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15 months agoMerge tag 'acpi-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 31 Mar 2023 17:18:56 +0000 (10:18 -0700)]
Merge tag 'acpi-6.3-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a recent regression related to the handling of ACPI notifications
  that made it more likely for ACPI driver callbacks to be invoked in an
  unexpected order and NULL pointers can be dereferenced as a result or
  similar.

  The fix is to modify the global ACPI notification handler so it does
  not invoke driver callbacks at all and allow the device-level
  notification handlers to receive "system" notifications (for the
  drivers that want to receive them)"

* tag 'acpi-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: bus: Rework system-level device notification handling

15 months agoMerge tag 'riscv-for-linus-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 31 Mar 2023 17:15:17 +0000 (10:15 -0700)]
Merge tag 'riscv-for-linus-6.3-rc5' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix for FPU probing in XIP kernels

 - Always enable the alternative framework for non-XIP kernels

* tag 'riscv-for-linus-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: always select RISCV_ALTERNATIVE for non-xip kernels
  RISC-V: add non-alternative fallback for riscv_has_extension_[un]likely()

15 months agoMerge tag 'mips-fixes_6.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips...
Linus Torvalds [Fri, 31 Mar 2023 17:12:07 +0000 (10:12 -0700)]
Merge tag 'mips-fixes_6.3_1' of git://git./linux/kernel/git/mips/linux

Pull MIPS fix from Thomas Bogendoerfer:
 "Fix to avoid crash on BCM6358 platforms"

* tag 'mips-fixes_6.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mips: bmips: BCM6358: disable RAC flush for TP1

15 months agoMerge tag 'dma-mapping-6.3-2023-03-31' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Thu, 30 Mar 2023 23:09:37 +0000 (16:09 -0700)]
Merge tag 'dma-mapping-6.3-2023-03-31' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:

 - fix for swiotlb deadlock due to wrong alignment checks (GuoRui.Yu,
   Petr Tesarik)

* tag 'dma-mapping-6.3-2023-03-31' of git://git.infradead.org/users/hch/dma-mapping:
  swiotlb: fix slot alignment checks
  swiotlb: use wrap_area_index() instead of open-coding it
  swiotlb: fix the deadlock in swiotlb_do_find_slots

15 months agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Thu, 30 Mar 2023 22:52:45 +0000 (15:52 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Four small fixes, three in drivers. The core fix is yet another
  attempt to insulate us from UFS devices' weird behaviour for VPD
  pages"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: mpt3sas: Don't print sense pool info twice
  scsi: core: Improve scsi_vpd_inquiry() checks
  scsi: megaraid_sas: Fix crash after a double completion
  scsi: megaraid_sas: Fix fw_crash_buffer_show()

15 months agoMerge tag 'net-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 30 Mar 2023 21:05:21 +0000 (14:05 -0700)]
Merge tag 'net-6.3-rc5' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from CAN and WPAN.

  Still quite a few bugs from this release. This pull is a bit smaller
  because major subtrees went into the previous one. Or maybe people
  took spring break off?

  Current release - regressions:

   - phy: micrel: correct KSZ9131RNX EEE capabilities and advertisement

  Current release - new code bugs:

   - eth: wangxun: fix vector length of interrupt cause

   - vsock/loopback: consistently protect the packet queue with
     sk_buff_head.lock

   - virtio/vsock: fix header length on skb merging

   - wpan: ca8210: fix unsigned mac_len comparison with zero

  Previous releases - regressions:

   - eth: stmmac: don't reject VLANs when IFF_PROMISC is set

   - eth: smsc911x: avoid PHY being resumed when interface is not up

   - eth: mtk_eth_soc: fix tx throughput regression with direct 1G links

   - eth: bnx2x: use the right build_skb() helper after core rework

   - wwan: iosm: fix 7560 modem crash on use on unsupported channel

  Previous releases - always broken:

   - eth: sfc: don't overwrite offload features at NIC reset

   - eth: r8169: fix RTL8168H and RTL8107E rx crc error

   - can: j1939: prevent deadlock by moving j1939_sk_errqueue()

   - virt: vmxnet3: use GRO callback when UPT is enabled

   - virt: xen: don't do grant copy across page boundary

   - phy: dp83869: fix default value for tx-/rx-internal-delay

   - dsa: ksz8: fix multiple issues with ksz8_fdb_dump

   - eth: mvpp2: fix classification/RSS of VLAN and fragmented packets

   - eth: mtk_eth_soc: fix flow block refcounting logic

  Misc:

   - constify fwnode pointers in SFP handling"

* tag 'net-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits)
  net: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow
  net: ethernet: mtk_eth_soc: fix L2 offloading with DSA untag offload
  net: ethernet: mtk_eth_soc: fix flow block refcounting logic
  net: mvneta: fix potential double-frees in mvneta_txq_sw_deinit()
  net: dsa: sync unicast and multicast addresses for VLAN filters too
  net: dsa: mv88e6xxx: Enable IGMP snooping on user ports only
  xen/netback: use same error messages for same errors
  test/vsock: new skbuff appending test
  virtio/vsock: WARN_ONCE() for invalid state of socket
  virtio/vsock: fix header length on skb merging
  bnxt_en: Add missing 200G link speed reporting
  bnxt_en: Fix typo in PCI id to device description string mapping
  bnxt_en: Fix reporting of test result in ethtool selftest
  i40e: fix registers dump after run ethtool adapter self test
  bnx2x: use the right build_skb() helper
  net: ipa: compute DMA pool size properly
  net: wwan: iosm: fixes 7560 modem crash
  net: ethernet: mtk_eth_soc: fix tx throughput regression with direct 1G links
  ice: fix invalid check for empty list in ice_sched_assoc_vsi_to_agg()
  ice: add profile conflict check for AVF FDIR
  ...

15 months agoMerge tag 'for-6.3/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/devic...
Linus Torvalds [Thu, 30 Mar 2023 20:58:12 +0000 (13:58 -0700)]
Merge tag 'for-6.3/dm-fixes-2' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix two DM core bugs in the code that handles splitting "abnormal" IO
   (discards, write same and secure erase) and issuing that IO to the
   correct underlying devices (and offsets within those devices).

* tag 'for-6.3/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: fix __send_duplicate_bios() to always allow for splitting IO
  dm: fix improper splitting for abnormal bios

15 months agoMerge tag 'drm-fixes-2023-03-30' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Thu, 30 Mar 2023 20:38:27 +0000 (13:38 -0700)]
Merge tag 'drm-fixes-2023-03-30' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Daniel Vetter:
 "Two regression fixes in here, otherwise just the usual stuff:

   - i915 fixes for color mgmt, psr, lmem flush, hibernate oops, and
     more

   - amdgpu: dp mst and hibernate regression fix

   - etnaviv: revert fdinfo support (incl drm/sched revert), leak fix

   - misc ivpu fixes, nouveau backlight, drm buddy allocator 32bit
     fixes"

* tag 'drm-fixes-2023-03-30' of git://anongit.freedesktop.org/drm/drm: (27 commits)
  Revert "drm/scheduler: track GPU active time per entity"
  Revert "drm/etnaviv: export client GPU usage statistics via fdinfo"
  drm/etnaviv: fix reference leak when mmaping imported buffer
  drm/amdgpu: allow more APUs to do mode2 reset when go to S4
  drm/amd/display: Take FEC Overhead into Timeslot Calculation
  drm/amd/display: Add DSC Support for Synaptics Cascaded MST Hub
  drm: test: Fix 32-bit issue in drm_buddy_test
  drm: buddy_allocator: Fix buddy allocator init on 32-bit systems
  drm/nouveau/kms: Fix backlight registration
  drm/i915/perf: Drop wakeref on GuC RC error
  drm/i915/dpt: Treat the DPT BO as a framebuffer
  drm/i915/gem: Flush lmem contents after construction
  drm/i915/tc: Fix the ICL PHY ownership check in TC-cold state
  drm/i915: Disable DC states for all commits
  drm/i915: Workaround ICL CSC_MODE sticky arming
  drm/i915: Add a .color_post_update() hook
  drm/i915: Move CSC load back into .color_commit_arm() when PSR is enabled on skl/glk
  drm/i915: Split icl_color_commit_noarm() from skl_color_commit_noarm()
  drm/i915/pmu: Use functions common with sysfs to read actual freq
  accel/ivpu: Fix IPC buffer header status field value
  ...

15 months agodm: fix __send_duplicate_bios() to always allow for splitting IO
Mike Snitzer [Thu, 30 Mar 2023 19:09:29 +0000 (15:09 -0400)]
dm: fix __send_duplicate_bios() to always allow for splitting IO

Commit 7dd76d1feec70 ("dm: improve bio splitting and associated IO
accounting") only called setup_split_accounting() from
__send_duplicate_bios() if a single bio were being issued. But the case
where duplicate bios are issued must call it too.

Otherwise the bio won't be split and resubmitted (via recursion through
block core back to DM) to submit the later portions of a bio (which may
map to an entirely different target).

For example, when discarding an entire DM striped device with the
following DM table:
 vg-lvol0: 0 159744 striped 2 128 7:0 2048 7:1 2048
 vg-lvol0: 159744 45056 striped 2 128 7:2 2048 7:3 2048

Before (broken, discards the first striped target's devices twice):
 device-mapper: striped: target_stripe=0, bdev=7:0, start=2048 len=79872
 device-mapper: striped: target_stripe=1, bdev=7:1, start=2048 len=79872
 device-mapper: striped: target_stripe=0, bdev=7:0, start=2049 len=22528
 device-mapper: striped: target_stripe=1, bdev=7:1, start=2048 len=22528

After (works as expected):
 device-mapper: striped: target_stripe=0, bdev=7:0, start=2048 len=79872
 device-mapper: striped: target_stripe=1, bdev=7:1, start=2048 len=79872
 device-mapper: striped: target_stripe=0, bdev=7:2, start=2048 len=22528
 device-mapper: striped: target_stripe=1, bdev=7:3, start=2048 len=22528

Fixes: 7dd76d1feec70 ("dm: improve bio splitting and associated IO accounting")
Cc: stable@vger.kernel.org
Reported-by: Orange Kao <orange@aiven.io>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
15 months agodm: fix improper splitting for abnormal bios
Mike Snitzer [Thu, 30 Mar 2023 18:56:38 +0000 (14:56 -0400)]
dm: fix improper splitting for abnormal bios

"Abnormal" bios include discards, write zeroes and secure erase. By no
longer passing the calculated 'len' pointer, commit 7dd06a2548b2 ("dm:
allow dm_accept_partial_bio() for dm_io without duplicate bios") took a
senseless approach to disallowing dm_accept_partial_bio() from working
for duplicate bios processed using __send_duplicate_bios().

It inadvertently and incorrectly stopped the use of 'len' when
initializing a target's io (in alloc_tio). As such the resulting tio
could address more area of a device than it should.

For example, when discarding an entire DM striped device with the
following DM table:
 vg-lvol0: 0 159744 striped 2 128 7:0 2048 7:1 2048
 vg-lvol0: 159744 45056 striped 2 128 7:2 2048 7:3 2048

Before this fix:

 device-mapper: striped: target_stripe=0, bdev=7:0, start=2048 len=102400
 blkdiscard: attempt to access beyond end of device
 loop0: rw=2051, sector=2048, nr_sectors = 102400 limit=81920

 device-mapper: striped: target_stripe=1, bdev=7:1, start=2048 len=102400
 blkdiscard: attempt to access beyond end of device
 loop1: rw=2051, sector=2048, nr_sectors = 102400 limit=81920

After this fix;

 device-mapper: striped: target_stripe=0, bdev=7:0, start=2048 len=79872
 device-mapper: striped: target_stripe=1, bdev=7:1, start=2048 len=79872

Fixes: 7dd06a2548b2 ("dm: allow dm_accept_partial_bio() for dm_io without duplicate bios")
Cc: stable@vger.kernel.org
Reported-by: Orange Kao <orange@aiven.io>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
15 months agonet: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow
Felix Fietkau [Thu, 30 Mar 2023 12:08:40 +0000 (14:08 +0200)]
net: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow

The cache needs to be flushed to ensure that the hardware stops offloading
the flow immediately.

Fixes: 33fc42de3327 ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries")
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230330120840.52079-3-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agonet: ethernet: mtk_eth_soc: fix L2 offloading with DSA untag offload
Felix Fietkau [Thu, 30 Mar 2023 12:08:39 +0000 (14:08 +0200)]
net: ethernet: mtk_eth_soc: fix L2 offloading with DSA untag offload

Check for skb metadata in order to detect the case where the DSA header
is not present.

Fixes: 2d7605a72906 ("net: ethernet: mtk_eth_soc: enable hardware DSA untagging")
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230330120840.52079-2-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agonet: ethernet: mtk_eth_soc: fix flow block refcounting logic
Felix Fietkau [Thu, 30 Mar 2023 12:08:38 +0000 (14:08 +0200)]
net: ethernet: mtk_eth_soc: fix flow block refcounting logic

Since we call flow_block_cb_decref on FLOW_BLOCK_UNBIND, we also need to
call flow_block_cb_incref for a newly allocated cb.
Also fix the accidentally inverted refcount check on unbind.

Fixes: 502e84e2382d ("net: ethernet: mtk_eth_soc: add flow offloading support")
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230330120840.52079-1-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agonet: mvneta: fix potential double-frees in mvneta_txq_sw_deinit()
Russell King (Oracle) [Wed, 29 Mar 2023 12:11:17 +0000 (13:11 +0100)]
net: mvneta: fix potential double-frees in mvneta_txq_sw_deinit()

Reported on the Turris forum, mvneta provokes kernel warnings in the
architecture DMA mapping code when mvneta_setup_txqs() fails to
allocate memory. This happens because when mvneta_cleanup_txqs() is
called in the mvneta_stop() path, we leave pointers in the structure
that have been freed.

Then on mvneta_open(), we call mvneta_setup_txqs(), which starts
allocating memory. On memory allocation failure, mvneta_cleanup_txqs()
will walk all the queues freeing any non-NULL pointers - which includes
pointers that were previously freed in mvneta_stop().

Fix this by setting these pointers to NULL to prevent double-freeing
of the same memory.

Fixes: 2adb719d74f6 ("net: mvneta: Implement software TSO")
Link: https://forum.turris.cz/t/random-kernel-exceptions-on-hbl-tos-7-0/18865/8
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1phUe5-00EieL-7q@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agonet: dsa: sync unicast and multicast addresses for VLAN filters too
Vladimir Oltean [Wed, 29 Mar 2023 15:18:21 +0000 (18:18 +0300)]
net: dsa: sync unicast and multicast addresses for VLAN filters too

If certain conditions are met, DSA can install all necessary MAC
addresses on the CPU ports as FDB entries and disable flooding towards
the CPU (we call this RX filtering).

There is one corner case where this does not work.

ip link add br0 type bridge vlan_filtering 1 && ip link set br0 up
ip link set swp0 master br0 && ip link set swp0 up
ip link add link swp0 name swp0.100 type vlan id 100
ip link set swp0.100 up && ip addr add 192.168.100.1/24 dev swp0.100

Traffic through swp0.100 is broken, because the bridge turns on VLAN
filtering in the swp0 port (causing RX packets to be classified to the
FDB database corresponding to the VID from their 802.1Q header), and
although the 8021q module does call dev_uc_add() towards the real
device, that API is VLAN-unaware, so it only contains the MAC address,
not the VID; and DSA's current implementation of ndo_set_rx_mode() is
only for VID 0 (corresponding to FDB entries which are installed in an
FDB database which is only hit when the port is VLAN-unaware).

It's interesting to understand why the bridge does not turn on
IFF_PROMISC for its swp0 bridge port, and it may appear at first glance
that this is a regression caused by the logic in commit 2796d0c648c9
("bridge: Automatically manage port promiscuous mode."). After all,
a bridge port needs to have IFF_PROMISC by its very nature - it needs to
receive and forward frames with a MAC DA different from the bridge
ports' MAC addresses.

While that may be true, when the bridge is VLAN-aware *and* it has a
single port, there is no real reason to enable promiscuity even if that
is an automatic port, with flooding and learning (there is nowhere for
packets to go except to the BR_FDB_LOCAL entries), and this is how the
corner case appears. Adding a second automatic interface to the bridge
would make swp0 promisc as well, and would mask the corner case.

Given the dev_uc_add() / ndo_set_rx_mode() API is what it is (it doesn't
pass a VLAN ID), the only way to address that problem is to install host
FDB entries for the cartesian product of RX filtering MAC addresses and
VLAN RX filters.

Fixes: 7569459a52c9 ("net: dsa: manage flooding on the CPU ports")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230329151821.745752-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agonet: dsa: mv88e6xxx: Enable IGMP snooping on user ports only
Steffen Bätz [Wed, 29 Mar 2023 15:01:40 +0000 (12:01 -0300)]
net: dsa: mv88e6xxx: Enable IGMP snooping on user ports only

Do not set the MV88E6XXX_PORT_CTL0_IGMP_MLD_SNOOP bit on CPU or DSA ports.

This allows the host CPU port to be a regular IGMP listener by sending out
IGMP Membership Reports, which would otherwise not be forwarded by the
mv88exxx chip, but directly looped back to the CPU port itself.

Fixes: 54d792f257c6 ("net: dsa: Centralise global and port setup code into mv88e6xxx.")
Signed-off-by: Steffen Bätz <steffen@innosonix.de>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230329150140.701559-1-festevam@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agoMerge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm...
Daniel Vetter [Thu, 30 Mar 2023 18:15:06 +0000 (20:15 +0200)]
Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes

- revert gpu time fdinfo support
- reference leak fix on imported buffers

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/de8e08c2599ec0e22456ae36e9757b9ff14c2124.camel@pengutronix.de
15 months agoMerge tag 'amd-drm-fixes-6.3-2023-03-30' of https://gitlab.freedesktop.org/agd5f...
Daniel Vetter [Thu, 30 Mar 2023 17:59:06 +0000 (19:59 +0200)]
Merge tag 'amd-drm-fixes-6.3-2023-03-30' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.3-2023-03-30:

amdgpu:
- Hibernation regression fix

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230330153859.18332-1-alexander.deucher@amd.com
15 months agoMerge tag 'drm-misc-fixes-2023-03-30' of git://anongit.freedesktop.org/drm/drm-misc...
Daniel Vetter [Thu, 30 Mar 2023 16:56:52 +0000 (18:56 +0200)]
Merge tag 'drm-misc-fixes-2023-03-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Short summary of fixes pull:

 * various ivpu fixes
 * fix nouveau backlight registration
 * fix buddy allocator in 32-bit systems

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230330141006.GA22908@linux-uq9g
15 months agoMerge tag 'amd-drm-fixes-6.3-2023-03-29' of https://gitlab.freedesktop.org/agd5f...
Daniel Vetter [Thu, 30 Mar 2023 16:26:05 +0000 (18:26 +0200)]
Merge tag 'amd-drm-fixes-6.3-2023-03-29' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.3-2023-03-29:

amdgpu:
- Two DP MST fixes

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329220059.7622-1-alexander.deucher@amd.com
15 months agoMerge tag 'drm-intel-fixes-2023-03-30' of git://anongit.freedesktop.org/drm/drm-intel...
Daniel Vetter [Thu, 30 Mar 2023 16:07:12 +0000 (18:07 +0200)]
Merge tag 'drm-intel-fixes-2023-03-30' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v6.3-rc5:
- Fix PMU support by reusing functions with sysfs
- Fix a number of issues related to color, PSR and arm/noarm
- Fix state check related to ICL PHY ownership check in TC-cold state
- Flush lmem contents after construction
- Fix hibernate oops related to DPT BO
- Fix perf stream error path wakeref balance

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87355m4gtm.fsf@intel.com
15 months agoMerge tag 'sound-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Thu, 30 Mar 2023 16:04:04 +0000 (09:04 -0700)]
Merge tag 'sound-6.3-rc5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes:

   - A potential deadlock fix for USB-audio, involving some change in
     PCM core side

   - A regression fix for probes of USB-audio devices with the
     vendor-specific PCM format bits

   - Two regression fixes for the old YMFPCI driver

   - A few HD-audio quirks as usual"

* tag 'sound-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek: Add quirk for Lenovo ZhaoYang CF4620Z
  ALSA: ymfpci: Fix BUG_ON in probe function
  ALSA: ymfpci: Create card with device-managed snd_devm_card_new()
  ALSA: usb-audio: Fix regression on detection of Roland VS-100
  ALSA: hda/realtek: Fix support for Dell Precision 3260
  ALSA: usb-audio: Fix recursive locking at XRUN during syncing
  ALSA: hda/conexant: Partial revert of a quirk for Lenovo
  ALSA: hda/realtek: Add quirks for some Clevo laptops

15 months agoMerge tag 'zonefs-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal...
Linus Torvalds [Thu, 30 Mar 2023 16:00:17 +0000 (09:00 -0700)]
Merge tag 'zonefs-6.3-rc5' of git://git./linux/kernel/git/dlemoal/zonefs

Pull zonefs fixes from Damien Le Moal:

 - Make sure to always invalidate the last page of an inode straddling
   inode->i_size to avoid data inconsistencies with appended data when
   the device zone write granularity does not match the page size.

 - Do not propagate iomap -ENOBLK error to userspace and use -EBUSY
   instead.

* tag 'zonefs-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
  zonefs: Do not propagate iomap_dio_rw() ENOTBLK error to user space
  zonefs: Always invalidate last cached page on append write

15 months agoRevert "drm/scheduler: track GPU active time per entity"
Lucas Stach [Thu, 30 Mar 2023 15:35:13 +0000 (17:35 +0200)]
Revert "drm/scheduler: track GPU active time per entity"

This reverts commit df622729ddbf as it introduces a use-after-free,
which isn't easy to fix without going back to the design drawing board.

Reported-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
15 months agoRevert "drm/etnaviv: export client GPU usage statistics via fdinfo"
Lucas Stach [Thu, 30 Mar 2023 15:33:27 +0000 (17:33 +0200)]
Revert "drm/etnaviv: export client GPU usage statistics via fdinfo"

This reverts commit 97804a133c68, as it builds on top of df622729ddbf
("drm/scheduler: track GPU active time per entity") which needs to be
reverted, as it introduces a use-after-free.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
15 months agodrm/etnaviv: fix reference leak when mmaping imported buffer
Lucas Stach [Fri, 24 Feb 2023 17:21:54 +0000 (18:21 +0100)]
drm/etnaviv: fix reference leak when mmaping imported buffer

drm_gem_prime_mmap() takes a reference on the GEM object, but before that
drm_gem_mmap_obj() already takes a reference, which will be leaked as only
one reference is dropped when the mapping is closed. Drop the extra
reference when dma_buf_mmap() succeeds.

Cc: stable@vger.kernel.org
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
15 months agodrm/amdgpu: allow more APUs to do mode2 reset when go to S4
Tim Huang [Thu, 30 Mar 2023 02:33:02 +0000 (10:33 +0800)]
drm/amdgpu: allow more APUs to do mode2 reset when go to S4

Skip mode2 reset only for IMU enabled APUs when do S4.

This patch is to fix the regression issue
https://gitlab.freedesktop.org/drm/amd/-/issues/2483
It is generated by commit b589626674de ("drm/amdgpu: skip ASIC reset
for APUs when go to S4").

Fixes: b589626674de ("drm/amdgpu: skip ASIC reset for APUs when go to S4")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2483
Tested-by: Yuan Perry <Perry.Yuan@amd.com>
Signed-off-by: Tim Huang <tim.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
15 months agoxen/netback: use same error messages for same errors
Juergen Gross [Wed, 29 Mar 2023 08:02:59 +0000 (10:02 +0200)]
xen/netback: use same error messages for same errors

Issue the same error message in case an illegal page boundary crossing
has been detected in both cases where this is tested.

Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Link: https://lore.kernel.org/r/20230329080259.14823-1-jgross@suse.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agozonefs: Do not propagate iomap_dio_rw() ENOTBLK error to user space
Damien Le Moal [Thu, 30 Mar 2023 00:47:58 +0000 (09:47 +0900)]
zonefs: Do not propagate iomap_dio_rw() ENOTBLK error to user space

The call to invalidate_inode_pages2_range() in __iomap_dio_rw() may
fail, in which case -ENOTBLK is returned and this error code is
propagated back to user space trhough iomap_dio_rw() ->
zonefs_file_dio_write() return chain. This error code is fairly obscure
and may confuse the user. Avoid this and be consistent with the behavior
of zonefs_file_dio_append() for similar invalidate_inode_pages2_range()
errors by returning -EBUSY to user space when iomap_dio_rw() returns
-ENOTBLK.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Fixes: 8dcc1a9d90c1 ("fs: New zonefs file system")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Tested-by: Hans Holmberg <hans.holmberg@wdc.com>
15 months agozonefs: Always invalidate last cached page on append write
Damien Le Moal [Wed, 29 Mar 2023 04:16:01 +0000 (13:16 +0900)]
zonefs: Always invalidate last cached page on append write

When a direct append write is executed, the append offset may correspond
to the last page of a sequential file inode which might have been cached
already by buffered reads, page faults with mmap-read or non-direct
readahead. To ensure that the on-disk and cached data is consistant for
such last cached page, make sure to always invalidate it in
zonefs_file_dio_append(). If the invalidation fails, return -EBUSY to
userspace to differentiate from IO errors.

This invalidation will always be a no-op when the FS block size (device
zone write granularity) is equal to the page size (e.g. 4K).

Reported-by: Hans Holmberg <Hans.Holmberg@wdc.com>
Fixes: 02ef12a663c7 ("zonefs: use REQ_OP_ZONE_APPEND for sync DIO")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Tested-by: Hans Holmberg <hans.holmberg@wdc.com>
15 months agoMerge branch 'fix-header-length-on-skb-merging'
Paolo Abeni [Thu, 30 Mar 2023 08:47:51 +0000 (10:47 +0200)]
Merge branch 'fix-header-length-on-skb-merging'

Arseniy Krasnov says:

====================
fix header length on skb merging

this patchset fixes appending newly arrived skbuff to the last skbuff of
the socket's queue during rx path. Problem fires when we are trying to
append data to skbuff which was already processed in dequeue callback
at least once. Dequeue callback calls function 'skb_pull()' which changes
'skb->len'. In current implementation 'skb->len' is used to update length
in header of last skbuff after new data was copied to it. This is bug,
because value in header is used to calculate 'rx_bytes'/'fwd_cnt' and
thus must be constant during skbuff lifetime. Here is example, we have
two skbuffs: skb0 with length 10 and skb1 with length 4.

1) skb0 arrives, hdr->len == skb->len == 10, rx_bytes == 10
2) Read 3 bytes from skb0, skb->len == 7, hdr->len == 10, rx_bytes == 10
3) skb1 arrives, hdr->len == skb->len == 4, rx_bytes == 14
4) Append skb1 to skb0, skb0 now has skb->len == 11, hdr->len == 11.
   But value of 11 in header is invalid.
5) Read whole skb0, update rx_bytes by 11 from skb0's header.
6) At this moment rx_bytes == 3, but socket's queue is empty.

This bug starts to fire since:

commit
077706165717 ("virtio/vsock: don't use skbuff state to account credit")

In fact, it presents before, but didn't triggered due to a little bit
buggy implementation of credit calculation logic. So i'll use Fixes tag
for it.

I really forgot about this branch in rx path when implemented patch
077706165717.

This patchset contains 3 patches:
1) Fix itself.
2) Patch with WARN_ONCE() to catch such problems in future.
3) Patch with test which triggers skb appending logic. It looks like
   simple test with several 'send()' and 'recv()', but it checks, that
   skbuff appending works ok.
====================

Link: https://lore.kernel.org/r/0683cc6e-5130-484c-1105-ef2eb792d355@sberdevices.ru
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agotest/vsock: new skbuff appending test
Arseniy Krasnov [Tue, 28 Mar 2023 11:33:07 +0000 (14:33 +0300)]
test/vsock: new skbuff appending test

This adds test which checks case when data of newly received skbuff is
appended to the last skbuff in the socket's queue. It looks like simple
test with 'send()' and 'recv()', but internally it triggers logic which
appends one received skbuff to another. Test checks that this feature
works correctly.

This test is actual only for virtio transport.

Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agovirtio/vsock: WARN_ONCE() for invalid state of socket
Arseniy Krasnov [Tue, 28 Mar 2023 11:32:12 +0000 (14:32 +0300)]
virtio/vsock: WARN_ONCE() for invalid state of socket

This adds WARN_ONCE() and return from stream dequeue callback when
socket's queue is empty, but 'rx_bytes' still non-zero. This allows
the detection of potential bugs due to packet merging (see previous
patch).

Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agovirtio/vsock: fix header length on skb merging
Arseniy Krasnov [Tue, 28 Mar 2023 11:31:28 +0000 (14:31 +0300)]
virtio/vsock: fix header length on skb merging

This fixes appending newly arrived skbuff to the last skbuff of the
socket's queue. Problem fires when we are trying to append data to skbuff
which was already processed in dequeue callback at least once. Dequeue
callback calls function 'skb_pull()' which changes 'skb->len'. In current
implementation 'skb->len' is used to update length in header of the last
skbuff after new data was copied to it. This is bug, because value in
header is used to calculate 'rx_bytes'/'fwd_cnt' and thus must be not
be changed during skbuff's lifetime.

Bug starts to fire since:

commit 077706165717
("virtio/vsock: don't use skbuff state to account credit")

It presents before, but didn't triggered due to a little bit buggy
implementation of credit calculation logic. So use Fixes tag for it.

Fixes: 077706165717 ("virtio/vsock: don't use skbuff state to account credit")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoMerge branch 'bnxt_en-3-bug-fixes'
Jakub Kicinski [Thu, 30 Mar 2023 04:48:18 +0000 (21:48 -0700)]
Merge branch 'bnxt_en-3-bug-fixes'

Michael Chan says:

====================
bnxt_en: 3 Bug fixes

This series contains 3 small bug fixes covering ethtool self test, PCI
ID string typos, and some missing 200G link speed ethtool reporting logic.
====================

Link: https://lore.kernel.org/r/20230329013021.5205-1-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agobnxt_en: Add missing 200G link speed reporting
Michael Chan [Wed, 29 Mar 2023 01:30:21 +0000 (18:30 -0700)]
bnxt_en: Add missing 200G link speed reporting

bnxt_fw_to_ethtool_speed() is missing the case statement for 200G
link speed reported by firmware.  As a result, ethtool will report
unknown speed when the firmware reports 200G link speed.

Fixes: 532262ba3b84 ("bnxt_en: ethtool: support PAM4 link speeds up to 200G")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agobnxt_en: Fix typo in PCI id to device description string mapping
Kalesh AP [Wed, 29 Mar 2023 01:30:20 +0000 (18:30 -0700)]
bnxt_en: Fix typo in PCI id to device description string mapping

Fix 57502 and 57508 NPAR description string entries.  The typos
caused these devices to not match up with lspci output.

Fixes: 49c98421e6ab ("bnxt_en: Add PCI IDs for 57500 series NPAR devices.")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agobnxt_en: Fix reporting of test result in ethtool selftest
Kalesh AP [Wed, 29 Mar 2023 01:30:19 +0000 (18:30 -0700)]
bnxt_en: Fix reporting of test result in ethtool selftest

When the selftest command fails, driver is not reporting the failure
by updating the "test->flags" when bnxt_close_nic() fails.

Fixes: eb51365846bc ("bnxt_en: Add basic ethtool -t selftest support.")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agoi40e: fix registers dump after run ethtool adapter self test
Radoslaw Tyl [Tue, 28 Mar 2023 17:26:59 +0000 (10:26 -0700)]
i40e: fix registers dump after run ethtool adapter self test

Fix invalid registers dump from ethtool -d ethX after adapter self test
by ethtool -t ethY. It causes invalid data display.

The problem was caused by overwriting i40e_reg_list[].elements
which is common for ethtool self test and dump.

Fixes: 22dd9ae8afcc ("i40e: Rework register diagnostic")
Signed-off-by: Radoslaw Tyl <radoslawx.tyl@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230328172659.3906413-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net...
Jakub Kicinski [Thu, 30 Mar 2023 04:46:18 +0000 (21:46 -0700)]
Merge branch '100GbE' of git://git./linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2023-03-28 (ice)

This series contains updates to ice driver only.

Jesse fixes mismatched header documentation reported when building with
W=1.

Brett restricts setting of VSI context to only applicable fields for the
given ICE_AQ_VSI_PROP_Q_OPT_VALID bit.

Junfeng adds check when adding Flow Director filters that conflict with
existing filter rules.

Jakob Koschel adds interim variable for iterating to prevent possible
misuse after looping.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: fix invalid check for empty list in ice_sched_assoc_vsi_to_agg()
  ice: add profile conflict check for AVF FDIR
  ice: Fix ice_cfg_rdma_fltr() to only update relevant fields
  ice: fix W=1 headers mismatch
====================

Link: https://lore.kernel.org/r/20230328172035.3904953-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agoMerge tag 'ieee802154-for-net-2023-03-29' of git://git.kernel.org/pub/scm/linux/kerne...
Jakub Kicinski [Thu, 30 Mar 2023 04:41:12 +0000 (21:41 -0700)]
Merge tag 'ieee802154-for-net-2023-03-29' of git://git./linux/kernel/git/wpan/wpan

Stefan Schmidt says:

====================
ieee802154 for net 2023-03-29

Two small fixes this time.

Dongliang Mu removed an unnecessary null pointer check.

Harshit Mogalapalli fixed an int comparison unsigned against signed from a
recent other fix in the ca8210 driver.

* tag 'ieee802154-for-net-2023-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan:
  net: ieee802154: remove an unnecessary null pointer check
  ca8210: Fix unsigned mac_len comparison with zero in ca8210_skb_tx()
====================

Link: https://lore.kernel.org/r/20230329064541.2147400-1-stefan@datenfreihafen.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agobnx2x: use the right build_skb() helper
Jakub Kicinski [Wed, 29 Mar 2023 00:00:13 +0000 (17:00 -0700)]
bnx2x: use the right build_skb() helper

build_skb() no longer accepts slab buffers. Since slab use is fairly
uncommon we prefer the drivers to call a separate slab_build_skb()
function appropriately.

bnx2x uses the old semantics where size of 0 meant buffer from slab.
It sets the fp->rx_frag_size to 0 for MTUs which don't fit in a page.
It needs to call slab_build_skb().

This fixes the WARN_ONCE() of incorrect API use seen with bnx2x.

Reported-by: Thomas Voegtle <tv@lio96.de>
Link: https://lore.kernel.org/all/b8f295e4-ba57-8bfb-7d9c-9d62a498a727@lio96.de/
Fixes: ce098da1497c ("skbuff: Introduce slab_build_skb()")
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230329000013.2734957-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agonet: ipa: compute DMA pool size properly
Alex Elder [Tue, 28 Mar 2023 16:27:51 +0000 (11:27 -0500)]
net: ipa: compute DMA pool size properly

In gsi_trans_pool_init_dma(), the total size of a pool of memory
used for DMA transactions is calculated.  However the calculation is
done incorrectly.

For 4KB pages, this total size is currently always more than one
page, and as a result, the calculation produces a positive (though
incorrect) total size.  The code still works in this case; we just
end up with fewer DMA pool entries than we intended.

Bjorn Andersson tested booting a kernel with 16KB pages, and hit a
null pointer derereference in sg_alloc_append_table_from_pages(),
descending from gsi_trans_pool_init_dma().  The cause of this was
that a 16KB total size was going to be allocated, and with 16KB
pages the order of that allocation is 0.  The total_size calculation
yielded 0, which eventually led to the crash.

Correcting the total_size calculation fixes the problem.

Reported-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Tested-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Fixes: 9dd441e4ed57 ("soc: qcom: ipa: GSI transactions")
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230328162751.2861791-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agodrm/amd/display: Take FEC Overhead into Timeslot Calculation
Fangzhi Zuo [Wed, 1 Mar 2023 02:34:58 +0000 (21:34 -0500)]
drm/amd/display: Take FEC Overhead into Timeslot Calculation

8b/10b encoding needs to add 3% fec overhead into the pbn.
In the Synapcis Cascaded MST hub, the first stage MST branch device
needs the information to determine the timeslot count for the
second stage MST branch device. Missing this overhead will leads to
insufficient timeslot allocation.

Cc: stable@vger.kernel.org
Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
15 months agodrm/amd/display: Add DSC Support for Synaptics Cascaded MST Hub
Fangzhi Zuo [Fri, 24 Feb 2023 18:45:21 +0000 (13:45 -0500)]
drm/amd/display: Add DSC Support for Synaptics Cascaded MST Hub

Traditional synaptics hub has one MST branch device without virtual dpcd.
Synaptics cascaded hub has two chained MST branch devices. DSC decoding
is performed via root MST branch device, instead of the second MST branch
device.

Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
15 months agoMerge patch series "RISC-V: Fixes for riscv_has_extension[un]likely()'s alternative...
Palmer Dabbelt [Wed, 29 Mar 2023 18:48:41 +0000 (11:48 -0700)]
Merge patch series "RISC-V: Fixes for riscv_has_extension[un]likely()'s alternative dependency"

Conor Dooley <conor.dooley@microchip.com> says:

Here's my attempt at fixing both the use of an FPU on XIP kernels and
the issue that Jason ran into where CONFIG_FPU, which needs the
alternatives frame work for has_fpu() checks, could be enabled without
the alternatives actually being present.

For the former, a "slow" fallback that does not use alternatives is
added to riscv_has_extension_[un]likely() that can be used with XIP.
Obviously, we want to make use of Jisheng's alternatives based approach
where possible, so any users of riscv_has_extension_[un]likely() will
want to make sure that they select RISCV_ALTERNATIVE.
If they don't however, they'll hit the fallback path which (should,
sparing a silly mistake from me!) behave in the same way, thus
succeeding silently. Sounds like a

To prevent "depends on !XIP_KERNEL; select RISCV_ALTERNATIVE" spreading
like the plague through the various places that want to check for the
presence of extensions, and sidestep the potential silent "success"
mentioned above, all users RISCV_ALTERNATIVE are converted from selects
to dependencies, with the option being selected for all !XIP_KERNEL
builds.

I know that the VDSO was a key place that Jisheng wanted to use the new
helper rather than static branches, and I think the fallback path
should not cause issues there.

See the thread at [1] for the prior discussion.

1 - https://lore.kernel.org/linux-riscv/20230128172856.3814-1-jszhang@kernel.org/T/#m21390d570997145d31dd8bb95002fd61f99c6573

[Palmer: merging in the fixes as a branch as there's some features that
depend on it.]

* b4-shazam-merge:
  RISC-V: always select RISCV_ALTERNATIVE for non-xip kernels
  RISC-V: add non-alternative fallback for riscv_has_extension_[un]likely()

Link: https://lore.kernel.org/r/20230324100538.3514663-1-conor.dooley@microchip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
15 months agoRISC-V: always select RISCV_ALTERNATIVE for non-xip kernels
Conor Dooley [Fri, 24 Mar 2023 10:05:39 +0000 (10:05 +0000)]
RISC-V: always select RISCV_ALTERNATIVE for non-xip kernels

When moving switch_to's has_fpu() over to using
riscv_has_extension_likely() rather than static branches, the FPU code
gained a dependency on the alternatives framework.
That dependency has now been removed, as riscv_has_extension_ikely() now
contains a fallback path, using __riscv_isa_extension_available(), but
if CONFIG_RISCV_ALTERNATIVE isn't selected when CONFIG_FPU is, has_fpu()
checks will not benefit from the "fast path" that the alternatives
framework provides.

We want to ensure that alternatives are available whenever
riscv_has_extension_[un]likely() is used, rather than silently falling
back to the slow path, but rather than rely on selecting
RISCV_ALTERNATIVE in the myriad of locations that may use
riscv_has_extension_[un]likely(), select it (almost) always instead by
adding it to the main RISCV config entry.
xip kernels cannot make use of the alternatives framework, so it is not
enabled for those configurations, although this is the status quo.

All current sites that select RISCV_ALTERNATIVE are converted to
dependencies on the option instead. The explicit dependencies on
!XIP_KERNEL can be dropped, as RISCV_ALTERNATIVE is not user selectable.

Fixes: 702e64550b12 ("riscv: fpu: switch has_fpu() to riscv_has_extension_likely()")
Link: https://lore.kernel.org/all/ZBruFRwt3rUVngPu@zx2c4.com/
Reported-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Link: https://lore.kernel.org/r/20230324100538.3514663-3-conor.dooley@microchip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
15 months agoRISC-V: add non-alternative fallback for riscv_has_extension_[un]likely()
Conor Dooley [Fri, 24 Mar 2023 10:05:38 +0000 (10:05 +0000)]
RISC-V: add non-alternative fallback for riscv_has_extension_[un]likely()

The has_fpu() check, which in turn calls riscv_has_extension_likely(),
relies on alternatives to figure out whether the system has an FPU.
As a result, it will malfunction on XIP kernels, as they do not support
the alternatives mechanism.

When alternatives support is not present, fall back to using
__riscv_isa_extension_available() in riscv_has_extension_[un]likely()
instead stead, which handily takes the same argument, so that kernels
that do not support alternatives can accurately report the presence of
FPU support.

Fixes: 702e64550b12 ("riscv: fpu: switch has_fpu() to riscv_has_extension_likely()")
Link: https://lore.kernel.org/all/ad445951-3d13-4644-94d9-e0989cda39c3@spud/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Link: https://lore.kernel.org/r/20230324100538.3514663-2-conor.dooley@microchip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
15 months agoMerge tag 'xtensa-20230327' of https://github.com/jcmvbkbc/linux-xtensa
Linus Torvalds [Wed, 29 Mar 2023 17:24:07 +0000 (10:24 -0700)]
Merge tag 'xtensa-20230327' of https://github.com/jcmvbkbc/linux-xtensa

Pull xtensa fixes from Max Filippov:

 - fix KASAN report in show_stack

 - drop linux-xtensa mailing list from the MAINTAINERS file

* tag 'xtensa-20230327' of https://github.com/jcmvbkbc/linux-xtensa:
  MAINTAINERS: xtensa: drop linux-xtensa@linux-xtensa.org mailing list
  xtensa: fix KASAN report for show_stack

15 months agoMerge tag 'f2fs-fix-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk...
Linus Torvalds [Wed, 29 Mar 2023 17:13:37 +0000 (10:13 -0700)]
Merge tag 'f2fs-fix-6.3-rc5' of git://git./linux/kernel/git/jaegeuk/f2fs

Pull f2fs fix from Jaegeuk Kim:
 "This fixes a tracepoint field size in f2fs in preparation for stricter
  rules for tracing fields"

* tag 'f2fs-fix-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: Fix f2fs_truncate_partial_nodes ftrace event

15 months agodrm: test: Fix 32-bit issue in drm_buddy_test
David Gow [Wed, 29 Mar 2023 06:55:34 +0000 (14:55 +0800)]
drm: test: Fix 32-bit issue in drm_buddy_test

The drm_buddy_test KUnit tests verify that returned blocks have sizes
which are powers of two using is_power_of_2(). However, is_power_of_2()
operations on a 'long', but the block size is a u64. So on systems where
long is 32-bit, this can sometimes fail even on correctly sized blocks.

This only reproduces randomly, as the parameters passed to the buddy
allocator in this test are random. The seed 0xb2e06022 reproduced it
fine here.

For now, just hardcode an is_power_of_2() implementation using
x & (x - 1).

Signed-off-by: David Gow <davidgow@google.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Arunpravin Paneer Selvam <arunpravin.paneerselvam@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329065532.2122295-2-davidgow@google.com
Signed-off-by: Christian König <christian.koenig@amd.com>
15 months agodrm: buddy_allocator: Fix buddy allocator init on 32-bit systems
David Gow [Wed, 29 Mar 2023 06:55:32 +0000 (14:55 +0800)]
drm: buddy_allocator: Fix buddy allocator init on 32-bit systems

The drm buddy allocator tests were broken on 32-bit systems, as
rounddown_pow_of_two() takes a long, and the buddy allocator handles
64-bit sizes even on 32-bit systems.

This can be reproduced with the drm_buddy_allocator KUnit tests on i386:
./tools/testing/kunit/kunit.py run --arch i386 \
--kunitconfig ./drivers/gpu/drm/tests drm_buddy

(It results in kernel BUG_ON() when too many blocks are created, due to
the block size being too small.)

This was independently uncovered (and fixed) by Luís Mendes, whose patch
added a new u64 variant of rounddown_pow_of_two(). This version instead
recalculates the size based on the order.

Reported-by: Luís Mendes <luis.p.mendes@gmail.com>
Link: https://lore.kernel.org/lkml/CAEzXK1oghXAB_KpKpm=-CviDQbNaH0qfgYTSSjZgvvyj4U78AA@mail.gmail.com/T/
Signed-off-by: David Gow <davidgow@google.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Arunpravin Paneer Selvam <arunpravin.paneerselvam@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329065532.2122295-1-davidgow@google.com
Signed-off-by: Christian König <christian.koenig@amd.com>
15 months agoALSA: hda/realtek: Add quirk for Lenovo ZhaoYang CF4620Z
huangwenhui [Tue, 28 Mar 2023 07:46:44 +0000 (15:46 +0800)]
ALSA: hda/realtek: Add quirk for Lenovo ZhaoYang CF4620Z

Fix headset microphone detection on Lenovo ZhaoYang CF4620Z.

[ adjusted to be applicable to the latest tree -- tiwai ]

Signed-off-by: huangwenhui <huangwenhuia@uniontech.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230328074644.30142-1-huangwenhuia@uniontech.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 months agodrm/nouveau/kms: Fix backlight registration
Hans de Goede [Sun, 26 Mar 2023 20:54:33 +0000 (22:54 +0200)]
drm/nouveau/kms: Fix backlight registration

The nouveau code used to call drm_fb_helper_initial_config() from
nouveau_fbcon_init() before calling drm_dev_register(). This would
probe all connectors so that drm_connector->status could be used during
backlight registration which runs from nouveau_connector_late_register().

After commit 4a16dd9d18a0 ("drm/nouveau/kms: switch to drm fbdev helpers")
the fbdev emulation code, which now is a drm-client, can only run after
drm_dev_register(). So during backlight registration the connectors are
not probed yet and the drm_connector->status == connected check in
nv50_backlight_init() would now always fail.

Replace the drm_connector->status == connected check with
a drm_helper_probe_detect() == connected check to fix nv_backlight
no longer getting registered because of this.

Fixes: 4a16dd9d18a0 ("drm/nouveau/kms: switch to drm fbdev helpers")
Link: https://gitlab.freedesktop.org/drm/nouveau/-/issues/202
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2181941
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230326205433.36485-1-hdegoede@redhat.com
15 months agonet: wwan: iosm: fixes 7560 modem crash
M Chetan Kumar [Tue, 28 Mar 2023 06:28:44 +0000 (11:58 +0530)]
net: wwan: iosm: fixes 7560 modem crash

ModemManger/Apps probing the wwan0xmmrpc0 port for 7560 Modem results in
modem crash.

7560 Modem FW uses the MBIM interface for control command communication
whereas 7360 uses Intel RPC interface so disable wwan0xmmrpc0 port for
7560.

Fixes: d08b0f8f46e4 ("net: wwan: iosm: add rpc interface for xmm modems")
Reported-and-tested-by: Martin <mwolf@adiumentum.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217200
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: Shane Parslow <shaneparslow808@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agoALSA: ymfpci: Fix BUG_ON in probe function
Tasos Sahanidis [Wed, 29 Mar 2023 03:28:08 +0000 (06:28 +0300)]
ALSA: ymfpci: Fix BUG_ON in probe function

The snd_dma_buffer.bytes field now contains the aligned size, which this
snd_BUG_ON() did not account for, resulting in the following:

[    9.625915] ------------[ cut here ]------------
[    9.633440] WARNING: CPU: 0 PID: 126 at sound/pci/ymfpci/ymfpci_main.c:2168 snd_ymfpci_create+0x681/0x698 [snd_ymfpci]
[    9.648926] Modules linked in: snd_ymfpci(+) snd_intel_dspcfg kvm(+) snd_intel_sdw_acpi snd_ac97_codec snd_mpu401_uart snd_opl3_lib irqbypass snd_hda_codec gameport snd_rawmidi crct10dif_pclmul crc32_pclmul cfg80211 snd_hda_core polyval_clmulni polyval_generic gf128mul snd_seq_device ghash_clmulni_intel snd_hwdep ac97_bus sha512_ssse3 rfkill snd_pcm aesni_intel tg3 snd_timer crypto_simd snd mxm_wmi libphy cryptd k10temp fam15h_power pcspkr soundcore sp5100_tco wmi acpi_cpufreq mac_hid dm_multipath sg loop fuse dm_mod bpf_preload ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 sr_mod cdrom ata_generic pata_acpi firewire_ohci crc32c_intel firewire_core xhci_pci crc_itu_t pata_via xhci_pci_renesas floppy
[    9.711849] CPU: 0 PID: 126 Comm: kworker/0:2 Not tainted 6.1.21-1-lts #1 08d2e5ece03136efa7c6aeea9a9c40916b1bd8da
[    9.722200] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./990FX Extreme4, BIOS P2.70 06/05/2014
[    9.732204] Workqueue: events work_for_cpu_fn
[    9.736580] RIP: 0010:snd_ymfpci_create+0x681/0x698 [snd_ymfpci]
[    9.742594] Code: 8c c0 4c 89 e2 48 89 df 48 c7 c6 92 c6 8c c0 e8 15 d0 e9 ff 48 83 c4 08 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d3 7a 33 e3 <0f> 0b e9 cb fd ff ff 41 bd fb ff ff ff eb db 41 bd f4 ff ff ff eb
[    9.761358] RSP: 0018:ffffab64804e7da0 EFLAGS: 00010287
[    9.766594] RAX: ffff8fa2df06c400 RBX: ffff8fa3073a8000 RCX: ffff8fa303fbc4a8
[    9.773734] RDX: ffff8fa2df06d000 RSI: 0000000000000010 RDI: 0000000000000020
[    9.780876] RBP: ffff8fa300b5d0d0 R08: ffff8fa3073a8e50 R09: 00000000df06bf00
[    9.788018] R10: ffff8fa2df06bf00 R11: 00000000df068200 R12: ffff8fa3073a8918
[    9.795159] R13: 0000000000000000 R14: 0000000000000080 R15: ffff8fa2df068200
[    9.802317] FS:  0000000000000000(0000) GS:ffff8fa9fec00000(0000) knlGS:0000000000000000
[    9.810414] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.816158] CR2: 000055febaf66500 CR3: 0000000101a2e000 CR4: 00000000000406f0
[    9.823301] Call Trace:
[    9.825747]  <TASK>
[    9.827889]  snd_card_ymfpci_probe+0x194/0x950 [snd_ymfpci b78a5fe64b5663a6390a909c67808567e3e73615]
[    9.837030]  ? finish_task_switch.isra.0+0x90/0x2d0
[    9.841918]  local_pci_probe+0x45/0x80
[    9.845680]  work_for_cpu_fn+0x1a/0x30
[    9.849431]  process_one_work+0x1c7/0x380
[    9.853464]  worker_thread+0x1af/0x390
[    9.857225]  ? rescuer_thread+0x3b0/0x3b0
[    9.861254]  kthread+0xde/0x110
[    9.864414]  ? kthread_complete_and_exit+0x20/0x20
[    9.869210]  ret_from_fork+0x22/0x30
[    9.872792]  </TASK>
[    9.874985] ---[ end trace 0000000000000000 ]---

Fixes: 5c1733e33c88 ("ALSA: memalloc: Align buffer allocations in page size")
Signed-off-by: Tasos Sahanidis <tasos@tasossah.com>
Link: https://lore.kernel.org/r/20230329032808.170403-1-tasos@tasossah.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 months agoALSA: ymfpci: Create card with device-managed snd_devm_card_new()
Tasos Sahanidis [Wed, 29 Mar 2023 03:24:22 +0000 (06:24 +0300)]
ALSA: ymfpci: Create card with device-managed snd_devm_card_new()

snd_card_ymfpci_remove() was removed in commit c6e6bb5eab74 ("ALSA:
ymfpci: Allocate resources with device-managed APIs"), but the call to
snd_card_new() was not replaced with snd_devm_card_new().

Since there was no longer a call to snd_card_free, unloading the module
would eventually result in Oops:

[697561.532887] BUG: unable to handle page fault for address: ffffffffc0924480
[697561.532893] #PF: supervisor read access in kernel mode
[697561.532896] #PF: error_code(0x0000) - not-present page
[697561.532899] PGD ae1e15067 P4D ae1e15067 PUD ae1e17067 PMD 11a8f5067 PTE 0
[697561.532905] Oops: 0000 [#1] PREEMPT SMP NOPTI
[697561.532909] CPU: 21 PID: 5080 Comm: wireplumber Tainted: G        W  OE      6.2.7 #1
[697561.532914] Hardware name: System manufacturer System Product Name/TUF GAMING X570-PLUS, BIOS 4408 10/28/2022
[697561.532916] RIP: 0010:try_module_get.part.0+0x1a/0xe0
[697561.532924] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 49 89 fc bf 01 00 00 00 e8 56 3c f8 ff <41> 83 3c 24 02 0f 84 96 00 00 00 41 8b 84 24 30 03 00 00 85 c0 0f
[697561.532927] RSP: 0018:ffffbe9b858c3bd8 EFLAGS: 00010246
[697561.532930] RAX: ffff9815d14f1900 RBX: ffff9815c14e6000 RCX: 0000000000000000
[697561.532933] RDX: 0000000000000000 RSI: ffffffffc055092c RDI: ffffffffb3778c1a
[697561.532935] RBP: ffffbe9b858c3be8 R08: 0000000000000040 R09: ffff981a1a741380
[697561.532937] R10: ffffbe9b858c3c80 R11: 00000009d56533a6 R12: ffffffffc0924480
[697561.532939] R13: ffff9823439d8500 R14: 0000000000000025 R15: ffff9815cd109f80
[697561.532942] FS:  00007f13084f1f80(0000) GS:ffff9824aef40000(0000) knlGS:0000000000000000
[697561.532945] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[697561.532947] CR2: ffffffffc0924480 CR3: 0000000145344000 CR4: 0000000000350ee0
[697561.532949] Call Trace:
[697561.532951]  <TASK>
[697561.532955]  try_module_get+0x13/0x30
[697561.532960]  snd_ctl_open+0x61/0x1c0 [snd]
[697561.532976]  snd_open+0xb4/0x1e0 [snd]
[697561.532989]  chrdev_open+0xc7/0x240
[697561.532995]  ? fsnotify_perm.part.0+0x6e/0x160
[697561.533000]  ? __pfx_chrdev_open+0x10/0x10
[697561.533005]  do_dentry_open+0x169/0x440
[697561.533009]  vfs_open+0x2d/0x40
[697561.533012]  path_openat+0xa9d/0x10d0
[697561.533017]  ? debug_smp_processor_id+0x17/0x20
[697561.533022]  ? trigger_load_balance+0x65/0x370
[697561.533026]  do_filp_open+0xb2/0x160
[697561.533032]  ? _raw_spin_unlock+0x19/0x40
[697561.533036]  ? alloc_fd+0xa9/0x190
[697561.533040]  do_sys_openat2+0x9f/0x160
[697561.533044]  __x64_sys_openat+0x55/0x90
[697561.533048]  do_syscall_64+0x3b/0x90
[697561.533052]  entry_SYSCALL_64_after_hwframe+0x72/0xdc
[697561.533056] RIP: 0033:0x7f1308a40db4
[697561.533059] Code: 24 20 eb 8f 66 90 44 89 54 24 0c e8 46 68 f8 ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 32 44 89 c7 89 44 24 0c e8 78 68 f8 ff 8b 44
[697561.533062] RSP: 002b:00007ffcce664450 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
[697561.533066] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1308a40db4
[697561.533068] RDX: 0000000000080000 RSI: 00007ffcce664690 RDI: 00000000ffffff9c
[697561.533070] RBP: 00007ffcce664690 R08: 0000000000000000 R09: 0000000000000012
[697561.533072] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080000
[697561.533074] R13: 00007f13054b069b R14: 0000565209f83200 R15: 0000000000000000
[697561.533078]  </TASK>

Fixes: c6e6bb5eab74 ("ALSA: ymfpci: Allocate resources with device-managed APIs")
Signed-off-by: Tasos Sahanidis <tasos@tasossah.com>
Link: https://lore.kernel.org/r/20230329032422.170024-1-tasos@tasossah.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 months agonet: ethernet: mtk_eth_soc: fix tx throughput regression with direct 1G links
Felix Fietkau [Fri, 24 Mar 2023 14:04:04 +0000 (15:04 +0100)]
net: ethernet: mtk_eth_soc: fix tx throughput regression with direct 1G links

Using the QDMA tx scheduler to throttle tx to line speed works fine for
switch ports, but apparently caused a regression on non-switch ports.

Based on a number of tests, it seems that this throttling can be safely
dropped without re-introducing the issues on switch ports that the
tx scheduling changes resolved.

Link: https://lore.kernel.org/netdev/trinity-92c3826f-c2c8-40af-8339-bc6d0d3ffea4-1678213958520@3c-app-gmx-bs16/
Fixes: f63959c7eec3 ("net: ethernet: mtk_eth_soc: implement multi-queue support for per-port queues")
Reported-by: Frank Wunderlich <frank-w@public-files.de>
Reported-by: Daniel Golle <daniel@makrotopia.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230324140404.95745-1-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agoMerge tag 'urgent-rcu.2023.03.28a' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 28 Mar 2023 20:28:52 +0000 (13:28 -0700)]
Merge tag 'urgent-rcu.2023.03.28a' of git://git./linux/kernel/git/paulmck/linux-rcu

Pull RCU fix from Paul McKenney:
 "This brings the rcu_torture_read event trace into line with the new
  trace tools by replacing this event trace's __field() with the
  corresponding __array().

  Without this, the new trace tools will fail when presented wtih an
  rcu_torture_read event trace, which is a regression from the viewpoint
  of trace tools users"

Link: https://lore.kernel.org/all/20230320133650.5388a05e@gandalf.local.home/
* tag 'urgent-rcu.2023.03.28a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  rcu: Fix rcu_torture_read ftrace event

15 months agoMerge tag 'linux-kselftest-fixes-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Tue, 28 Mar 2023 20:14:47 +0000 (13:14 -0700)]
Merge tag 'linux-kselftest-fixes-6.3-rc5' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fixes from Shuah Khan:
 "One single fix for sigaltstack test -Wuninitialized warning found when
  building with clang"

* tag 'linux-kselftest-fixes-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: sigaltstack: fix -Wuninitialized

15 months agoMerge tag 's390-6.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Tue, 28 Mar 2023 17:43:04 +0000 (10:43 -0700)]
Merge tag 's390-6.3-4' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:

 - Fix an error handling issue with PTRACE_GET_LAST_BREAK request so
   that -EFAULT is returned if put_user() fails, instead of ignoring it

 - Fix a build race for the modules_prepare target when
   CONFIG_EXPOLINE_EXTERN is enabled by reintroducing the dependence on
   scripts

 - Fix a memory leak in vfio_ap device driver

 - Add missing earlyclobber annotations to __clear_user() inline
   assembly to prevent incorrect register allocation

* tag 's390-6.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/ptrace: fix PTRACE_GET_LAST_BREAK error handling
  s390: reintroduce expoline dependence to scripts
  s390/vfio-ap: fix memory leak in vfio_ap device driver
  s390/uaccess: add missing earlyclobber annotations to __clear_user()

15 months agoice: fix invalid check for empty list in ice_sched_assoc_vsi_to_agg()
Jakob Koschel [Mon, 20 Mar 2023 12:48:15 +0000 (13:48 +0100)]
ice: fix invalid check for empty list in ice_sched_assoc_vsi_to_agg()

The code implicitly assumes that the list iterator finds a correct
handle. If 'vsi_handle' is not found the 'old_agg_vsi_info' was
pointing to an bogus memory location. For safety a separate list
iterator variable should be used to make the != NULL check on
'old_agg_vsi_info' correct under any circumstances.

Additionally Linus proposed to avoid any use of the list iterator
variable after the loop, in the attempt to move the list iterator
variable declaration into the macro to avoid any potential misuse after
the loop. Using it in a pointer comparison after the loop is undefined
behavior and should be omitted if possible [1].

Fixes: 37c592062b16 ("ice: remove the VSI info from previous agg")
Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/
Signed-off-by: Jakob Koschel <jkl820.git@gmail.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
15 months agoice: add profile conflict check for AVF FDIR
Junfeng Guo [Tue, 14 Mar 2023 02:03:15 +0000 (10:03 +0800)]
ice: add profile conflict check for AVF FDIR

Add profile conflict check while adding some FDIR rules to avoid
unexpected flow behavior, rules may have conflict including:
        IPv4 <---> {IPv4_UDP, IPv4_TCP, IPv4_SCTP}
        IPv6 <---> {IPv6_UDP, IPv6_TCP, IPv6_SCTP}

For example, when we create an FDIR rule for IPv4, this rule will work
on packets including IPv4, IPv4_UDP, IPv4_TCP and IPv4_SCTP. But if we
then create an FDIR rule for IPv4_UDP and then destroy it, the first
FDIR rule for IPv4 cannot work on pkt IPv4_UDP then.

To prevent this unexpected behavior, we add restriction in software
when creating FDIR rules by adding necessary profile conflict check.

Fixes: 1f7ea1cd6a37 ("ice: Enable FDIR Configure for AVF")
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
15 months agoice: Fix ice_cfg_rdma_fltr() to only update relevant fields
Brett Creeley [Mon, 13 Mar 2023 20:36:08 +0000 (13:36 -0700)]
ice: Fix ice_cfg_rdma_fltr() to only update relevant fields

The current implementation causes ice_vsi_update() to update all VSI
fields based on the cached VSI context. This also assumes that the
ICE_AQ_VSI_PROP_Q_OPT_VALID bit is set. This can cause problems if the
VSI context is not correctly synced by the driver. Fix this by only
updating the fields that correspond to ICE_AQ_VSI_PROP_Q_OPT_VALID.
Also, make sure to save the updated result in the cached VSI context
on success.

Fixes: 348048e724a0 ("ice: Implement iidc operations")
Co-developed-by: Robert Malz <robertx.malz@intel.com>
Signed-off-by: Robert Malz <robertx.malz@intel.com>
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com>
Tested-by: Jakub Andrysiak <jakub.andrysiak@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
15 months agoice: fix W=1 headers mismatch
Jesse Brandeburg [Mon, 13 Mar 2023 20:36:07 +0000 (13:36 -0700)]
ice: fix W=1 headers mismatch

make modules W=1 returns:
.../ice/ice_txrx_lib.c:448: warning: Function parameter or member 'first_idx' not described in 'ice_finalize_xdp_rx'
.../ice/ice_txrx.c:948: warning: Function parameter or member 'ntc' not described in 'ice_get_rx_buf'
.../ice/ice_txrx.c:1038: warning: Excess function parameter 'rx_buf' description in 'ice_construct_skb'

Fix these warnings by adding and deleting the deviant arguments.

Fixes: 2fba7dc5157b ("ice: Add support for XDP multi-buffer on Rx side")
Fixes: d7956d81f150 ("ice: Pull out next_to_clean bump out of ice_put_rx_buf()")
CC: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
15 months agoMerge branch 'xen-netback-fix-issue-introduced-recently'
Paolo Abeni [Tue, 28 Mar 2023 12:16:42 +0000 (14:16 +0200)]
Merge branch 'xen-netback-fix-issue-introduced-recently'

Juergen Gross says:

====================
xen/netback: fix issue introduced recently

The fix for XSA-423 introduced a bug which resulted in loss of network
connection in some configurations.

The first patch is fixing the issue, while the second one is removing
a test which isn't needed.
====================

Link: https://lore.kernel.org/r/20230327083646.18690-1-jgross@suse.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoxen/netback: remove not needed test in xenvif_tx_build_gops()
Juergen Gross [Mon, 27 Mar 2023 08:36:46 +0000 (10:36 +0200)]
xen/netback: remove not needed test in xenvif_tx_build_gops()

The tests for the number of grant mapping or copy operations reaching
the array size of the operations buffer at the end of the main loop in
xenvif_tx_build_gops() isn't needed.

The loop can handle at maximum MAX_PENDING_REQS transfer requests, as
XEN_RING_NR_UNCONSUMED_REQUESTS() is taking unsent responses into
consideration, too.

Remove the tests.

Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoxen/netback: don't do grant copy across page boundary
Juergen Gross [Mon, 27 Mar 2023 08:36:45 +0000 (10:36 +0200)]
xen/netback: don't do grant copy across page boundary

Fix xenvif_get_requests() not to do grant copy operations across local
page boundaries. This requires to double the maximum number of copy
operations per queue, as each copy could now be split into 2.

Make sure that struct xenvif_tx_cb doesn't grow too large.

Cc: stable@vger.kernel.org
Fixes: ad7f402ae4f4 ("xen/netback: Ensure protocol headers don't fall in the non-linear area")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agosmsc911x: avoid PHY being resumed when interface is not up
Wolfram Sang [Mon, 27 Mar 2023 08:31:38 +0000 (10:31 +0200)]
smsc911x: avoid PHY being resumed when interface is not up

SMSC911x doesn't need mdiobus suspend/resume, that's why it sets
'mac_managed_pm'. However, setting it needs to be moved from init to
probe, so mdiobus PM functions will really never be called (e.g. when
the interface is not up yet during suspend/resume).

Fixes: 3ce9f2bef755 ("net: smsc911x: Stop and start PHY during suspend and resume")
Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230327083138.6044-1-wsa+renesas@sang-engineering.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoMerge branch 'net-mvpp2-rss-fixes'
Paolo Abeni [Tue, 28 Mar 2023 09:34:11 +0000 (11:34 +0200)]
Merge branch 'net-mvpp2-rss-fixes'

Sven Auhagen says:

====================
net: mvpp2: rss fixes

This patch series fixes up some rss problems
in the mvpp2 driver.

The classifier is missing some fragmentation flags,
the parser has the QinQ headers switched and
the PPPoE Layer 4 detecion is not working
correctly.

This is leading to no or bad rss for the default
settings.
====================

Link: https://lore.kernel.org/r/20230325163903.ofefgus43x66as7i@Svens-MacBookPro.local
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonet: mvpp2: parser fix PPPoE
Sven Auhagen [Sat, 25 Mar 2023 16:41:05 +0000 (17:41 +0100)]
net: mvpp2: parser fix PPPoE

In PPPoE add all IPv4 header option length to the parser
and adjust the L3 and L4 offset accordingly.
Currently the L4 match does not work with PPPoE and
all packets are matched as L3 IP4 OPT.

Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonet: mvpp2: parser fix QinQ
Sven Auhagen [Sat, 25 Mar 2023 16:40:53 +0000 (17:40 +0100)]
net: mvpp2: parser fix QinQ

The mvpp2 parser entry for QinQ has the inner and outer VLAN
in the wrong order.
Fix the problem by swapping them.

Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Reviewed-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agonet: mvpp2: classifier flow fix fragmentation flags
Sven Auhagen [Sat, 25 Mar 2023 16:40:29 +0000 (17:40 +0100)]
net: mvpp2: classifier flow fix fragmentation flags

Add missing IP Fragmentation Flag.

Fixes: f9358e12a0af ("net: mvpp2: split ingress traffic into multiple flows")
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Reviewed-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
15 months agoMerge tag 'linux-can-fixes-for-6.3-20230327' of git://git.kernel.org/pub/scm/linux...
Jakub Kicinski [Tue, 28 Mar 2023 02:47:42 +0000 (19:47 -0700)]
Merge tag 'linux-can-fixes-for-6.3-20230327' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2023-03-27

Oleksij Rempel and Hillf Danton contribute a patch for the CAN J1939
protocol that prevents a potential deadlock in j1939_sk_errqueue().

Ivan Orlov fixes an uninit-value in the CAN BCM protocol in the
bcm_tx_setup() function.

* tag 'linux-can-fixes-for-6.3-20230327' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
  can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
  can: j1939: prevent deadlock by moving j1939_sk_errqueue()
====================

Link: https://lore.kernel.org/r/20230327124807.1157134-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agoMAINTAINERS: remove the linux-nfc@lists.01.org list
Lukas Bulwahn [Fri, 24 Mar 2023 08:16:13 +0000 (09:16 +0100)]
MAINTAINERS: remove the linux-nfc@lists.01.org list

Some MAINTAINERS sections mention to mail patches to the list
linux-nfc@lists.01.org. Probably due to changes on Intel's 01.org website
and servers, the list server lists.01.org/ml01.01.org is simply gone.

Considering emails recorded on lore.kernel.org, only a handful of emails
where sent to the linux-nfc@lists.01.org list, and they are usually also
sent to the netdev mailing list as well, where they are then picked up.
So, there is no big benefit in restoring the linux-nfc elsewhere.

Remove all occurrences of the linux-nfc@lists.01.org list in MAINTAINERS.

Suggested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/all/CAKXUXMzggxQ43DUZZRkPMGdo5WkzgA=i14ySJUFw4kZfE5ZaZA@mail.gmail.com/
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230324081613.32000-1-lukas.bulwahn@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agonet: fman: Add myself as a reviewer
Sean Anderson [Thu, 23 Mar 2023 14:59:57 +0000 (10:59 -0400)]
net: fman: Add myself as a reviewer

I've read through or reworked a good portion of this driver. Add myself
as a reviewer.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Link: https://lore.kernel.org/r/20230323145957.2999211-1-sean.anderson@seco.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 months agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Mon, 27 Mar 2023 19:22:45 +0000 (12:22 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "RISC-V:

   - Fix VM hang in case of timer delta being zero

 ARM:

   - MMU fixes:

      - Read the MMU notifier seq before dropping the mmap lock to guard
        against reading a potentially stale VMA

      - Disable interrupts when walking user page tables to protect
        against the page table being freed

      - Read the MTE permissions for the VMA within the mmap lock
        critical section, avoiding the use of a potentally stale VMA
        pointer

   - vPMU fixes:

      - Return the sum of the current perf event value and PMC snapshot
        for reads from userspace

      - Don't save the value of guest writes to PMCR_EL0.{C,P}, which
        could otherwise lead to userspace erroneously resetting the vPMU
        during VM save/restore"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  riscv/kvm: Fix VM hang in case of timer delta being zero.
  KVM: arm64: Check for kvm_vma_mte_allowed in the critical section
  KVM: arm64: Disable interrupts while walking userspace PTs
  KVM: arm64: Retry fault if vma_lookup() results become invalid
  KVM: arm64: PMU: Don't save PMCR_EL0.{C,P} for the vCPU
  KVM: arm64: PMU: Fix GET_ONE_REG for vPMC regs to return the current value

15 months agoACPI: bus: Rework system-level device notification handling
Rafael J. Wysocki [Fri, 24 Mar 2023 13:33:42 +0000 (14:33 +0100)]
ACPI: bus: Rework system-level device notification handling

For ACPI drivers that provide a ->notify() callback and set
ACPI_DRIVER_ALL_NOTIFY_EVENTS in their flags, that callback can be
invoked while either the ->add() or the ->remove() callback is running
without any synchronization at the bus type level which is counter to
the common-sense expectation that notification handling should only be
enabled when the driver is actually bound to the device.  As a result,
if the driver is not careful enough, it's ->notify() callback may crash
when it is invoked too early or too late [1].

This issue has been amplified by commit d6fb6ee1820c ("ACPI: bus: Drop
driver member of struct acpi_device") that made acpi_bus_notify() check
for the presence of the driver and its ->notify() callback directly
instead of using an extra driver pointer that was only set and cleared
by the bus type code, but it was present before that commit although
it was harder to reproduce then.

It can be addressed by using the observation that
acpi_device_install_notify_handler() can be modified to install the
handler for all types of events when ACPI_DRIVER_ALL_NOTIFY_EVENTS is
set in the driver flags, in which case acpi_bus_notify() will not need
to invoke the driver's ->notify() callback any more and that callback
will only be invoked after acpi_device_install_notify_handler() has run
and before acpi_device_remove_notify_handler() runs, which implies the
correct ordering with respect to the other ACPI driver callbacks.

Modify the code accordingly and while at it, drop two redundant local
variables from acpi_bus_notify() and turn its description comment into
a proper kerneldoc one.

Fixes: d6fb6ee1820c ("ACPI: bus: Drop driver member of struct acpi_device")
Link: https://lore.kernel.org/linux-acpi/9f6cba7a8a57e5a687c934e8e406e28c.squirrel@mail.panix.com
Reported-by: Pierre Asselin <pa@panix.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Pierre Asselin <pa@panix.com>
15 months agoMerge tag 'platform-drivers-x86-v6.3-3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 27 Mar 2023 16:45:39 +0000 (09:45 -0700)]
Merge tag 'platform-drivers-x86-v6.3-3' of git://git./linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver fixes from Hans de Goede:

 -  Intel tpmi/vsec fixes

 -  think-lmi fixes

 -  two other small fixes / hw-id additions

* tag 'platform-drivers-x86-v6.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/surface: aggregator: Add missing fwnode_handle_put()
  platform/x86: think-lmi: Add possible_values for ThinkStation
  platform/x86: think-lmi: only display possible_values if available
  platform/x86: think-lmi: use correct possible_values delimiters
  platform/x86: think-lmi: add missing type attribute
  platform/x86 (gigabyte-wmi): Add support for A320M-S2H V2
  platform/x86/intel: tpmi: Revise the comment of intel_vsec_add_aux
  platform/x86/intel: tpmi: Fix double free in tpmi_create_device()
  platform/x86/intel: vsec: Fix a memory leak in intel_vsec_add_aux

15 months agoMerge tag 'mtd/fixes-for-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 27 Mar 2023 16:41:17 +0000 (09:41 -0700)]
Merge tag 'mtd/fixes-for-6.3-rc5' of git://git./linux/kernel/git/mtd/linux

Pull MTD fixes from Miquel Raynal:
 "Raw NAND controller driver fixes:

   - meson:
      - Invalidate cache on polling ECC bit
      - Initialize struct with zeroes

   - nandsim: Artificially prevent sequential page reads

  ECC engine driver fixes:

   - mxic-ecc: Fix mxic_ecc_data_xfer_wait_for_completion() when irq is
     used

  Binging fixes:

   - jedec,spi-nor: Document CPOL/CPHA support"

* tag 'mtd/fixes-for-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: rawnand: meson: invalidate cache on polling ECC bit
  mtd: rawnand: nandsim: Artificially prevent sequential page reads
  dt-bindings: mtd: jedec,spi-nor: Document CPOL/CPHA support
  mtd: nand: mxic-ecc: Fix mxic_ecc_data_xfer_wait_for_completion() when irq is used
  mtd: rawnand: meson: initialize struct with zeroes

15 months agos390/ptrace: fix PTRACE_GET_LAST_BREAK error handling
Heiko Carstens [Mon, 6 Mar 2023 11:31:30 +0000 (12:31 +0100)]
s390/ptrace: fix PTRACE_GET_LAST_BREAK error handling

Return -EFAULT if put_user() for the PTRACE_GET_LAST_BREAK
request fails, instead of silently ignoring it.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
15 months agos390: reintroduce expoline dependence to scripts
Jiri Slaby (SUSE) [Thu, 16 Mar 2023 11:28:09 +0000 (12:28 +0100)]
s390: reintroduce expoline dependence to scripts

Expolines depend on scripts/basic/fixdep. And build of expolines can now
race with the fixdep build:

 make[1]: *** Deleting file 'arch/s390/lib/expoline/expoline.o'
 /bin/sh: line 1: scripts/basic/fixdep: Permission denied
 make[1]: *** [../scripts/Makefile.build:385: arch/s390/lib/expoline/expoline.o] Error 126
 make: *** [../arch/s390/Makefile:166: expoline_prepare] Error 2

The dependence was removed in the below Fixes: commit. So reintroduce
the dependence on scripts.

Fixes: a0b0987a7811 ("s390/nospec: remove unneeded header includes")
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: stable@vger.kernel.org
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230316112809.7903-1-jirislaby@kernel.org
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
15 months agos390/vfio-ap: fix memory leak in vfio_ap device driver
Tony Krowiak [Mon, 20 Mar 2023 15:04:47 +0000 (11:04 -0400)]
s390/vfio-ap: fix memory leak in vfio_ap device driver

The device release callback function invoked to release the matrix device
uses the dev_get_drvdata(device *dev) function to retrieve the
pointer to the vfio_matrix_dev object in order to free its storage. The
problem is, this object is not stored as drvdata with the device; since the
kfree function will accept a NULL pointer, the memory for the
vfio_matrix_dev object is never freed.

Since the device being released is contained within the vfio_matrix_dev
object, the container_of macro will be used to retrieve its pointer.

Fixes: 1fde573413b5 ("s390: vfio-ap: base implementation of VFIO AP device driver")
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Link: https://lore.kernel.org/r/20230320150447.34557-1-akrowiak@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
15 months agos390/uaccess: add missing earlyclobber annotations to __clear_user()
Heiko Carstens [Thu, 23 Mar 2023 12:09:16 +0000 (13:09 +0100)]
s390/uaccess: add missing earlyclobber annotations to __clear_user()

Add missing earlyclobber annotation to size, to, and tmp2 operands of the
__clear_user() inline assembly since they are modified or written to before
the last usage of all input operands. This can lead to incorrect register
allocation for the inline assembly.

Fixes: 6c2a9e6df604 ("[S390] Use alternative user-copy operations for new hardware.")
Reported-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/all/20230321122514.1743889-3-mark.rutland@arm.com/
Cc: stable@vger.kernel.org
Reviewed-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
15 months agoMerge tag 'kvm-riscv-fixes-6.3-1' of https://github.com/kvm-riscv/linux into HEAD
Paolo Bonzini [Mon, 27 Mar 2023 14:04:07 +0000 (10:04 -0400)]
Merge tag 'kvm-riscv-fixes-6.3-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv fixes for 6.3, take #1

- Fix VM hang in case of timer delta being zero

15 months agoMerge tag 'kvmarm-fixes-6.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmar...
Paolo Bonzini [Mon, 27 Mar 2023 14:03:16 +0000 (10:03 -0400)]
Merge tag 'kvmarm-fixes-6.3-2' of git://git./linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.3, part #2

Fixes for a rather interesting set of bugs relating to the MMU:

 - Read the MMU notifier seq before dropping the mmap lock to guard
   against reading a potentially stale VMA

 - Disable interrupts when walking user page tables to protect against
   the page table being freed

 - Read the MTE permissions for the VMA within the mmap lock critical
   section, avoiding the use of a potentally stale VMA pointer

Additionally, some fixes targeting the vPMU:

 - Return the sum of the current perf event value and PMC snapshot for
   reads from userspace

 - Don't save the value of guest writes to PMCR_EL0.{C,P}, which could
   otherwise lead to userspace erroneously resetting the vPMU during VM
   save/restore

15 months agocan: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
Ivan Orlov [Tue, 14 Mar 2023 12:04:45 +0000 (16:04 +0400)]
can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write

Syzkaller reported the following issue:

=====================================================
BUG: KMSAN: uninit-value in aio_rw_done fs/aio.c:1520 [inline]
BUG: KMSAN: uninit-value in aio_write+0x899/0x950 fs/aio.c:1600
 aio_rw_done fs/aio.c:1520 [inline]
 aio_write+0x899/0x950 fs/aio.c:1600
 io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019
 __do_sys_io_submit fs/aio.c:2078 [inline]
 __se_sys_io_submit+0x293/0x770 fs/aio.c:2048
 __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:766 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:967 [inline]
 __kmalloc+0x11d/0x3b0 mm/slab_common.c:981
 kmalloc_array include/linux/slab.h:636 [inline]
 bcm_tx_setup+0x80e/0x29d0 net/can/bcm.c:930
 bcm_sendmsg+0x3a2/0xce0 net/can/bcm.c:1351
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 sock_write_iter+0x495/0x5e0 net/socket.c:1108
 call_write_iter include/linux/fs.h:2189 [inline]
 aio_write+0x63a/0x950 fs/aio.c:1600
 io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019
 __do_sys_io_submit fs/aio.c:2078 [inline]
 __se_sys_io_submit+0x293/0x770 fs/aio.c:2048
 __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

CPU: 1 PID: 5034 Comm: syz-executor350 Not tainted 6.2.0-rc6-syzkaller-80422-geda666ff2276 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
=====================================================

We can follow the call chain and find that 'bcm_tx_setup' function
calls 'memcpy_from_msg' to copy some content to the newly allocated
frame of 'op->frames'. After that the 'len' field of copied structure
being compared with some constant value (64 or 8). However, if
'memcpy_from_msg' returns an error, we will compare some uninitialized
memory. This triggers 'uninit-value' issue.

This patch will add 'memcpy_from_msg' possible errors processing to
avoid uninit-value issue.

Tested via syzkaller

Reported-by: syzbot+c9bfd85eca611ebf5db1@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=47f897f8ad958bbde5790ebf389b5e7e0a345089
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Fixes: 6f3b911d5f29b ("can: bcm: add support for CAN FD frames")
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/all/20230314120445.12407-1-ivan.orlov0322@gmail.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
15 months agodrm/i915/perf: Drop wakeref on GuC RC error
Chris Wilson [Thu, 23 Mar 2023 22:58:51 +0000 (15:58 -0700)]
drm/i915/perf: Drop wakeref on GuC RC error

If we fail to adjust the GuC run-control on opening the perf stream,
make sure we unwind the wakeref just taken.

v2: Retain old goto label names (Ashutosh)
v3: Drop bitfield boolean

Fixes: 01e742746785 ("drm/i915/guc: Support OA when Wa_16011777198 is enabled")
Signed-off-by: Chris Wilson <chris.p.wilson@linux.intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323225901.3743681-2-umesh.nerlige.ramappa@intel.com
(cherry picked from commit 2810ac6c753d17ee2572ffb57fe2382a786a080a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915/dpt: Treat the DPT BO as a framebuffer
Ville Syrjälä [Mon, 20 Mar 2023 09:05:17 +0000 (11:05 +0200)]
drm/i915/dpt: Treat the DPT BO as a framebuffer

Currently i915_gem_object_is_framebuffer() doesn't treat the
BO containing the framebuffer's DPT as a framebuffer itself.
This means eg. that the shrinker can evict the DPT BO while
leaving the actual FB BO bound, when the DPT is allocated
from regular shmem.

That causes an immediate oops during hibernate as we
try to rewrite the PTEs inside the already evicted
DPT obj.

TODO: presumably this might also be the reason for the
DPT related display faults under heavy memory pressure,
but I'm still not sure how that would happen as the object
should be pinned by intel_dpt_pin() while in active use by
the display engine...

Cc: stable@vger.kernel.org
Cc: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Fixes: 0dc987b699ce ("drm/i915/display: Add smem fallback allocation for dpt")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320090522.9909-2-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
(cherry picked from commit 779cb5ba64ec7df80675a956c9022929514f517a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915/gem: Flush lmem contents after construction
Chris Wilson [Thu, 16 Mar 2023 16:59:18 +0000 (17:59 +0100)]
drm/i915/gem: Flush lmem contents after construction

i915_gem_object_create_lmem_from_data() lacks the flush of the data
written to lmem to ensure the object is marked as dirty and the writes
flushed to the backing store. Once created, we can immediately release
the obj->mm.mapping caching of the vmap.

Fixes: 7acbbc7cf485 ("drm/i915/guc: put all guc objects in lmem when available")
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: Chris Wilson <chris.p.wilson@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.16+
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230316165918.13074-1-nirmoy.das@intel.com
(cherry picked from commit e2ee10474ce766686e7a7496585cdfaf79e3a1bf)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915/tc: Fix the ICL PHY ownership check in TC-cold state
Imre Deak [Thu, 16 Mar 2023 13:17:13 +0000 (15:17 +0200)]
drm/i915/tc: Fix the ICL PHY ownership check in TC-cold state

The commit renaming icl_tc_phy_is_in_safe_mode() to
icl_tc_phy_take_ownership() didn't flip the function's return value
accordingly, fix this up.

This didn't cause an actual problem besides state check errors, since
the function is only used during HW readout.

Cc: José Roberto de Souza <jose.souza@intel.com>
Fixes: f53979d68a77 ("drm/i915/display/tc: Rename safe_mode functions ownership")
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-4-imre.deak@intel.com
(cherry picked from commit f2c7959dda614d9b7c6a41510492de39d31705ec)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915: Disable DC states for all commits
Ville Syrjälä [Mon, 20 Mar 2023 18:35:32 +0000 (20:35 +0200)]
drm/i915: Disable DC states for all commits

Keeping DC states enabled is incompatible with the _noarm()/_arm()
split we use for writing pipe/plane registers. When DC5 and PSR
are enabled, all pipe/plane registers effectively become self-arming
on account of DC5 exit arming the update, and PSR exit latching it.

What probably saves us most of the time is that (with PIPE_MISC[21]=0)
all pipe register writes themselves trigger PSR exit, and then
we don't re-enter PSR until the idle frame count has elapsed.
So it may be that the PSR exit happens already before we've
updated the state too much.

Also the PSR1 panel (at least on this KBL) seems to discard the first
frame we trasmit, presumably still scanning out from its internal
framebuffer at that point. So only the second frame we transmit is
actually visible. But I suppose that could also be panel specific
behaviour. I haven't checked out how other PSR panels behave, nor
did I bother to check what the eDP spec has to say about this.

And since this really is all about DC states, let's switch from
the MODESET domain to the DC_OFF domain. Functionally they are
100% identical. We should probably remove the MODESET domain...

And for good measure let's toss in an assert to the place where
we do the _noarm() register writes to make sure DC states are
in fact off.

v2: Just use intel_display_power_is_enabled() (Imre)

Cc: <stable@vger.kernel.org> #v5.17+
Cc: Manasi Navare <navaremanasi@google.com>
Cc: Drew Davenport <ddavenport@chromium.org>
Cc: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Fixes: d13dde449580 ("drm/i915: Split pipe+output CSC programming to noarm+arm pair")
Fixes: f8a005eb8972 ("drm/i915: Optimize icl+ universal plane programming")
Fixes: 890b6ec4a522 ("drm/i915: Split skl+ plane update into noarm+arm pair")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320183532.17727-1-ville.syrjala@linux.intel.com
(cherry picked from commit 41b4c7fe72b6105a4b49395eea9aa40cef94288d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915: Workaround ICL CSC_MODE sticky arming
Ville Syrjälä [Mon, 20 Mar 2023 09:54:36 +0000 (11:54 +0200)]
drm/i915: Workaround ICL CSC_MODE sticky arming

Unlike SKL/GLK the ICL CSC unit suffers from a new issue where
CSC_MODE arming is sticky. That is, once armed it remains armed
causing the CSC coeff/offset registers to become effectively
self-arming.

CSC coeff/offset registers writes no longer disarm the CSC,
but fortunately register read still do. So we can use that
to disarm the CSC unit once the registers for the current
frame have been latched. This avoid s the self-arming behaviour
from persisting into the next frame's .color_commit_noarm()
call.

Cc: <stable@vger.kernel.org> #v5.19+
Cc: Manasi Navare <navaremanasi@google.com>
Cc: Drew Davenport <ddavenport@chromium.org>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jouni Högander <jouni.hogander@intel.com>
Fixes: d13dde449580 ("drm/i915: Split pipe+output CSC programming to noarm+arm pair")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-5-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit 92736f1b452bbb8a66bdb5b1d263ad00e04dd3b8)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915: Add a .color_post_update() hook
Ville Syrjälä [Mon, 20 Mar 2023 09:54:35 +0000 (11:54 +0200)]
drm/i915: Add a .color_post_update() hook

We're going to need stuff after the color management
register latching has happened. Add a corresponding hook.

Cc: <stable@vger.kernel.org> #v5.19+
Cc: Manasi Navare <navaremanasi@google.com>
Cc: Drew Davenport <ddavenport@chromium.org>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-4-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit 3962ca4e080a525fc9eae87aa6b2286f1fae351d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915: Move CSC load back into .color_commit_arm() when PSR is enabled on skl/glk
Ville Syrjälä [Mon, 20 Mar 2023 09:54:34 +0000 (11:54 +0200)]
drm/i915: Move CSC load back into .color_commit_arm() when PSR is enabled on skl/glk

SKL/GLK CSC unit suffers from a nasty issue where a CSC
coeff/offset register read or write between DC5 exit and
PSR exit will undo the CSC arming performed by DMC, and
then during PSR exit the hardware will latch zeroes into
the active CSC registers. This causes any plane going
through the CSC to output all black.

We can sidestep the issue by making sure the PSR exit has
already actually happened before we touch the CSC coeff/offset
registers. Easiest way to guarantee that is to just move the
CSC programming back into the .color_commir_arm() as we force
a PSR exit (and crucially wait for it to actually happen)
prior to touching the arming registers.

When PSR (and thus also DC states) are disabled we don't
have anything to worry about, so we can keep using the
more optional _noarm() hook for writing the CSC registers.

Cc: <stable@vger.kernel.org> #v5.19+
Cc: Manasi Navare <navaremanasi@google.com>
Cc: Drew Davenport <ddavenport@chromium.org>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jouni Högander <jouni.hogander@intel.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8283
Fixes: d13dde449580 ("drm/i915: Split pipe+output CSC programming to noarm+arm pair")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-3-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit 80a892a4c2428b65366721599fc5fe50eaed35fd)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915: Split icl_color_commit_noarm() from skl_color_commit_noarm()
Ville Syrjälä [Mon, 20 Mar 2023 09:54:33 +0000 (11:54 +0200)]
drm/i915: Split icl_color_commit_noarm() from skl_color_commit_noarm()

We're going to want different behavior for skl/glk vs. icl
in .color_commit_noarm(), so split the hook into two. Arguably
we already had slightly different behaviour since
csc_enable/gamma_enable are never set on icl+, so the old
code was perhaps a bit confusing as well.

Cc: <stable@vger.kernel.org> #v5.19+
Cc: Manasi Navare <navaremanasi@google.com>
Cc: Drew Davenport <ddavenport@chromium.org>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-2-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit f161eb01f50ab31f2084975b43bce54b7b671e17)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agodrm/i915/pmu: Use functions common with sysfs to read actual freq
Ashutosh Dixit [Thu, 16 Mar 2023 00:48:00 +0000 (17:48 -0700)]
drm/i915/pmu: Use functions common with sysfs to read actual freq

Expose intel_rps_read_actual_frequency_fw to read the actual freq without
taking forcewake for use by PMU. The code is refactored to use a common set
of functions across sysfs and PMU. Using common functions with sysfs in PMU
solves the issues of missing support for MTL and missing support for older
generations (prior to Gen6). It also future proofs the PMU where sometimes
code has been updated for sysfs and PMU has been missed.

v2: Remove runtime_pm_if_in_use from read_actual_frequency_fw (Tvrtko)

v3: (Tvrtko)
 - Remove goto in __read_cagf
 - Unexport intel_rps_get_cagf and intel_rps_read_punit_req

Fixes: 22009b6dad66 ("drm/i915/mtl: Modify CAGF functions for MTL")
Link: https://gitlab.freedesktop.org/drm/intel/-/issues/8280
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230316004800.2539753-1-ashutosh.dixit@intel.com
(cherry picked from commit 44df42e66139b5fac8db49ee354be279210f9816)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
15 months agonet: stmmac: don't reject VLANs when IFF_PROMISC is set
Vladimir Oltean [Sat, 25 Mar 2023 11:28:15 +0000 (13:28 +0200)]
net: stmmac: don't reject VLANs when IFF_PROMISC is set

The blamed commit has introduced the following tests to
dwmac4_add_hw_vlan_rx_fltr(), called from stmmac_vlan_rx_add_vid():

if (hw->promisc) {
netdev_err(dev,
   "Adding VLAN in promisc mode not supported\n");
return -EPERM;
}

"VLAN promiscuous" mode is keyed in this driver to IFF_PROMISC, and so,
vlan_vid_add() and vlan_vid_del() calls cannot take place in IFF_PROMISC
mode. I have the following 2 arguments that this restriction is.... hm,
how shall I put it nicely... unproductive :)

First, take the case of a Linux bridge. If the kernel is compiled with
CONFIG_BRIDGE_VLAN_FILTERING=y, then this bridge shall have a VLAN
database. The bridge shall try to call vlan_add_vid() on its bridge
ports for each VLAN in the VLAN table. It will do this irrespectively of
whether that port is *currently* VLAN-aware or not. So it will do this
even when the bridge was created with vlan_filtering 0.
But the Linux bridge, in VLAN-unaware mode, configures its ports in
promiscuous (IFF_PROMISC) mode, so that they accept packets with any
MAC DA (a switch must do this in order to forward those packets which
are not directly targeted to its MAC address).

As a result, the stmmac driver does not work as a bridge port, when the
kernel is compiled with CONFIG_BRIDGE_VLAN_FILTERING=y.

$ ip link add br0 type bridge && ip link set br0 up
$ ip link set eth0 master br0 && ip link set eth0 up
[ 2333.943296] br0: port 1(eth0) entered blocking state
[ 2333.943381] br0: port 1(eth0) entered disabled state
[ 2333.943782] device eth0 entered promiscuous mode
[ 2333.944080] 4033c000.ethernet eth0: Adding VLAN in promisc mode not supported
[ 2333.976509] 4033c000.ethernet eth0: failed to initialize vlan filtering on this port
RTNETLINK answers: Operation not permitted

Secondly, take the case of stmmac as DSA master. Some switch tagging
protocols are based on 802.1Q VLANs (tag_sja1105.c), and as such,
tag_8021q.c uses vlan_vid_add() to work with VLAN-filtering DSA masters.
But also, when a DSA port becomes promiscuous (for example when it joins
a bridge), the DSA framework also makes the DSA master promiscuous.

Moreover, for every VLAN that a DSA switch sends to the CPU, DSA also
programs a VLAN filter on the DSA master, because if the the DSA switch
uses a tail tag, then the hardware frame parser of the DSA master will
see VLAN as VLAN, and might filter them out, for being unknown.

Due to the above 2 reasons, my belief is that the stmmac driver does not
get to choose to not accept vlan_vid_add() calls while IFF_PROMISC is
enabled, because the 2 are completely independent and there are code
paths in the network stack which directly lead to this situation
occurring, without the user's direct input.

In fact, my belief is that "VLAN promiscuous" mode should have never
been keyed on IFF_PROMISC in the first place, but rather, on the
NETIF_F_HW_VLAN_CTAG_FILTER feature flag which can be toggled by the
user through ethtool -k, when present in netdev->hw_features.

In the stmmac driver, NETIF_F_HW_VLAN_CTAG_FILTER is only present in
"features", making this feature "on [fixed]".

I have this belief because I am unaware of any definition of promiscuity
which implies having an effect on anything other than MAC DA (therefore
not VLAN). However, I seem to be rather alone in having this opinion,
looking back at the disagreements from this discussion:
https://lore.kernel.org/netdev/20201110153958.ci5ekor3o2ekg3ky@ipetronik.com/

In any case, to remove the vlan_vid_add() dependency on !IFF_PROMISC,
one would need to remove the check and see what fails. I guess the test
was there because of the way in which dwmac4_vlan_promisc_enable() is
implemented.

For context, the dwmac4 supports Perfect Filtering for a limited number
of VLANs - dwmac4_get_num_vlan(), priv->hw->num_vlan, with a fallback on
Hash Filtering - priv->dma_cap.vlhash - see stmmac_vlan_update(), also
visible in cat /sys/kernel/debug/stmmaceth/eth0/dma_cap | grep 'VLAN
Hash Filtering'.

The perfect filtering is based on MAC_VLAN_Tag_Filter/MAC_VLAN_Tag_Data
registers, accessed in the driver through dwmac4_write_vlan_filter().

The hash filtering is based on the MAC_VLAN_Hash_Table register, named
GMAC_VLAN_HASH_TABLE in the driver and accessed by dwmac4_update_vlan_hash().
The control bit for enabling hash filtering is GMAC_VLAN_VTHM
(MAC_VLAN_Tag_Ctrl bit VTHM: VLAN Tag Hash Table Match Enable).

Now, the description of dwmac4_vlan_promisc_enable() is that it iterates
through the driver's cache of perfect filter entries (hw->vlan_filter[i],
added by dwmac4_add_hw_vlan_rx_fltr()), and evicts them from hardware by
unsetting their GMAC_VLAN_TAG_DATA_VEN (MAC_VLAN_Tag_Data bit VEN - VLAN
Tag Enable) bit. Then it unsets the GMAC_VLAN_VTHM bit, which disables
hash matching.

This leaves the MAC, according to table "VLAN Match Status" from the
documentation, to always enter these data paths:

VID    |VLAN Perfect Filter |VTHM Bit |VLAN Hash Filter |Final VLAN Match
       |Match Result        |         |Match Result     |Status
-------|--------------------|---------|-----------------|----------------
VID!=0 |Fail                |0        |don't care       |Pass

So, dwmac4_vlan_promisc_enable() does its job, but by unsetting
GMAC_VLAN_VTHM, it conflicts with the other code path which controls
this bit: dwmac4_update_vlan_hash(), called through stmmac_update_vlan_hash()
from stmmac_vlan_rx_add_vid() and from stmmac_vlan_rx_kill_vid().
This is, I guess, why dwmac4_add_hw_vlan_rx_fltr() is not allowed to run
after dwmac4_vlan_promisc_enable() has unset GMAC_VLAN_VTHM: because if
it did, then dwmac4_update_vlan_hash() would set GMAC_VLAN_VTHM again,
breaking the "VLAN promiscuity".

It turns out that dwmac4_vlan_promisc_enable() is way too complicated
for what needs to be done. The MAC_Packet_Filter register also has the
VTFE bit (VLAN Tag Filter Enable), which simply controls whether VLAN
tagged packets which don't match the filtering tables (either perfect or
hash) are dropped or not. At the moment, this driver unconditionally
sets GMAC_PACKET_FILTER_VTFE if NETIF_F_HW_VLAN_CTAG_FILTER was detected
through the priv->dma_cap.vlhash capability bits of the device, in
stmmac_dvr_probe().

I would suggest deleting the unnecessarily complex logic from
dwmac4_vlan_promisc_enable(), and simply unsetting GMAC_PACKET_FILTER_VTFE
when becoming IFF_PROMISC, which has the same effect of allowing packets
with any VLAN tags, but has the additional benefit of being able to run
concurrently with stmmac_vlan_rx_add_vid() and stmmac_vlan_rx_kill_vid().

As much as I believe that the VTFE bit should have been exclusively
controlled by NETIF_F_HW_VLAN_CTAG_FILTER through ethtool, and not by
IFF_PROMISC, changing that is not a punctual fix to the problem, and it
would probably break the VFFQ feature added by the later commit
e0f9956a3862 ("net: stmmac: Add option for VLAN filter fail queue
enable"). From the commit description, VFFQ needs IFF_PROMISC=on and
VTFE=off in order to work (and this change respects that). But if VTFE
was changed to be controlled through ethtool -k, then a user-visible
change would have been introduced in Intel's scripts (a need to run
"ethtool -k eth0 rx-vlan-filter off" which did not exist before).

The patch was tested with this set of commands:

  ip link set eth0 up
  ip link add link eth0 name eth0.100 type vlan id 100
  ip addr add 192.168.100.2/24 dev eth0.100 && ip link set eth0.100 up
  ip link set eth0 promisc on
  ip link add link eth0 name eth0.101 type vlan id 101
  ip addr add 192.168.101.2/24 dev eth0.101 && ip link set eth0.101 up
  ip link set eth0 promisc off
  ping -c 5 192.168.100.1
  ping -c 5 192.168.101.1
  ip link set eth0 promisc on
  ping -c 5 192.168.100.1
  ping -c 5 192.168.101.1
  ip link del eth0.100
  ip link del eth0.101
  # Wait for VLAN-tagged pings from the other end...
  # Check with "tcpdump -i eth0 -e -n -p" and we should see them
  ip link set eth0 promisc off
  # Wait for VLAN-tagged pings from the other end...
  # Check with "tcpdump -i eth0 -e -n -p" and we shouldn't see them
  # anymore, but remove the "-p" argument from tcpdump and they're there.

Fixes: c89f44ff10fd ("net: stmmac: Add support for VLAN promiscuous mode")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 months agocan: j1939: prevent deadlock by moving j1939_sk_errqueue()
Oleksij Rempel [Fri, 24 Mar 2023 13:01:41 +0000 (14:01 +0100)]
can: j1939: prevent deadlock by moving j1939_sk_errqueue()

This commit addresses a deadlock situation that can occur in certain
scenarios, such as when running data TP/ETP transfer and subscribing to
the error queue while receiving a net down event. The deadlock involves
locks in the following order:

3
  j1939_session_list_lock ->  active_session_list_lock
  j1939_session_activate
  ...
  j1939_sk_queue_activate_next -> sk_session_queue_lock
  ...
  j1939_xtp_rx_eoma_one

2
  j1939_sk_queue_drop_all  ->  sk_session_queue_lock
  ...
  j1939_sk_netdev_event_netdown -> j1939_socks_lock
  j1939_netdev_notify

1
  j1939_sk_errqueue -> j1939_socks_lock
  __j1939_session_cancel -> active_session_list_lock
  j1939_tp_rxtimer

       CPU0                    CPU1
       ----                    ----
  lock(&priv->active_session_list_lock);
                               lock(&jsk->sk_session_queue_lock);
                               lock(&priv->active_session_list_lock);
  lock(&priv->j1939_socks_lock);

The solution implemented in this commit is to move the
j1939_sk_errqueue() call out of the active_session_list_lock context,
thus preventing the deadlock situation.

Reported-by: syzbot+ee1cd780f69483a8616b@syzkaller.appspotmail.com
Fixes: 5b9272e93f2e ("can: j1939: extend UAPI to notify about RX status")
Co-developed-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/all/20230324130141.2132787-1-o.rempel@pengutronix.de
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
15 months agonet: dsa: b53: mmap: add phy ops
Álvaro Fernández Rojas [Thu, 23 Mar 2023 19:48:41 +0000 (20:48 +0100)]
net: dsa: b53: mmap: add phy ops

Implement phy_read16() and phy_write16() ops for B53 MMAP to avoid accessing
B53_PORT_MII_PAGE registers which hangs the device.
This access should be done through the MDIO Mux bus controller.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>