_current_limit_regmap
regulator: lp873x: Convert to use regulator_set/get_current_limit_regmap
regulator: lp872x: Convert to use regulator_set/get_current_limit_regmap
regulator: da9210: Convert to use regulator_set/get_current_limit_regmap
regulator: da9055: Convert to use regulator_set/get_current_limit_regmap
regulator: core: Add set/get_current_limit helpers for regmap users
regulator: Fix comment for csel_reg and csel_mask
regulator: stm32-vrefbuf: add power management support
regulator: 88pm8607: Remove unused fields from struct pm8607_regulator_info
regulator: 88pm8607: Simplify pm8607_list_voltage implementation
regulator: cpcap: Constify omap4_regulators and xoom_regulators
regulator: cpcap: Remove unused vsel_shift from struct cpcap_regulator
dt-bindings: regulator: tps65218: rectify units of LS3
dt-bindings: regulator: add LS2 load switch documentation
...
Linus Torvalds [Tue, 5 Mar 2019 03:16:09 +0000 (19:16 -0800)]
Merge tag 'regmap-v5.1' of git://git./linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"There are only two changes here:
- fix for conflicting attributes on the rbtree node structure
- implementation of main status register support in the interrupt
code which supports chips that have a register to cut down on the
number of per-interrupt status registers that need to be checked
when handling interrupts"
* tag 'regmap-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Remove attribute packed from struct 'regcache_rbtree_node'
regmap: regmap-irq: Add main status register support
Linus Torvalds [Tue, 5 Mar 2019 03:07:02 +0000 (19:07 -0800)]
Merge tag 'mmc-v5.1' of git://git./linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Fixup max_discard/trim calculations
- Announce SD specs greater than 4.0
- Add discard support for SD cards
- Don't do retries for CMD6 (SWITCH command)
- Various cleanups and re-structuring
MMC host:
- cqhci:
* Add maintainers for eMMC CQHCI driver
- sdhci:
* Consolidate WP GPIO code
* Add ADMA3 DMA support for V4 enabled host
* Fixup card detect support in pci-o2micro driver
* Add support for CMDQ and SDMMC pads auto-calibration in tegra
driver
* Add DCMD support and CMDQ support, support for i.MX6ULL variant,
fixup HS400 timing issue and add HS400_ES support for i.MX8QXP
to esdhc-imx driver
* Avoid CRC errors by adjusting settings to speed mode and fixup
card initialization for high speed mode in renesas_sdhi
* Fixup timeout settings for omap
* Enable 8 bits bus-width support in atmel-mci
* Convert some legacy code in jz4740 driver to use modern APIs
* Send a CMD12 to clear DPSM at errors for STM32 sdmmc mmci
driver"
* tag 'mmc-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (69 commits)
mmc:fix a bug when max_discard is 0
mmc: core: Add a debug print when the card may have been replaced
mmc: core: Add sd discard timeout
mmc: core: Add discard support to sd
mmc: sdhci-esdhc-imx: clear the HALT bit when enable CQE
mmc: core: do not retry CMD6 in __mmc_switch()
mmc: core: Convert mmc_align_data_size() into an SDIO specific function
mmc: core: Move mmc_of_parse_voltage() to host.c
mmc: core: Convert mmc_regulator_get_ocrmask() to static
mmc: core: Move regulator helpers to separate file
mmc: of_mmc_spi: Convert to mmc_of_parse_voltage()
mmc: core: Drop retries as in-parameter to mmc_wait_for_app_cmd()
mmc: core: Convert mmc_wait_for_app_cmd() to static
mmc: renesas_sdhi: Change HW adjustment register according to speed mode
mmc: mmci: Send a CMD12 to clear the DPSM at errors
mmc: sdhci-xenon: Fixup already marked switch fall-through
mmc: sdhci-tegra: drop ->get_ro() implementation
mmc: sdhci-omap: drop ->get_ro() implementation
mmc: sdhci: use WP GPIO in sdhci_check_ro()
mmc: wmt-sdmmc: Drop unused include
...
Linus Torvalds [Tue, 5 Mar 2019 03:05:02 +0000 (19:05 -0800)]
Merge tag 'i3c/for-5.1' of git://git./linux/kernel/git/i3c/linux
Pull i3c updates from Boris Brezillon:
- Add a /* fall-through */ comment in the dw-i3c-master driver
- Update the I3C entries in MAINTAINERS to add an IRC chan
* tag 'i3c/for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
i3c: master: dw-i3c-master: mark expected switch fall-through
MAINTAINERS: Add an IRC channel for the I3C subsystem
Linus Torvalds [Tue, 5 Mar 2019 02:59:37 +0000 (18:59 -0800)]
Merge tag 'mtd/for-5.1' of git://git.infradead.org/linux-mtd
Pull MTD updates from Boris Brezillon:
"Core MTD changes:
- Use struct_size() where appropriate
- mtd_{read,write}() as wrappers around mtd_{read,write}_oob()
- Fix misuse of PTR_ERR() in docg3
- Coding style improvements in mtdcore.c
SPI NOR changes:
Core changes:
- Add support of octal mode I/O transfer
- Add a bunch of SPI NOR entries to the flash_info table
SPI NOR controller driver changes:
- cadence-quadspi:
* Add support for Octal SPI controller
* write upto 8-bytes data in STIG mode
- mtk-quadspi:
* rename config to a common one
* add SNOR_HWCAPS_READ to spi_nor_hwcaps mask
- Add Tudor as SPI-NOR co-maintainer
NAND changes:
NAND core changes:
- Fourth batch of fixes/cleanup to the raw NAND core impacting
various controller drivers (Sunxi, Marvell, MTK, TMIO, OMAP2).
- Check the return code of nand_reset() and nand_readid_op().
- Remove ->legacy.erase and single_erase().
- Simplify the locking.
- Several implicit fall through annotations.
Raw NAND controllers drivers changes:
- Fix various possible object reference leaks (MTK, JZ4780, Atmel)
- ST:
* Add support for STM32 FMC2 NAND flash controller
- Meson:
* Add support for Amlogic NAND flash controller
- Denali:
* Several cleanup patches
- Sunxi:
* Several cleanup patches
- FSMC:
* Disable NAND on remove()
* Reset NAND timings on resume()
SPI-NAND drivers changes:
- Toshiba:
* Add support for all Toshiba products.
- Macronix:
* Fix ECC status read.
- Gigadevice:
* Add support for GD5F1GQ4UExxG"
* tag 'mtd/for-5.1' of git://git.infradead.org/linux-mtd: (64 commits)
mtd: spi-nor: Fix wrong abbreviation HWCPAS
mtd: spi-nor: cadence-quadspi: fix spelling mistake: "Couldnt't" -> "Couldn't"
mtd: spi-nor: Add support for en25qh64
mtd: spi-nor: Add support for MX25V8035F
mtd: spi-nor: Add support for EN25Q80A
mtd: spi-nor: cadence-quadspi: Add support for Octal SPI controller
dt-bindings: cadence-quadspi: Add new compatible for AM654 SoC
mtd: spi-nor: split s25fl128s into s25fl128s0 and s25fl128s1
mtd: spi-nor: cadence-quadspi: write upto 8-bytes data in STIG mode
mtd: spi-nor: Add support for mx25u3235f
mtd: rawnand: denali_dt: remove single anonymous clock support
mtd: rawnand: mtk: fix possible object reference leak
mtd: rawnand: jz4780: fix possible object reference leak
mtd: rawnand: atmel: fix possible object reference leak
mtd: rawnand: fsmc: Disable NAND on remove()
mtd: rawnand: fsmc: Reset NAND timings on resume()
mtd: spinand: Add support for GigaDevice GD5F1GQ4UExxG
mtd: rawnand: denali: remove unused dma_addr field from denali_nand_info
mtd: rawnand: denali: remove unused function argument 'raw'
mtd: rawnand: denali: remove unneeded denali_reset_irq() call
...
Linus Torvalds [Tue, 5 Mar 2019 02:56:36 +0000 (18:56 -0800)]
Merge tag 'vfio-v5.1-rc1' of git://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Switch mdev to generic UUID API (Andy Shevchenko)
- Fixup platform reset include paths (Masahiro Yamada)
- Fix usage of MINORMASK (Chengguang Xu)
- Remove noise from duplicate spapr table unsets (Alexey Kardashevskiy)
- Restore device state after PM reset (Alex Williamson)
- Ensure memory translation enabled for PCI ROM access (Eric Auger)
* tag 'vfio-v5.1-rc1' of git://github.com/awilliam/linux-vfio:
vfio_pci: Enable memory accesses before calling pci_map_rom
vfio/pci: Restore device state on PM transition
vfio/spapr_tce: Skip unsetting already unset table
samples/vfio-mdev/mtty: expand minor range when registering chrdev region
samples/vfio-mdev/mdpy: expand minor range when registering chrdev region
samples/vfio-mdev/mbochs: expand minor range when registering chrdev region
vfio: expand minor range when registering chrdev region
vfio: platform: reset: fix up include directives to remove ccflags-y
vfio-mdev: Switch to use new generic UUID API
Slavomir Kaslev [Thu, 7 Feb 2019 15:45:19 +0000 (17:45 +0200)]
fs: Make splice() and tee() take into account O_NONBLOCK flag on pipes
The current implementation of splice() and tee() ignores O_NONBLOCK set
on pipe file descriptors and checks only the SPLICE_F_NONBLOCK flag for
blocking on pipe arguments. This is inconsistent since splice()-ing
from/to non-pipe file descriptors does take O_NONBLOCK into
consideration.
Fix this by promoting O_NONBLOCK, when set on a pipe, to
SPLICE_F_NONBLOCK.
Some context for how the current implementation of splice() leads to
inconsistent behavior. In the ongoing work[1] to add VM tracing
capability to trace-cmd we stream tracing data over named FIFOs or
vsockets from guests back to the host.
When we receive SIGINT from user to stop tracing, we set O_NONBLOCK on
the input file descriptor and set SPLICE_F_NONBLOCK for the next call to
splice(). If splice() was blocked waiting on data from the input FIFO,
after SIGINT splice() restarts with the same arguments (no
SPLICE_F_NONBLOCK) and blocks again instead of returning -EAGAIN when no
data is available.
This differs from the splice() behavior when reading from a vsocket or
when we're doing a traditional read()/write() loop (trace-cmd's
--nosplice argument).
With this patch applied we get the same behavior in all situations after
setting O_NONBLOCK which also matches the behavior of doing a
read()/write() loop instead of splice().
This change does have potential of breaking users who don't expect
EAGAIN from splice() when SPLICE_F_NONBLOCK is not set. OTOH programs
that set O_NONBLOCK and don't anticipate EAGAIN are arguably buggy[2].
[1] https://github.com/skaslev/trace-cmd/tree/vsock
[2] https://github.com/torvalds/linux/blob/
d47e3da1759230e394096fd742aad423c291ba48/fs/read_write.c#L1425
Signed-off-by: Slavomir Kaslev <kaslevs@vmware.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David S. Miller [Mon, 4 Mar 2019 21:26:15 +0000 (13:26 -0800)]
Merge git://git./linux/kernel/git/davem/net
Linus Torvalds [Mon, 4 Mar 2019 21:24:27 +0000 (13:24 -0800)]
Merge branch 'fixes' of git://git./linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"Assorted fixes that sat in -next for a while, all over the place"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
aio: Fix locking in aio_poll()
exec: Fix mem leak in kernel_read_file
copy_mount_string: Limit string length to PATH_MAX
cgroup: saner refcounting for cgroup_root
fix cgroup_do_mount() handling of failure exits
Arnd Bergmann [Mon, 4 Mar 2019 20:40:32 +0000 (21:40 +0100)]
net/sched: avoid unused-label warning
The label is only used from inside the #ifdef and should be
hidden the same way, to avoid this warning:
net/sched/act_tunnel_key.c: In function 'tunnel_key_init':
net/sched/act_tunnel_key.c:389:1: error: label 'release_tun_meta' defined but not used [-Werror=unused-label]
release_tun_meta:
Fixes:
41411e2fd6b8 ("net/sched: act_tunnel_key: Add dst_cache support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Mon, 4 Mar 2019 20:38:03 +0000 (21:38 +0100)]
net: ignore sysctl_devconf_inherit_init_net without SYSCTL
When CONFIG_SYSCTL is turned off, we get a link failure for
the newly introduced tuning knob.
net/ipv6/addrconf.o: In function `addrconf_init_net':
addrconf.c:(.text+0x31dc): undefined reference to `sysctl_devconf_inherit_init_net'
Add an IS_ENABLED() check to fall back to the default behavior
(sysctl_devconf_inherit_init_net=0) here.
Fixes:
856c395cfa63 ("net: introduce a knob to control whether to inherit devconf config")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christian Brauner <christian@brauner.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Mon, 4 Mar 2019 20:35:10 +0000 (21:35 +0100)]
phy: mdio-mux: fix Kconfig dependencies
MDIO_BUS_MUX can only be selected if OF_MDIO is already turned on:
WARNING: unmet direct dependencies detected for MDIO_BUS_MUX
Depends on [n]: NETDEVICES [=y] && MDIO_BUS [=m] && OF_MDIO [=n]
Selected by [m]:
- MDIO_BUS_MUX_MULTIPLEXER [=m] && NETDEVICES [=y] && MDIO_BUS [=m] && OF [=y]
Fixes:
7865ad6551c9 ("drivers: net: phy: mdio-mux: Add support for Generic Mux controls")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Mon, 4 Mar 2019 18:50:40 +0000 (19:50 +0100)]
net: phy: use phy_modify_mmd_changed in genphy_c45_an_config_aneg
As can be seen from the usage of the return value, we should use
phy_modify_mmd_changed() here.
Fixes:
9a5dc8af4416 ("net: phy: add genphy_c45_an_config_aneg")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Mon, 4 Mar 2019 18:39:03 +0000 (19:39 +0100)]
net: dsa: mv88e6xxx: add call to mv88e6xxx_ports_cmode_init to probe for new DSA framework
In the original patch I missed to add mv88e6xxx_ports_cmode_init()
to the second probe function, the one for the new DSA framework.
Fixes:
ed8fe20205ac ("net: dsa: mv88e6xxx: prevent interrupt storm caused by mv88e6390x_port_set_cmode")
Reported-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Souptick Joarder [Mon, 4 Mar 2019 18:20:48 +0000 (23:50 +0530)]
selftest/net: Remove duplicate header
Remove duplicate header which is included twice.
Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kai-Heng Feng [Mon, 4 Mar 2019 07:00:03 +0000 (15:00 +0800)]
sky2: Disable MSI on Dell Inspiron 1545 and Gateway P-79
Some sky2 chips fire IRQ after S3, before the driver is fully resumed:
[ 686.804877] do_IRQ: 1.37 No irq handler for vector
This is likely a platform bug that device isn't fully quiesced during
S3. Use MSI-X, maskable MSI or INTx can prevent this issue from
happening.
Since MSI-X and maskable MSI are not supported by this device, fallback
to use INTx on affected platforms.
BugLink: https://bugs.launchpad.net/bugs/1807259
BugLink: https://bugs.launchpad.net/bugs/1809843
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 4 Mar 2019 19:00:43 +0000 (11:00 -0800)]
Merge branch 'Devlink-health-updates'
Eran Ben Elisha says:
====================
Devlink health updates
This patchset includes a fix [patch 01] to the devlink health state update, in
case recover was aborted.
In addition, it includes a small enhancement to the infrastructure in order to
allow direct state update in run-time, and use it from mlx5e tx reporter.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eran Ben Elisha [Sun, 3 Mar 2019 08:57:31 +0000 (10:57 +0200)]
net/mlx5e: Update tx reporter status in case channels were successfully opened
Once channels were successfully opened, update tx reporter health state to
healthy. This is needed for the following scenario:
- SQ has an un-recovered error reported to the devlink health, resulting tx
reporter state to be error.
- Current channels (including this SQ) are closed
- New channels are opened
After that flow, the original error was "solved", and tx reporter state
should be healthy. However, as it was resolved as a side effect, and not
via tx reporter recover method, driver needs to inform devlink health
about it.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eran Ben Elisha [Sun, 3 Mar 2019 08:57:30 +0000 (10:57 +0200)]
devlink: Add support for direct reporter health state update
It is possible that a reporter state will be updated due to a recover flow
which is not triggered by a devlink health related operation, but as a side
effect of some other operation in the system.
Expose devlink health API for a direct update of a reporter status.
Move devlink_health_reporter_state enum definition to devlink.h so it could
be used from drivers as a parameter of devlink_health_reporter_state_update.
In addition, add trace_devlink_health_reporter_state_update to provide user
notification for reporter state change.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eran Ben Elisha [Sun, 3 Mar 2019 08:57:29 +0000 (10:57 +0200)]
devlink: Update reporter state to error even if recover aborted
If devlink_health_report() aborted the recover flow due to grace period checker,
it left the reporter status as DEVLINK_HEALTH_REPORTER_STATE_HEALTHY, which is
a bug. Fix that by always setting the reporter state to
DEVLINK_HEALTH_REPORTER_STATE_ERROR prior to running the checker mentioned above.
In addition, save the previous health_state in a temporary variable, then use
it in the abort check comparison instead of using reporter->health_state which
might be already changed.
Fixes:
c8e1da0bf923 ("devlink: Add health report functionality")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sun, 3 Mar 2019 08:50:26 +0000 (16:50 +0800)]
sctp: call iov_iter_revert() after sending ABORT
The user msg is also copied to the abort packet when doing SCTP_ABORT in
sctp_sendmsg_check_sflags(). When SCTP_SENDALL is set, iov_iter_revert()
should have been called for sending abort on the next asoc with copying
this msg. Otherwise, memcpy_from_msg() in sctp_make_abort_user() will
fail and return error.
Fixes:
4910280503f3 ("sctp: add support for snd flag SCTP_SENDALL process in sendmsg")
Reported-by: Ying Xu <yinxu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Sun, 3 Mar 2019 07:35:51 +0000 (07:35 +0000)]
team: Free BPF filter when unregistering netdev
When team is used in loadbalance mode a BPF filter can be used to
provide a hash which will determine the Tx port.
When the netdev is later unregistered the filter is not freed which
results in memory leaks [1].
Fix by freeing the program and the corresponding filter when
unregistering the netdev.
[1]
unreferenced object 0xffff8881dbc47cc8 (size 16):
comm "teamd", pid 3068, jiffies
4294997779 (age 438.247s)
hex dump (first 16 bytes):
a3 00 6b 6b 6b 6b 6b 6b 88 a5 82 e1 81 88 ff ff ..kkkkkk........
backtrace:
[<
000000008a3b47e3>] team_nl_cmd_options_set+0x88f/0x11b0
[<
00000000c4f4f27e>] genl_family_rcv_msg+0x78f/0x1080
[<
00000000610ef838>] genl_rcv_msg+0xca/0x170
[<
00000000a281df93>] netlink_rcv_skb+0x132/0x380
[<
000000004d9448a2>] genl_rcv+0x29/0x40
[<
000000000321b2f4>] netlink_unicast+0x4c0/0x690
[<
000000008c25dffb>] netlink_sendmsg+0x929/0xe10
[<
00000000068298c5>] sock_sendmsg+0xc8/0x110
[<
0000000082a61ff0>] ___sys_sendmsg+0x77a/0x8f0
[<
00000000663ae29d>] __sys_sendmsg+0xf7/0x250
[<
0000000027c5f11a>] do_syscall_64+0x14d/0x610
[<
000000006cfbc8d3>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
00000000e23197e2>] 0xffffffffffffffff
unreferenced object 0xffff8881e182a588 (size 2048):
comm "teamd", pid 3068, jiffies
4294997780 (age 438.247s)
hex dump (first 32 bytes):
20 00 00 00 02 00 00 00 30 00 00 00 28 f0 ff ff .......0...(...
07 00 00 00 00 00 00 00 28 00 00 00 00 00 00 00 ........(.......
backtrace:
[<
000000002daf01fb>] lb_bpf_func_set+0x45c/0x6d0
[<
000000008a3b47e3>] team_nl_cmd_options_set+0x88f/0x11b0
[<
00000000c4f4f27e>] genl_family_rcv_msg+0x78f/0x1080
[<
00000000610ef838>] genl_rcv_msg+0xca/0x170
[<
00000000a281df93>] netlink_rcv_skb+0x132/0x380
[<
000000004d9448a2>] genl_rcv+0x29/0x40
[<
000000000321b2f4>] netlink_unicast+0x4c0/0x690
[<
000000008c25dffb>] netlink_sendmsg+0x929/0xe10
[<
00000000068298c5>] sock_sendmsg+0xc8/0x110
[<
0000000082a61ff0>] ___sys_sendmsg+0x77a/0x8f0
[<
00000000663ae29d>] __sys_sendmsg+0xf7/0x250
[<
0000000027c5f11a>] do_syscall_64+0x14d/0x610
[<
000000006cfbc8d3>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
00000000e23197e2>] 0xffffffffffffffff
Fixes:
01d7f30a9f96 ("team: add loadbalance mode")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Sun, 3 Mar 2019 07:34:57 +0000 (07:34 +0000)]
ip6mr: Do not call __IP6_INC_STATS() from preemptible context
Similar to commit
44f49dd8b5a6 ("ipmr: fix possible race resulting from
improper usage of IP_INC_STATS_BH() in preemptible context."), we cannot
assume preemption is disabled when incrementing the counter and
accessing a per-CPU variable.
Preemption can be enabled when we add a route in process context that
corresponds to packets stored in the unresolved queue, which are then
forwarded using this route [1].
Fix this by using IP6_INC_STATS() which takes care of disabling
preemption on architectures where it is needed.
[1]
[ 157.451447] BUG: using __this_cpu_add() in preemptible [
00000000] code: smcrouted/2314
[ 157.460409] caller is ip6mr_forward2+0x73e/0x10e0
[ 157.460434] CPU: 3 PID: 2314 Comm: smcrouted Not tainted
5.0.0-rc7-custom-03635-g22f2712113f1 #1336
[ 157.460449] Hardware name: Mellanox Technologies Ltd. MSN2100-CB2FO/SA001017, BIOS 5.6.5 06/07/2016
[ 157.460461] Call Trace:
[ 157.460486] dump_stack+0xf9/0x1be
[ 157.460553] check_preemption_disabled+0x1d6/0x200
[ 157.460576] ip6mr_forward2+0x73e/0x10e0
[ 157.460705] ip6_mr_forward+0x9a0/0x1510
[ 157.460771] ip6mr_mfc_add+0x16b3/0x1e00
[ 157.461155] ip6_mroute_setsockopt+0x3cb/0x13c0
[ 157.461384] do_ipv6_setsockopt.isra.8+0x348/0x4060
[ 157.462013] ipv6_setsockopt+0x90/0x110
[ 157.462036] rawv6_setsockopt+0x4a/0x120
[ 157.462058] __sys_setsockopt+0x16b/0x340
[ 157.462198] __x64_sys_setsockopt+0xbf/0x160
[ 157.462220] do_syscall_64+0x14d/0x610
[ 157.462349] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes:
0912ea38de61 ("[IPV6] MROUTE: Add stats in multicast routing module method ip6_mr_forward().")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Aditya Pakki [Sat, 2 Mar 2019 21:20:43 +0000 (15:20 -0600)]
isdn: mISDN: Fix potential NULL pointer dereference of kzalloc
Allocating memory via kzalloc for phi may fail and causes a
NULL pointer dereference. This patch avoids such a scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Fri, 1 Mar 2019 19:41:00 +0000 (20:41 +0100)]
net: dsa: mv88e6xxx: support in-band signalling on SGMII ports with external PHYs
If an external PHY is connected via SGMII and uses in-band signalling
then the auto-negotiated values aren't propagated to the port,
resulting in a broken link. See discussion in [0]. This patch adds
this propagation. We need to call mv88e6xxx_port_setup_mac(),
therefore export it from chip.c.
Successfully tested on a ZII DTU with
88E6390 switch and an
Aquantia AQCS109 PHY connected via SGMII to port 9.
[0] https://marc.info/?t=
155130287200001&r=1&w=2
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 4 Mar 2019 18:39:05 +0000 (10:39 -0800)]
get rid of legacy 'get_ds()' function
Every in-kernel use of this function defined it to KERNEL_DS (either as
an actual define, or as an inline function). It's an entirely
historical artifact, and long long long ago used to actually read the
segment selector valueof '%ds' on x86.
Which in the kernel is always KERNEL_DS.
Inspired by a patch from Jann Horn that just did this for a very small
subset of users (the ones in fs/), along with Al who suggested a script.
I then just took it to the logical extreme and removed all the remaining
gunk.
Roughly scripted with
git grep -l '(get_ds())' -- :^tools/ | xargs sed -i 's/(get_ds())/(KERNEL_DS)/'
git grep -lw 'get_ds' -- :^tools/ | xargs sed -i '/^#define get_ds()/d'
plus manual fixups to remove a few unusual usage patterns, the couple of
inline function cases and to fix up a comment that had become stale.
The 'get_ds()' function remains in an x86 kvm selftest, since in user
space it actually does something relevant.
Inspired-by: Jann Horn <jannh@google.com>
Inspired-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 3 Mar 2019 22:23:33 +0000 (14:23 -0800)]
aio: simplify - and fix - fget/fput for io_submit()
Al Viro root-caused a race where the IOCB_CMD_POLL handling of
fget/fput() could cause us to access the file pointer after it had
already been freed:
"In more details - normally IOCB_CMD_POLL handling looks so:
1) io_submit(2) allocates aio_kiocb instance and passes it to
aio_poll()
2) aio_poll() resolves the descriptor to struct file by req->file =
fget(iocb->aio_fildes)
3) aio_poll() sets ->woken to false and raises ->ki_refcnt of that
aio_kiocb to 2 (bumps by 1, that is).
4) aio_poll() calls vfs_poll(). After sanity checks (basically,
"poll_wait() had been called and only once") it locks the queue.
That's what the extra reference to iocb had been for - we know we
can safely access it.
5) With queue locked, we check if ->woken has already been set to
true (by aio_poll_wake()) and, if it had been, we unlock the
queue, drop a reference to aio_kiocb and bugger off - at that
point it's a responsibility to aio_poll_wake() and the stuff
called/scheduled by it. That code will drop the reference to file
in req->file, along with the other reference to our aio_kiocb.
6) otherwise, we see whether we need to wait. If we do, we unlock the
queue, drop one reference to aio_kiocb and go away - eventual
wakeup (or cancel) will deal with the reference to file and with
the other reference to aio_kiocb
7) otherwise we remove ourselves from waitqueue (still under the
queue lock), so that wakeup won't get us. No async activity will
be happening, so we can safely drop req->file and iocb ourselves.
If wakeup happens while we are in vfs_poll(), we are fine - aio_kiocb
won't get freed under us, so we can do all the checks and locking
safely. And we don't touch ->file if we detect that case.
However, vfs_poll() most certainly *does* touch the file it had been
given. So wakeup coming while we are still in ->poll() might end up
doing fput() on that file. That case is not too rare, and usually we
are saved by the still present reference from descriptor table - that
fput() is not the final one.
But if another thread closes that descriptor right after our fget()
and wakeup does happen before ->poll() returns, we are in trouble -
final fput() done while we are in the middle of a method:
Al also wrote a patch to take an extra reference to the file descriptor
to fix this, but I instead suggested we just streamline the whole file
pointer handling by submit_io() so that the generic aio submission code
simply keeps the file pointer around until the aio has completed.
Fixes:
bfe4037e722e ("aio: implement IOCB_CMD_POLL")
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: syzbot+503d4cc169fcec1cb18c@syzkaller.appspotmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arjun Vynipadath [Mon, 4 Mar 2019 12:13:02 +0000 (17:43 +0530)]
cxgb4/chtls: Prefix adapter flags with CXGB4
Some of these macros were conflicting with global namespace,
hence prefixing them with CXGB4.
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Mon, 4 Mar 2019 09:48:56 +0000 (11:48 +0200)]
net-sysfs: Switch to bitmap_zalloc()
Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Mon, 4 Mar 2019 08:57:00 +0000 (10:57 +0200)]
mellanox: Switch to bitmap_zalloc()
Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 4 Mar 2019 18:14:31 +0000 (10:14 -0800)]
Merge git://git./linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2019-03-04
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Add AF_XDP support to libbpf. Rationale is to facilitate writing
AF_XDP applications by offering higher-level APIs that hide many
of the details of the AF_XDP uapi. Sample programs are converted
over to this new interface as well, from Magnus.
2) Introduce a new cant_sleep() macro for annotation of functions
that cannot sleep and use it in BPF_PROG_RUN() to assert that
BPF programs run under preemption disabled context, from Peter.
3) Introduce per BPF prog stats in order to monitor the usage
of BPF; this is controlled by kernel.bpf_stats_enabled sysctl
knob where monitoring tools can make use of this to efficiently
determine the average cost of programs, from Alexei.
4) Split up BPF selftest's test_progs similarly as we already
did with test_verifier. This allows to further reduce merge
conflicts in future and to get more structure into our
quickly growing BPF selftest suite, from Stanislav.
5) Fix a bug in BTF's dedup algorithm which can cause an infinite
loop in some circumstances; also various BPF doc fixes and
improvements, from Andrii.
6) Various BPF sample cleanups and migration to libbpf in order
to further isolate the old sample loader code (so we can get
rid of it at some point), from Jakub.
7) Add a new BPF helper for BPF cgroup skb progs that allows
to set ECN CE code point and a Host Bandwidth Manager (HBM)
sample program for limiting the bandwidth used by v2 cgroups,
from Lawrence.
8) Enable write access to skb->queue_mapping from tc BPF egress
programs in order to let BPF pick TX queue, from Jesper.
9) Fix a bug in BPF spinlock handling for map-in-map which did
not propagate spin_lock_off to the meta map, from Yonghong.
10) Fix a bug in the new per-CPU BPF prog counters to properly
initialize stats for each CPU, from Eric.
11) Add various BPF helper prototypes to selftest's bpf_helpers.h,
from Willem.
12) Fix various BPF samples bugs in XDP and tracing progs,
from Toke, Daniel and Yonghong.
13) Silence preemption splat in test_bpf after BPF_PROG_RUN()
enforces it now everywhere, from Anders.
14) Fix a signedness bug in libbpf's btf_dedup_ref_type() to
get error handling working, from Dan.
15) Fix bpftool documentation and auto-completion with regards
to stream_{verdict,parser} attach types, from Alban.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 26 Feb 2019 17:16:04 +0000 (09:16 -0800)]
x86-64: add warning for non-canonical user access address dereferences
This adds a warning (once) for any kernel dereference that has a user
exception handler, but accesses a non-canonical address. It basically
is a simpler - and more limited - version of commit
9da3f2b74054
("x86/fault: BUG() when uaccess helpers fault on kernel addresses") that
got reverted.
Note that unlike that original commit, this only causes a warning,
because there are real situations where we currently can do this
(notably speculative argument fetching for uprobes etc). Also, unlike
that original commit, this _only_ triggers for #GP accesses, so the
cases of valid kernel pointers that cross into a non-mapped page aren't
affected.
The intent of this is two-fold:
- the uprobe/tracing accesses really do need to be more careful. In
particular, from a portability standpoint it's just wrong to think
that "a pointer is a pointer", and use the same logic for any random
pointer value you find on the stack. It may _work_ on x86-64, but it
doesn't necessarily work on other architectures (where the same
pointer value can be either a kernel pointer _or_ a user pointer, and
you really need to be much more careful in how you try to access it)
The warning can hopefully end up being a reminder that just any
random pointer access won't do.
- Kees in particular wanted a way to actually report invalid uses of
wild pointers to user space accessors, instead of just silently
failing them. Automated fuzzers want a way to get reports if the
kernel ever uses invalid values that the fuzzer fed it.
The non-canonical address range is a fair chunk of the address space,
and with this you can teach syzkaller to feed in invalid pointer
values and find cases where we do not properly validate user
addresses (possibly due to bad uses of "set_fs()").
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Jann Horn <jannh@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Mon, 4 Mar 2019 15:32:51 +0000 (15:32 +0000)]
Merge branch 'spi-5.1' into spi-next
Mark Brown [Mon, 4 Mar 2019 15:32:49 +0000 (15:32 +0000)]
Merge branch 'spi-5.0' into spi-linus
Mark Brown [Mon, 4 Mar 2019 15:32:43 +0000 (15:32 +0000)]
Merge branch 'regulator-5.1' into regulator-next
Mark Brown [Mon, 4 Mar 2019 15:32:41 +0000 (15:32 +0000)]
Merge branch 'regulator-5.0' into regulator-linus
Daniel Borkmann [Fri, 1 Mar 2019 21:08:21 +0000 (22:08 +0100)]
bpf: add test cases for non-pointer sanitiation logic
Add two additional tests for further asserting the
BPF_ALU_NON_POINTER logic with cases that were missed
previously.
Cc: Marek Majkowski <marek@cloudflare.com>
Cc: Arthur Fabre <afabre@cloudflare.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
David S. Miller [Mon, 4 Mar 2019 06:23:00 +0000 (22:23 -0800)]
Merge branch 'mlxsw-minimal-Add-ethtool-and-resource-query-support'
Ido Schimmel says:
====================
mlxsw: minimal: Add ethtool and resource query support
Vadim says:
The minimal driver is chip independent and uses I2C bus for chip access.
Its purpose is to support chassis management on systems equipped with
Mellanox switch ASICs. For example, from a BMC (Board Management
Controller) device.
Patches #1-#3 add ethtool support to the minimal driver so that QSFP/SFP
module info could be retrieved by the driver. This is done by exposing a
dummy netdev for each front panel port and implementing the required
ethtool operations.
Patches #4-#8 add resource query support. This allows the driver to
query the firmware about values of certain resources (e.g., maximum
number of ports). It is required on systems where the maximum number of
ports is larger than the hard coded default (64).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vadim Pasternak [Sun, 3 Mar 2019 09:12:16 +0000 (09:12 +0000)]
mlxsw: i2c: Extend initialization by querying resources data
Extend initialization flow by query requests for chip resources data in
order to obtain chip's specific capabilities, like the number of ports.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vadim Pasternak [Sun, 3 Mar 2019 09:12:15 +0000 (09:12 +0000)]
mlxsw: i2c: Extend input parameters list of command API
Extend input parameters list of command API in mlxsw_i2c_cmd() in order
to support initialization commands. Up until now, only access commands
were supported by I2C driver.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vadim Pasternak [Sun, 3 Mar 2019 09:12:14 +0000 (09:12 +0000)]
mlxsw: i2c: Modify input parameter name in initialization API
Change input parameter name "resource" to "res" in mlxsw_i2c_init() in
order to align it with mlxsw_pci_init().
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vadim Pasternak [Sun, 3 Mar 2019 09:12:12 +0000 (09:12 +0000)]
mlxsw: i2c: Fix comment misspelling
Fix comment for mlxsw_i2c_write_cmd().
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>