OSDN Git Service
Ming Lin [Mon, 25 Apr 2016 21:33:20 +0000 (14:33 -0700)]
nvme: add helper nvme_cleanup_cmd()
This hides command cleanup into nvme.h and fabrics drivers will
also use it.
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Tue, 26 Apr 2016 11:52:00 +0000 (13:52 +0200)]
nvme: move AER handling to common code
The transport driver still needs to do the actual submission, but all the
higher level code can be shared.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Tue, 26 Apr 2016 11:51:59 +0000 (13:51 +0200)]
nvme: move namespace scanning to core
Move the scan work item and surrounding code to the common code. For now
we need a new finish_scan method to allow the PCI driver to set the
irq affinity hints, but I have plans in the works to obsolete this as well.
Note that this moves the namespace scanning from nvme_wq to the system
workqueue, but as we don't rely on namespace scanning to finish from reset
or I/O this should be fine.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Tue, 26 Apr 2016 11:51:58 +0000 (13:51 +0200)]
nvme: tighten up state check for namespace scanning
We only should be scanning namespaces if the controller is live. Currently
we call the function just before setting it live, so fix the code up to
move the call to nvme_queue_scan to just below the state change.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Tue, 26 Apr 2016 11:51:57 +0000 (13:51 +0200)]
nvme: introduce a controller state machine
Replace the adhoc flags in the PCI driver with a state machine in the
core code. Based on code from Sagi Grimberg for the Fabrics driver.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Tue, 26 Apr 2016 11:51:56 +0000 (13:51 +0200)]
nvme: remove the io_incapable method
It's unused since "NVMe: Move error handling to failed reset handler".
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jon Derrick <jonathan.derrick@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Wang Sheng-Hui [Thu, 28 Apr 2016 08:19:31 +0000 (16:19 +0800)]
NVMe: nvme_core_exit() should do cleanup in the reverse order as nvme_core_init does
nvme_core_init does:
1) register_blkdev
2) __register_chrdev
3) class_create
nvme_core_exit should do cleanup in the reverse order.
Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Keith Busch [Wed, 27 Apr 2016 21:51:18 +0000 (15:51 -0600)]
NVMe: Fix check_flush_dependency warning
If the controller fails and is degraded after a reset, we need to kill
off all requests queues before removing the inaccessble namespaces. This
will prevent del_gendisk from syncing dirty data, which we can't due
from a WQ_MEM_RECLAIM work queue.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Wang Sheng-Hui [Wed, 20 Apr 2016 02:04:32 +0000 (10:04 +0800)]
NVMe: small typo in section BLK_DEV_NVME_SCSI of host/Kconfig
"as well as " is miss typed "as well a " in section
"config BLK_DEV_NVME_SCSI"
Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Sat, 16 Apr 2016 18:57:58 +0000 (14:57 -0400)]
nvme: fix cntlid type
Controller IDs in NVMe are unsigned 16-bit types. In the Fabrics driver we
actually pass ctrl->id by reference, so we need it to have the correct type.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Jeff Moyer [Tue, 26 Apr 2016 01:12:38 +0000 (19:12 -0600)]
skd: remove broken discard support
Simply creating a file system on an skd device, followed by mount and
fstrim will result in errors in the logs and then a BUG(). Let's remove
discard support from that driver. As far as I can tell, it hasn't
worked right since it was merged. This patch also has a side-effect of
cleaning up an unintentional shadowed declaration inside of
skd_end_request.
I tested to ensure that I can still do I/O to the device using xfstests
./check -g quick. I didn't do anything more extensive than that,
though.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Wed, 13 Apr 2016 19:33:19 +0000 (13:33 -0600)]
block: kill off q->flush_flags
Now that we converted everything to the newer block write cache
interface, kill off the queue flush_flags and queueable flush
entries.
Signed-off-by: Jens Axboe <axboe@fb.com>
Guilherme G. Piccoli [Wed, 13 Apr 2016 14:08:20 +0000 (11:08 -0300)]
nvme: Avoid reset work on watchdog timer function during error recovery
This patch adds a check on nvme_watchdog_timer() function to avoid the
call to reset_work() when an error recovery process is ongoing on
controller. The check is made by looking at pci_channel_offline()
result.
If we don't check for this on nvme_watchdog_timer(), error recovery
mechanism can't recover well, because reset_work() won't be able to
do its job (since we're in the middle of an error) and so the
controller is removed from the system before error recovery mechanism
can perform slot reset (which would allow the adapter to recover).
In this patch we also have split the huge condition expression on
nvme_watchdog_timer() by introducing an auxiliary function to help
make the code more readable.
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Tue, 12 Apr 2016 22:11:11 +0000 (16:11 -0600)]
NVMe: silence warning about unused 'dev'
Depending on options, we might not be using dev in nvme_cancel_io():
drivers/nvme/host/pci.c: In function ‘nvme_cancel_io’:
drivers/nvme/host/pci.c:970:19: warning: unused variable ‘dev’ [-Wunused-variable]
struct nvme_dev *dev = data;
^
So get rid of it, and just cast for the dev_dbg_ratelimited() call.
Fixes:
82b4552b91c4 ("nvme: Use blk-mq helper for IO termination")
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Wed, 30 Mar 2016 16:19:30 +0000 (10:19 -0600)]
block: kill blk_queue_flush()
We don't have any drivers left using it, so kill it off. Update
documentation to use the newer blk_queue_write_cache().
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:19:17 +0000 (10:19 -0600)]
um: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:17:47 +0000 (10:17 -0600)]
mtd: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:17:20 +0000 (10:17 -0600)]
mmc/block: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:16:53 +0000 (10:16 -0600)]
md: update to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:16:25 +0000 (10:16 -0600)]
ide-disk: update to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:15:21 +0000 (10:15 -0600)]
xen-blkfront: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:14:14 +0000 (10:14 -0600)]
dm: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:13:22 +0000 (10:13 -0600)]
bcache: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:12:58 +0000 (10:12 -0600)]
virtio_blk: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:12:13 +0000 (10:12 -0600)]
ps3disk: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:11:42 +0000 (10:11 -0600)]
skd_main: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:11:15 +0000 (10:11 -0600)]
osdblk: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:10:53 +0000 (10:10 -0600)]
nbd: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Tue, 12 Apr 2016 21:45:39 +0000 (15:45 -0600)]
mtip32xx: remove call to blk_queue_flush()
The driver calls it with 0 for flags, since it doesn't have a writeback
cache. Just remove the call, as it's a no-op right now.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:09:35 +0000 (10:09 -0600)]
loop: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Wed, 30 Mar 2016 16:09:01 +0000 (10:09 -0600)]
drbd: switch to using blk_queue_write_cache()
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Jens Axboe [Tue, 12 Apr 2016 21:43:09 +0000 (15:43 -0600)]
NVMe: switch to using blk_queue_write_cache()
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Wed, 30 Mar 2016 16:06:11 +0000 (10:06 -0600)]
sd: switch to using blk_queue_write_cache()
Switch to the newer interface, instead of using blk_queue_flush()
directly.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Jens Axboe [Tue, 12 Apr 2016 21:46:35 +0000 (15:46 -0600)]
Merge branch 'for-4.7/core' into for-4.7/drivers
Jens Axboe [Tue, 12 Apr 2016 18:32:46 +0000 (12:32 -0600)]
block: add ability to flag write back caching on a device
Add an internal helper and flag for setting whether a queue has
write back caching, or write through (or none). Add a sysfs file
to show this as well, and make it changeable from user space.
This will replace the (awkward) blk_queue_flush() interface that
drivers currently use to inform the block layer of write cache state
and capabilities.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Sagi Grimberg [Thu, 10 Mar 2016 11:58:49 +0000 (13:58 +0200)]
blk-mq: Make blk_mq_all_tag_busy_iter static
No caller outside the blk-mq code so we can settle
with it static.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Keith Busch [Thu, 10 Mar 2016 11:58:48 +0000 (13:58 +0200)]
mtip32xx: Convert to use blk_mq_tagset_busy_iter
Only a single tags array anyway.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Sagi Grimberg [Tue, 12 Apr 2016 21:07:15 +0000 (15:07 -0600)]
nvme: Use blk-mq helper for IO termination
blk-mq offers a tagset iterator so let's use that
instead of using nvme_clear_queues.
Note, we changed nvme_queue_cancel_ios name to nvme_cancel_io
as there is no concept of a queue now in this function (we
also lost the print).
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Keith Busch [Tue, 12 Apr 2016 17:13:11 +0000 (11:13 -0600)]
NVMe: Skip async events for degraded controllers
If the controller is degraded, the driver should stay out of the way so
the user can recover the drive. This patch skips driver initiated async
event requests when the drive is in this state.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Lin [Tue, 12 Apr 2016 19:10:14 +0000 (13:10 -0600)]
nvme: add helper nvme_setup_cmd()
This moves nvme_setup_{flush,discard,rw} calls into a common
nvme_setup_cmd() helper. So we can eventually hide all the command
setup in the core module and don't even need to update the fabrics
drivers for any specific command type.
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Lin [Tue, 22 Mar 2016 07:24:45 +0000 (00:24 -0700)]
nvme: rewrite discard support
This rewrites nvme_setup_discard() with blk_add_request_payload().
It allocates only the necessary amount(16 bytes) for the payload.
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Lin [Tue, 22 Mar 2016 07:24:43 +0000 (00:24 -0700)]
nvme: add helper nvme_map_len()
The helper returns the number of bytes that need to be mapped
using PRPs/SGL entries.
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Lin [Tue, 5 Apr 2016 17:32:04 +0000 (10:32 -0700)]
nvme: add missing lock nesting notation
When unloading driver, nvme_disable_io_queues() calls nvme_delete_queue()
that sends nvme_admin_delete_cq command to admin sq. So when the command
completed, the lock acquired by nvme_irq() actually belongs to admin queue.
While the lock that nvme_del_cq_end() trying to acquire belongs to io queue.
So it will not deadlock.
This patch adds lock nesting notation to fix following report.
[ 109.840952] =============================================
[ 109.846379] [ INFO: possible recursive locking detected ]
[ 109.851806] 4.5.0+ #180 Tainted: G E
[ 109.856533] ---------------------------------------------
[ 109.861958] swapper/0/0 is trying to acquire lock:
[ 109.866771] (&(&nvmeq->q_lock)->rlock){-.....}, at: [<
ffffffffc0820bc6>] nvme_del_cq_end+0x26/0x70 [nvme]
[ 109.876535]
[ 109.876535] but task is already holding lock:
[ 109.882398] (&(&nvmeq->q_lock)->rlock){-.....}, at: [<
ffffffffc0820c2b>] nvme_irq+0x1b/0x50 [nvme]
[ 109.891547]
[ 109.891547] other info that might help us debug this:
[ 109.898107] Possible unsafe locking scenario:
[ 109.898107]
[ 109.904056] CPU0
[ 109.906515] ----
[ 109.908974] lock(&(&nvmeq->q_lock)->rlock);
[ 109.913381] lock(&(&nvmeq->q_lock)->rlock);
[ 109.917787]
[ 109.917787] *** DEADLOCK ***
[ 109.917787]
[ 109.923738] May be due to missing lock nesting notation
[ 109.923738]
[ 109.930558] 1 lock held by swapper/0/0:
[ 109.934413] #0: (&(&nvmeq->q_lock)->rlock){-.....}, at: [<
ffffffffc0820c2b>] nvme_irq+0x1b/0x50 [nvme]
[ 109.944010]
[ 109.944010] stack backtrace:
[ 109.948389] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G E 4.5.0+ #180
[ 109.955734] Hardware name: Dell Inc. OptiPlex 7010/0YXT71, BIOS A15 08/12/2013
[ 109.962989]
0000000000000000 ffff88011e203c38 ffffffff81383d9c ffffffff81c13540
[ 109.970478]
ffffffff826711d0 ffff88011e203ce8 ffffffff810bb429 0000000000000046
[ 109.977964]
0000000000000046 0000000000000000 0000000000b2e597 ffffffff81f4cb00
[ 109.985453] Call Trace:
[ 109.987911] <IRQ> [<
ffffffff81383d9c>] dump_stack+0x85/0xc9
[ 109.993711] [<
ffffffff810bb429>] __lock_acquire+0x19b9/0x1c60
[ 109.999575] [<
ffffffff810b6d1d>] ? trace_hardirqs_off+0xd/0x10
[ 110.005524] [<
ffffffff810b386d>] ? complete+0x3d/0x50
[ 110.010688] [<
ffffffff810bb760>] lock_acquire+0x90/0xf0
[ 110.016029] [<
ffffffffc0820bc6>] ? nvme_del_cq_end+0x26/0x70 [nvme]
[ 110.022418] [<
ffffffff81772afb>] _raw_spin_lock_irqsave+0x4b/0x60
[ 110.028632] [<
ffffffffc0820bc6>] ? nvme_del_cq_end+0x26/0x70 [nvme]
[ 110.035019] [<
ffffffffc0820bc6>] nvme_del_cq_end+0x26/0x70 [nvme]
[ 110.041232] [<
ffffffff8135b485>] blk_mq_end_request+0x35/0x60
[ 110.047095] [<
ffffffffc0821ad8>] nvme_complete_rq+0x68/0x190 [nvme]
[ 110.053481] [<
ffffffff8135b53f>] __blk_mq_complete_request+0x8f/0x130
[ 110.060043] [<
ffffffff8135b611>] blk_mq_complete_request+0x31/0x40
[ 110.066343] [<
ffffffffc08209e3>] __nvme_process_cq+0x83/0x240 [nvme]
[ 110.072818] [<
ffffffffc0820c35>] nvme_irq+0x25/0x50 [nvme]
[ 110.078419] [<
ffffffff810cdb66>] handle_irq_event_percpu+0x36/0x110
[ 110.084804] [<
ffffffff810cdc77>] handle_irq_event+0x37/0x60
[ 110.090491] [<
ffffffff810d0ea3>] handle_edge_irq+0x93/0x150
[ 110.096180] [<
ffffffff81012306>] handle_irq+0xa6/0x130
[ 110.101431] [<
ffffffff81011abe>] do_IRQ+0x5e/0x120
[ 110.106333] [<
ffffffff8177384c>] common_interrupt+0x8c/0x8c
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Keith Busch [Fri, 8 Apr 2016 22:09:10 +0000 (16:09 -0600)]
NVMe: Always use MSI/MSI-x interrupts
Multiple users have reported device initialization failure due the driver
not receiving legacy PCI interrupts. This is not unique to any particular
controller, but has been observed on multiple platforms.
There have been no issues reported or observed when with message signaled
interrupts, so this patch attempts to use MSI-x during initialization,
falling back to MSI. If that fails, legacy would become the default.
The setup_io_queues error handling had to change as a result: the admin
queue's msix_entry used to be initialized to the legacy IRQ. The case
where nr_io_queues is 0 would fail request_irq when setting up the admin
queue's interrupt since re-enabling MSI-x fails with 0 vectors, leaving
the admin queue's msix_entry invalid. Instead, return success immediately.
Reported-by: Tim Muhlemmer <muhlemmer@gmail.com>
Reported-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Sagi Grimberg [Thu, 10 Mar 2016 11:58:46 +0000 (13:58 +0200)]
blk-mq: Export tagset iter function
Its useful to iterate on all the active tags in cases
where we will need to fail all the queues IO.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
[hch: carefully check for valid tagsets]
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Lin [Tue, 22 Mar 2016 07:24:44 +0000 (00:24 -0700)]
block: add offset in blk_add_request_payload()
We could kmalloc() the payload, so need the offset in page.
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Howard Cochran [Thu, 10 Mar 2016 06:12:39 +0000 (01:12 -0500)]
writeback: Fix performance regression in wb_over_bg_thresh()
Commit
947e9762a8dd ("writeback: update wb_over_bg_thresh() to use
wb_domain aware operations") unintentionally changed this function's
meaning from "are there more dirty pages than the background writeback
threshold" to "are there more dirty pages than the writeback threshold".
The background writeback threshold is typically half of the writeback
threshold, so this had the effect of raising the number of dirty pages
required to cause a writeback worker to perform background writeout.
This can cause a very severe performance regression when a BDI uses
BDI_CAP_STRICTLIMIT because balance_dirty_pages() and the writeback worker
can now disagree on whether writeback should be initiated.
For example, in a system having 1GB of RAM, a single spinning disk, and
a "pass-through" FUSE filesystem mounted over the disk, application code
mmapped a 128MB file on the disk and was randomly dirtying pages in that
mapping.
Because FUSE uses strictlimit and has a default max_ratio of only 1%,
in balance_dirty_pages, thresh is ~200, bg_thresh is ~100, and the
dirty_freerun_ceiling is the average of those, ~150. So, it pauses the
dirtying processes when we have 151 dirty pages and wakes up a
background writeback worker. But the worker tests the wrong threshold
(200 instead of 100), so it does not initiate writeback and just
returns.
Thus, balance_dirty_pages keeps looping, sleeping and then waking up the
worker who will do nothing. It remains stuck in this state until the few
dirty pages that we have finally expire and we write them back for that
reason. Then the whole process repeats, resulting in near-zero
throughput through the FUSE BDI.
The fix is to call the parameterized variant of wb_calc_thresh, so that
the worker will do writeback if the bg_thresh is exceeded which was the
bahavior before the referenced commit.
Fixes:
947e9762a8dd ("writeback: update wb_over_bg_thresh() to use
wb_domain aware operations")
Signed-off-by: Howard Cochran <hcochran@kernelspring.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Mon, 11 Apr 2016 00:58:30 +0000 (17:58 -0700)]
Linux 4.6-rc3
Linus Torvalds [Mon, 11 Apr 2016 00:48:17 +0000 (17:48 -0700)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"A couple of small fixes, and wiring up the new syscalls which appeared
during the merge window"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8550/1: protect idiv patching against undefined gcc behavior
ARM: wire up preadv2 and pwritev2 syscalls
ARM: SMP enable of cache maintanence broadcast
Linus Torvalds [Mon, 11 Apr 2016 00:38:55 +0000 (17:38 -0700)]
Merge tag 'mmc-v4.6-rc1' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fixes from Ulf Hansson:
"Here are a couple of mmc fixes intended for v4.6 rc3:
MMC host:
- sdhci: Fix regression setting power on Trats2 board
- sdhci-pci: Add support and PCI IDs for more Broxton host controllers"
* tag 'mmc-v4.6-rc1' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: sdhci-pci: Add support and PCI IDs for more Broxton host controllers
mmc: sdhci: Fix regression setting power on Trats2 board
Linus Torvalds [Mon, 11 Apr 2016 00:04:42 +0000 (17:04 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Some bugfixes from I2C:
- fix a uevent triggered boot problem by removing a useless debug
print
- fix sysfs-attributes of the new i2c-demux-pinctrl driver to follow
standard kernel behaviour
- fix a potential division-by-zero error (needed two takes)"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: jz4780: really prevent potential division by zero
Revert "i2c: jz4780: prevent potential division by zero"
i2c: jz4780: prevent potential division by zero
i2c: mux: demux-pinctrl: Update docs to new sysfs-attributes
i2c: mux: demux-pinctrl: Clean up sysfs attributes
i2c: prevent endless uevent loop with CONFIG_I2C_DEBUG_CORE
Linus Torvalds [Sun, 10 Apr 2016 23:52:24 +0000 (16:52 -0700)]
Revert "ext4: allow readdir()'s of large empty directories to be interrupted"
This reverts commit
1028b55bafb7611dda1d8fed2aeca16a436b7dff.
It's broken: it makes ext4 return an error at an invalid point, causing
the readdir wrappers to write the the position of the last successful
directory entry into the position field, which means that the next
readdir will now return that last successful entry _again_.
You can only return fatal errors (that terminate the readdir directory
walk) from within the filesystem readdir functions, the "normal" errors
(that happen when the readdir buffer fills up, for example) happen in
the iterorator where we know the position of the actual failing entry.
I do have a very different patch that does the "signal_pending()"
handling inside the iterator function where it is allowable, but while
that one passes all the sanity checks, I screwed up something like four
times while emailing it out, so I'm not going to commit it today.
So my track record is not good enough, and the stars will have to align
better before that one gets committed. And it would be good to get some
review too, of course, since celestial alignments are always an iffy
debugging model.
IOW, let's just revert the commit that caused the problem for now.
Reported-by: Greg Thelen <gthelen@google.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 9 Apr 2016 21:10:20 +0000 (14:10 -0700)]
Merge branch 'parisc-4.6-3' of git://git./linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"Since commit
0de798584bde ("parisc: Use generic extable search and
sort routines") module loading is boken on parisc, because the parisc
module loader wasn't prepared for the new R_PARISC_PCREL32 relocations.
In addition, due to that breakage, Mikulas Patocka noticed that
handling exceptions from modules probably never worked on parisc. It
was just masked by the fact that exceptions from modules don't happen
during normal use.
This patch series fixes those issues and survives the tests of the
lib/test_user_copy kernel module test. Some patches are tagged for
stable"
* 'parisc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Update comment regarding relative extable support
parisc: Unbreak handling exceptions from kernel modules
parisc: Fix kernel crash with reversed copy_from_user()
parisc: Avoid function pointers for kernel exception routines
parisc: Handle R_PARISC_PCREL32 relocations in kernel modules
Linus Torvalds [Sat, 9 Apr 2016 21:05:45 +0000 (14:05 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"Three fixes, the first two are tagged for -stable:
- The ndctl utility/library gained expanded unit tests illuminating a
long standing bug in the libnvdimm SMART data retrieval
implementation.
It has been broken since its initial implementation, now fixed.
- Another one line fix for the detection of stale info blocks.
Without this change userspace can get into a situation where it is
unable to reconfigure a namespace.
- Fix the badblock initialization path in the presence of the new (in
v4.6-rc1) section alignment workarounds.
Without this change badblocks will be reported at the wrong offset.
These have received a build success report from the kbuild robot and
have appeared in -next with no reported issues"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm, pfn: fix nvdimm_namespace_add_poison() vs section alignment
libnvdimm, pfn: fix uuid validation
libnvdimm: fix smart data retrieval
Linus Torvalds [Sat, 9 Apr 2016 20:28:50 +0000 (13:28 -0700)]
Merge tag 'gpio-v4.6-3' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Here is a set of four GPIO fixes. The two fixes to the core are
serious as they are regressing minor architectures.
Core fixes:
- Defer GPIO device setup until after gpiolib is initialized.
It turns out that a few very tightly integrated GPIO platform
drivers initialize so early (befor core_initcall()) so that the
gpiolib isn't even initialized itself. That limits what the
library can do, and we cannot reference uninitialized fields until
later.
Defer some of the initialization until right after the gpiolib is
initialized in these (rare) cases.
- As a consequence: do not use devm_* resources when allocating the
states in the initial set-up of the gpiochip.
Driver fixes:
- In ACPI retrieveal: ignore GpioInt when looking for output GPIOs.
- Fix legacy builds on the PXA without a backing pin controller.
- Use correct datatype on pca953x register writes"
* tag 'gpio-v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: pca953x: Use correct u16 value for register word write
gpiolib: Defer gpio device setup until after gpiolib initialization
gpiolib: Do not use devm functions when registering gpio chip
gpio: pxa: fix legacy non pinctrl aware builds
gpio / ACPI: ignore GpioInt() GPIOs when requesting GPIO_OUT_*
Linus Torvalds [Sat, 9 Apr 2016 19:32:44 +0000 (12:32 -0700)]
Merge tag 'tty-4.6-rc3' of git://git./linux/kernel/git/gregkh/tty
Pull tty fixes from Greg KH:
"Here are two tty fixes for issues found.
One was due to a merge error in 4.6-rc1, and the other a regression
fix for UML consoles that broke in 4.6-rc1.
Both have been in linux-next for a while"
* tag 'tty-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: Fix merge of "tty: Refactor tty_open()"
tty: Fix UML console breakage
Linus Torvalds [Sat, 9 Apr 2016 19:23:02 +0000 (12:23 -0700)]
Merge tag 'usb-4.6-rc3' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some USB fixes and new device ids for 4.6-rc3.
Nothing major, the normal USB gadget fixes and usb-serial driver ids,
along with some other fixes mixed in. All except the USB serial ids
have been tested in linux-next, the id additions should be fine as
they are 'trivial'"
* tag 'usb-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (25 commits)
USB: option: add "D-Link DWM-221 B1" device id
USB: serial: cp210x: Adding GE Healthcare Device ID
USB: serial: ftdi_sio: Add support for ICP DAS I-756xU devices
usb: dwc3: keystone: drop dma_mask configuration
usb: gadget: udc-core: remove manual dma configuration
usb: dwc3: pci: add ID for one more Intel Broxton platform
usb: renesas_usbhs: fix to avoid using a disabled ep in usbhsg_queue_done()
usb: dwc2: do not override forced dr_mode in gadget setup
usb: gadget: f_midi: unlock on error
USB: digi_acceleport: do sanity checking for the number of ports
USB: cypress_m8: add endpoint sanity check
USB: mct_u232: add sanity checking in probe
usb: fix regression in SuperSpeed endpoint descriptor parsing
USB: usbip: fix potential out-of-bounds write
usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
usb: renesas_usbhs: avoid NULL pointer derefernce in usbhsf_pkt_handler()
usb: gadget: f_midi: Fixed a bug when buflen was smaller than wMaxPacketSize
usb: phy: qcom-8x16: fix regulator API abuse
usb: ch9: Fix SSP Device Cap wFunctionalitySupport type
usb: gadget: composite: Access SSP Dev Cap fields properly
...
Linus Torvalds [Sat, 9 Apr 2016 19:09:37 +0000 (12:09 -0700)]
Merge tag 'staging-4.6-rc3' of git://git./linux/kernel/git/gregkh/staging
Pull staging and IIO driver fixes from Greg KH:
"Here are some IIO driver fixes, along with two staging driver fixes
for 4.6-rc3.
One staging driver patch reverts the deletion of a driver that
happened in 4.6-rc1. We thought that laptop.org was dead, but it's
still alive and kicking, and has users that were mad we broke their
hardware by deleting a driver for their machines. So that driver is
added back and everyone is happy again.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
Revert "Staging: olpc_dcon: Remove obsolete driver"
staging/rdma/hfi1: select CRC32
iio: gyro: bmg160: fix buffer read values
iio: gyro: bmg160: fix endianness when reading axes
iio: accel: bmc150: fix endianness when reading axes
iio: st_magn: always define ST_MAGN_TRIGGER_SET_STATE
iio: fix config watermark initial value
iio: health: max30100: correct FIFO check condition
iio: imu: Fix inv_mpu6050 dependencies
iio: adc: Fix build error of missing devm_ioremap_resource on UM
iio: light: apds9960: correct FIFO check condition
iio: adc: max1363: correct reference voltage
iio: adc: max1363: add missing adc to max1363_id
Linus Torvalds [Sat, 9 Apr 2016 19:00:42 +0000 (12:00 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of eight fixes.
Two are trivial gcc-6 updates (brace additions and unused variable
removal). There's a couple of cxlflash regressions, a correction for
sd being overly chatty on revalidation (causing excess log increases).
A VPD issue which could crash USB devices because they seem very
intolerant to VPD inquiries, an ALUA deadlock fix and a mpt3sas buffer
overrun fix"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: Do not attach VPD to devices that don't support it
sd: Fix excessive capacity printing on devices with blocks bigger than 512 bytes
scsi_dh_alua: Fix a recently introduced deadlock
scsi: Declare local symbols static
cxlflash: Move to exponential back-off when cmd_room is not available
cxlflash: Fix regression issue with re-ordering patch
mpt3sas: Don't overreach ioc->reply_post[] during initialization
aacraid: add missing curly braces
Linus Torvalds [Sat, 9 Apr 2016 18:23:27 +0000 (11:23 -0700)]
Merge tag 'md/4.6-rc2-fix' of git://git./linux/kernel/git/shli/md
Pull MD fixes from Shaohua Li:
"This update mainly fixes bugs:
- fix error handling (Guoqing)
- fix a crash when a disk is hotremoved (me)
- fix a dead loop (Wei Fang)"
* tag 'md/4.6-rc2-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md/bitmap: clear bitmap if bitmap_create failed
MD: add rdev reference for super write
md: fix a trivial typo in comments
md:raid1: fix a dead loop when read from a WriteMostly disk
Linus Torvalds [Sat, 9 Apr 2016 18:03:48 +0000 (11:03 -0700)]
Merge tag 'pm+acpi-4.6-rc3' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"Fixes for some issues discovered after recent changes and for some
that have just been found lately regardless of those changes
(intel_pstate, intel_idle, PM core, mailbox/pcc, turbostat) plus
support for some new CPU models (intel_idle, Intel RAPL driver,
turbostat) and documentation updates (intel_pstate, PM core).
Specifics:
- intel_pstate fixes for two issues exposed by the recent switch over
from using timers and for one issue introduced during the 4.4 cycle
plus new comments describing data structures used by the driver
(Rafael Wysocki, Srinivas Pandruvada).
- intel_idle fixes related to CPU offline/online (Richard Cochran).
- intel_idle support (new CPU IDs and state definitions mostly) for
Skylake-X and Kabylake processors (Len Brown).
- PCC mailbox driver fix for an out-of-bounds memory access that may
cause the kernel to panic() (Shanker Donthineni).
- New (missing) CPU ID for one apparently overlooked Haswell model in
the Intel RAPL power capping driver (Srinivas Pandruvada).
- Fix for the PM core's wakeup IRQs framework to make it work after
wakeup settings reconfiguration from sysfs (Grygorii Strashko).
- Runtime PM documentation update to make it describe what needs to
be done during device removal more precisely (Krzysztof Kozlowski).
- Stale comment removal cleanup in the cpufreq-dt driver (Viresh
Kumar).
- turbostat utility fixes and support for Broxton, Skylake-X and
Kabylake processors (Len Brown)"
* tag 'pm+acpi-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (28 commits)
PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs
tools/power turbostat: work around RC6 counter wrap
tools/power turbostat: initial KBL support
tools/power turbostat: initial SKX support
tools/power turbostat: decode BXT TSC frequency via CPUID
tools/power turbostat: initial BXT support
tools/power turbostat: print IRTL MSRs
tools/power turbostat: SGX state should print only if --debug
intel_idle: Add KBL support
intel_idle: Add SKX support
intel_idle: Clean up all registered devices on exit.
intel_idle: Propagate hot plug errors.
intel_idle: Don't overreact to a cpuidle registration failure.
intel_idle: Setup the timer broadcast only on successful driver load.
intel_idle: Avoid a double free of the per-CPU data.
intel_idle: Fix dangling registration on error path.
intel_idle: Fix deallocation order on the driver exit path.
intel_idle: Remove redundant initialization calls.
intel_idle: Fix a helper function's return value.
intel_idle: remove useless return from void function.
...
Linus Torvalds [Sat, 9 Apr 2016 17:50:44 +0000 (10:50 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Stale SKB data pointer access across pskb_may_pull() calls in L2TP,
from Haishuang Yan.
2) Fix multicast frame handling in mac80211 AP code, from Felix
Fietkau.
3) mac80211 station hashtable insert errors not handled properly, fix
from Johannes Berg.
4) Fix TX descriptor count limit handling in e1000, from Alexander
Duyck.
5) Revert a buggy netdev refcount fix in netpoll, from Bjorn Helgaas.
6) Must assign rtnl_link_ops of the device before registering it, fix
in ip6_tunnel from Thadeu Lima de Souza Cascardo.
7) Memory leak fix in tc action net exit, from WANG Cong.
8) Add missing AF_KCM entries to name tables, from Dexuan Cui.
9) Fix regression in GRE handling of csums wrt. FOU, from Alexander
Duyck.
10) Fix memory allocation alignment and congestion map corruption in
RDS, from Shamir Rabinovitch.
11) Fix default qdisc regression in tuntap driver, from Jason Wang.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
bridge, netem: mark mailing lists as moderated
tuntap: restore default qdisc
mpls: find_outdev: check for err ptr in addition to NULL check
ipv6: Count in extension headers in skb->network_header
RDS: fix congestion map corruption for PAGE_SIZE > 4k
RDS: memory allocated must be align to 8
GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU
net: add the AF_KCM entries to family name tables
MAINTAINERS: intel-wired-lan list is moderated
lib/test_bpf: Add additional BPF_ADD tests
lib/test_bpf: Add test to check for result of 32-bit add that overflows
lib/test_bpf: Add tests for unsigned BPF_JGT
lib/test_bpf: Fix JMP_JSET tests
VSOCK: Detach QP check should filter out non matching QPs.
stmmac: fix adjust link call in case of a switch is attached
af_packet: tone down the Tx-ring unsupported spew.
net_sched: fix a memory leak in tc action
samples/bpf: Enable powerpc support
samples/bpf: Use llc in PATH, rather than a hardcoded value
samples/bpf: Fix build breakage with map_perf_test_user.c
...
Linus Torvalds [Sat, 9 Apr 2016 17:41:34 +0000 (10:41 -0700)]
Merge branch 'for-linus-4.6' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"These are bug fixes, including a really old fsync bug, and a few trace
points to help us track down problems in the quota code"
* 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix file/data loss caused by fsync after rename and new inode
btrfs: Reset IO error counters before start of device replacing
btrfs: Add qgroup tracing
Btrfs: don't use src fd for printk
btrfs: fallback to vmalloc in btrfs_compare_tree
btrfs: handle non-fatal errors in btrfs_qgroup_inherit()
btrfs: Output more info for enospc_debug mount option
Btrfs: fix invalid reference in replace_path
Btrfs: Improve FL_KEEP_SIZE handling in fallocate
Linus Torvalds [Sat, 9 Apr 2016 17:33:58 +0000 (10:33 -0700)]
Merge tag 'for-linus-4.6-ofs1' of git://git./linux/kernel/git/hubcap/linux
Pull orangefs fixes from Mike Marshall:
"Orangefs cleanups and a strncpy vulnerability fix.
Cleanups:
- remove an unused variable from orangefs_readdir.
- clean up printk wrapper used for ofs "gossip" debugging.
- clean up truncate ctime and mtime setting in inode.c
- remove a useless null check found by coccinelle.
- optimize some memcpy/memset boilerplate code.
- remove some useless sanity checks from xattr.c
Fix:
- fix a potential strncpy vulnerability"
* tag 'for-linus-4.6-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
orangefs: remove unused variable
orangefs: Add KERN_<LEVEL> to gossip_<level> macros
orangefs: strncpy -> strscpy
orangefs: clean up truncate ctime and mtime setting
Orangefs: fix ifnullfree.cocci warnings
Orangefs: optimize boilerplate code.
Orangefs: xattr.c cleanup
Linus Torvalds [Sat, 9 Apr 2016 17:23:45 +0000 (10:23 -0700)]
Merge tag 'iommu-fixes-v4.6-rc2' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- compile-time fixes (warnings and failures)
- a bug in iommu core code which could cause the group->domain pointer
to be falsly cleared
- fix in scatterlist handling of the ARM common DMA-API code
- stall detection fix for the Rockchip IOMMU driver
* tag 'iommu-fixes-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Silence an uninitialized variable warning
iommu/rockchip: Fix "is stall active" check
iommu: Don't overwrite domain pointer when there is no default_domain
iommu/dma: Restore scatterlist offsets correctly
iommu: provide of_xlate pointer unconditionally
Wolfram Sang [Sun, 3 Apr 2016 21:32:00 +0000 (23:32 +0200)]
i2c: jz4780: really prevent potential division by zero
Make sure we avoid a division-by-zero OOPS in case clock-frequency is
set too low in DT. Add missing '\n' while we are here.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Axel Lin <axel.lin@ingics.com>
Wolfram Sang [Sat, 9 Apr 2016 06:32:37 +0000 (08:32 +0200)]
Revert "i2c: jz4780: prevent potential division by zero"
This reverts commit
34cf2acdafaa31a13821e45de5ee896adcd307b1. 'ret' is
not set when bailing out. Also, there is a better place to check for 0.
Reported-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Greg Kroah-Hartman [Fri, 8 Apr 2016 22:41:58 +0000 (15:41 -0700)]
Merge tag 'usb-serial-4.6-rc3' of git://git./linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.6-rc3
Here are some new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
David S. Miller [Fri, 8 Apr 2016 20:41:28 +0000 (16:41 -0400)]
Merge tag 'mac80211-for-davem-2016-04-06' of git://git./linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
For the current RC series, we have the following fixes:
* TDLS fixes from Arik and Ilan
* rhashtable fixes from Ben and myself
* documentation fixes from Luis
* U-APSD fixes from Emmanuel
* a TXQ fix from Felix
* and a compiler warning suppression from Jeff
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Tue, 5 Apr 2016 20:43:53 +0000 (13:43 -0700)]
bridge, netem: mark mailing lists as moderated
I moderate these (lightly loaded) lists to block spam.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Helge Deller [Fri, 8 Apr 2016 19:36:06 +0000 (21:36 +0200)]
parisc: Update comment regarding relative extable support
Update the comment to reflect the changes of commit
0de7985 (parisc: Use
generic extable search and sort routines).
Signed-off-by: Helge Deller <deller@gmx.de>
Helge Deller [Fri, 8 Apr 2016 16:32:52 +0000 (18:32 +0200)]
parisc: Unbreak handling exceptions from kernel modules
Handling exceptions from modules never worked on parisc.
It was just masked by the fact that exceptions from modules
don't happen during normal use.
When a module triggers an exception in get_user() we need to load the
main kernel dp value before accessing the exception_data structure, and
afterwards restore the original dp value of the module on exit.
Noticed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
Helge Deller [Fri, 8 Apr 2016 16:18:48 +0000 (18:18 +0200)]
parisc: Fix kernel crash with reversed copy_from_user()
The kernel module testcase (lib/test_user_copy.c) exhibited a kernel
crash on parisc if the parameters for copy_from_user were reversed
("illegal reversed copy_to_user" testcase).
Fix this potential crash by checking the fault handler if the faulting
address is in the exception table.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>
Helge Deller [Fri, 8 Apr 2016 16:11:33 +0000 (18:11 +0200)]
parisc: Avoid function pointers for kernel exception routines
We want to avoid the kernel module loader to create function pointers
for the kernel fixup routines of get_user() and put_user(). Changing
the external reference from function type to int type fixes this.
This unbreaks exception handling for get_user() and put_user() when
called from a kernel module.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
Helge Deller [Fri, 8 Apr 2016 20:10:35 +0000 (22:10 +0200)]
parisc: Handle R_PARISC_PCREL32 relocations in kernel modules
Commit
0de7985 (parisc: Use generic extable search and sort routines)
changed the exception tables to use 32bit relative offsets.
This patch now adds support to the kernel module loader to handle such
R_PARISC_PCREL32 relocations for 32- and 64-bit modules.
Signed-off-by: Helge Deller <deller@gmx.de>
Jason Wang [Fri, 8 Apr 2016 05:26:48 +0000 (13:26 +0800)]
tuntap: restore default qdisc
After commit
f84bb1eac027 ("net: fix IFF_NO_QUEUE for drivers using
alloc_netdev"), default qdisc was changed to noqueue because
tuntap does not set tx_queue_len during .setup(). This patch restores
default qdisc by setting tx_queue_len in tun_setup().
Fixes:
f84bb1eac027 ("net: fix IFF_NO_QUEUE for drivers using alloc_netdev")
Cc: Phil Sutter <phil@nwl.cc>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Martin Brandenburg [Mon, 4 Apr 2016 20:26:38 +0000 (16:26 -0400)]
orangefs: remove unused variable
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Rafael J. Wysocki [Fri, 8 Apr 2016 19:46:56 +0000 (21:46 +0200)]
Merge branches 'pm-core', 'powercap' and 'pm-tools'
* pm-core:
PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs
PM / runtime: Document steps for device removal
* powercap:
powercap: intel_rapl: Add missing Haswell model
* pm-tools:
tools/power turbostat: work around RC6 counter wrap
tools/power turbostat: initial KBL support
tools/power turbostat: initial SKX support
tools/power turbostat: decode BXT TSC frequency via CPUID
tools/power turbostat: initial BXT support
tools/power turbostat: print IRTL MSRs
tools/power turbostat: SGX state should print only if --debug
Rafael J. Wysocki [Fri, 8 Apr 2016 19:46:05 +0000 (21:46 +0200)]
Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'acpi-cppc'
* pm-cpufreq:
cpufreq: dt: Drop stale comment
cpufreq: intel_pstate: Documenation for structures
cpufreq: intel_pstate: fix inconsistency in setting policy limits
intel_pstate: Avoid extra invocation of intel_pstate_sample()
intel_pstate: Do not set utilization update hook too early
* pm-cpuidle:
intel_idle: Add KBL support
intel_idle: Add SKX support
intel_idle: Clean up all registered devices on exit.
intel_idle: Propagate hot plug errors.
intel_idle: Don't overreact to a cpuidle registration failure.
intel_idle: Setup the timer broadcast only on successful driver load.
intel_idle: Avoid a double free of the per-CPU data.
intel_idle: Fix dangling registration on error path.
intel_idle: Fix deallocation order on the driver exit path.
intel_idle: Remove redundant initialization calls.
intel_idle: Fix a helper function's return value.
intel_idle: remove useless return from void function.
* acpi-cppc:
mailbox: pcc: Don't access an unmapped memory address space
Joe Perches [Sun, 27 Mar 2016 21:34:52 +0000 (14:34 -0700)]
orangefs: Add KERN_<LEVEL> to gossip_<level> macros
Emit the logging messages at the appropriate levels.
Miscellanea:
o Change format to fmt
o Use the more common ##__VA_ARGS__
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Martin Brandenburg [Fri, 8 Apr 2016 17:33:21 +0000 (13:33 -0400)]
orangefs: strncpy -> strscpy
It would have been possible for a rogue client-core to send in a symlink
target which is not NUL terminated. This returns EIO if the client-core
gives us corrupt data.
Leave debugfs and superblock code as is for now.
Other dcache.c and namei.c strncpy instances are safe because
ORANGEFS_NAME_MAX = NAME_MAX + 1; there is always enough space for a
name plus a NUL byte.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Martin Brandenburg [Mon, 4 Apr 2016 20:26:36 +0000 (16:26 -0400)]
orangefs: clean up truncate ctime and mtime setting
The ctime and mtime are always updated on a successful ftruncate and
only updated on a successful truncate where the size changed.
We handle the ``if the size changed'' bit.
This matches FUSE's behavior.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
kbuild test robot [Sat, 26 Mar 2016 18:54:23 +0000 (02:54 +0800)]
Orangefs: fix ifnullfree.cocci warnings
fs/orangefs/orangefs-debugfs.c:130:2-26: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values.
NULL check before some freeing functions is not needed.
Based on checkpatch warning
"kfree(NULL) is safe this check is probably not required"
and kfreeaddr.cocci by Julia Lawall.
Generated by: scripts/coccinelle/free/ifnullfree.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Mike Marshall [Wed, 6 Apr 2016 15:19:37 +0000 (11:19 -0400)]
Orangefs: optimize boilerplate code.
Suggested by David Binderman <dcb314@hotmail.com>
The former can potentially be a performance win over the latter.
memcpy(d, s, len);
memset(d+len, c, size-len);
memset(d, c, size);
memcpy(d, s, len);
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Mike Marshall [Wed, 6 Apr 2016 14:52:38 +0000 (10:52 -0400)]
Orangefs: xattr.c cleanup
1. It is nonsense to test for negative size_t, suggested by
David Binderman <dcb314@hotmail.com>
2. By the time Orangefs gets called, the vfs has ensured that
name != NULL, and that buffer and size are sane.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Roopa Prabhu [Fri, 8 Apr 2016 04:28:38 +0000 (21:28 -0700)]
mpls: find_outdev: check for err ptr in addition to NULL check
find_outdev calls inet{,6}_fib_lookup_dev() or dev_get_by_index() to
find the output device. In case of an error, inet{,6}_fib_lookup_dev()
returns error pointer and dev_get_by_index() returns NULL. But the function
only checks for NULL and thus can end up calling dev_put on an ERR_PTR.
This patch adds an additional check for err ptr after the NULL check.
Before: Trying to add an mpls route with no oif from user, no available
path to 10.1.1.8 and no default route:
$ip -f mpls route add 100 as 200 via inet 10.1.1.8
[ 822.337195] BUG: unable to handle kernel NULL pointer dereference at
00000000000003a3
[ 822.340033] IP: [<
ffffffff8148781e>] mpls_nh_assign_dev+0x10b/0x182
[ 822.340033] PGD
1db38067 PUD
1de9e067 PMD 0
[ 822.340033] Oops: 0000 [#1] SMP
[ 822.340033] Modules linked in:
[ 822.340033] CPU: 0 PID: 11148 Comm: ip Not tainted 4.5.0-rc7+ #54
[ 822.340033] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS
rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org
04/01/2014
[ 822.340033] task:
ffff88001db82580 ti:
ffff88001dad4000 task.ti:
ffff88001dad4000
[ 822.340033] RIP: 0010:[<
ffffffff8148781e>] [<
ffffffff8148781e>]
mpls_nh_assign_dev+0x10b/0x182
[ 822.340033] RSP: 0018:
ffff88001dad7a88 EFLAGS:
00010282
[ 822.340033] RAX:
ffffffffffffff9b RBX:
ffffffffffffff9b RCX:
0000000000000002
[ 822.340033] RDX:
00000000ffffff9b RSI:
0000000000000008 RDI:
0000000000000000
[ 822.340033] RBP:
ffff88001ddc9ea0 R08:
ffff88001e9f1768 R09:
0000000000000000
[ 822.340033] R10:
ffff88001d9c1100 R11:
ffff88001e3c89f0 R12:
ffffffff8187e0c0
[ 822.340033] R13:
ffffffff8187e0c0 R14:
ffff88001ddc9e80 R15:
0000000000000004
[ 822.340033] FS:
00007ff9ed798700(0000) GS:
ffff88001fc00000(0000)
knlGS:
0000000000000000
[ 822.340033] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 822.340033] CR2:
00000000000003a3 CR3:
000000001de89000 CR4:
00000000000006f0
[ 822.340033] Stack:
[ 822.340033]
0000000000000000 0000000100000000 0000000000000000
0000000000000000
[ 822.340033]
0000000000000000 0801010a00000000 0000000000000000
0000000000000000
[ 822.340033]
0000000000000004 ffffffff8148749b ffffffff8187e0c0
000000000000001c
[ 822.340033] Call Trace:
[ 822.340033] [<
ffffffff8148749b>] ? mpls_rt_alloc+0x2b/0x3e
[ 822.340033] [<
ffffffff81488e66>] ? mpls_rtm_newroute+0x358/0x3e2
[ 822.340033] [<
ffffffff810e7bbc>] ? get_page+0x5/0xa
[ 822.340033] [<
ffffffff813b7d94>] ? rtnetlink_rcv_msg+0x17e/0x191
[ 822.340033] [<
ffffffff8111794e>] ? __kmalloc_track_caller+0x8c/0x9e
[ 822.340033] [<
ffffffff813c9393>] ?
rht_key_hashfn.isra.20.constprop.57+0x14/0x1f
[ 822.340033] [<
ffffffff813b7c16>] ? __rtnl_unlock+0xc/0xc
[ 822.340033] [<
ffffffff813cb794>] ? netlink_rcv_skb+0x36/0x82
[ 822.340033] [<
ffffffff813b4507>] ? rtnetlink_rcv+0x1f/0x28
[ 822.340033] [<
ffffffff813cb2b1>] ? netlink_unicast+0x106/0x189
[ 822.340033] [<
ffffffff813cb5b3>] ? netlink_sendmsg+0x27f/0x2c8
[ 822.340033] [<
ffffffff81392ede>] ? sock_sendmsg_nosec+0x10/0x1b
[ 822.340033] [<
ffffffff81393df1>] ? ___sys_sendmsg+0x182/0x1e3
[ 822.340033] [<
ffffffff810e4f35>] ?
__alloc_pages_nodemask+0x11c/0x1e4
[ 822.340033] [<
ffffffff8110619c>] ? PageAnon+0x5/0xd
[ 822.340033] [<
ffffffff811062fe>] ? __page_set_anon_rmap+0x45/0x52
[ 822.340033] [<
ffffffff810e7bbc>] ? get_page+0x5/0xa
[ 822.340033] [<
ffffffff810e85ab>] ? __lru_cache_add+0x1a/0x3a
[ 822.340033] [<
ffffffff81087ea9>] ? current_kernel_time64+0x9/0x30
[ 822.340033] [<
ffffffff813940c4>] ? __sys_sendmsg+0x3c/0x5a
[ 822.340033] [<
ffffffff8148f597>] ?
entry_SYSCALL_64_fastpath+0x12/0x6a
[ 822.340033] Code: 83 08 04 00 00 65 ff 00 48 8b 3c 24 e8 40 7c f2 ff
eb 13 48 c7 c3 9f ff ff ff eb 0f 89 ce e8 f1 ae f1 ff 48 89 c3 48 85 db
74 15 <48> 8b 83 08 04 00 00 65 ff 08 48 81 fb 00 f0 ff ff 76 0d eb 07
[ 822.340033] RIP [<
ffffffff8148781e>] mpls_nh_assign_dev+0x10b/0x182
[ 822.340033] RSP <
ffff88001dad7a88>
[ 822.340033] CR2:
00000000000003a3
[ 822.435363] ---[ end trace
98cc65e6f6b8bf11 ]---
After patch:
$ip -f mpls route add 100 as 200 via inet 10.1.1.8
RTNETLINK answers: Network is unreachable
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yong Li [Wed, 30 Mar 2016 06:49:14 +0000 (14:49 +0800)]
gpio: pca953x: Use correct u16 value for register word write
The current implementation only uses the first byte in val,
the second byte is always 0. Change it to use cpu_to_le16
to write the two bytes into the register
Cc: stable@vger.kernel.org
Signed-off-by: Yong Li <sdliyong@gmail.com>
Reviewed-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Guenter Roeck [Thu, 31 Mar 2016 15:11:30 +0000 (08:11 -0700)]
gpiolib: Defer gpio device setup until after gpiolib initialization
Since commit
ff2b13592299 ("gpio: make the gpiochip a real device"),
attempts to add a gpio chip prior to gpiolib initialization cause
the system to crash. This happens because gpio_bus_type has not been
registered yet. Defer creating gpio devices until after gpiolib has
been initialized to fix the problem.
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Fixes:
ff2b13592299 ("gpio: make the gpiochip a real device")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Guenter Roeck [Thu, 31 Mar 2016 15:11:29 +0000 (08:11 -0700)]
gpiolib: Do not use devm functions when registering gpio chip
It is possible that a gpio chip is registered before the gpiolib
initialization code has run. This means we can not use devm_ functions
to allocate memory at that time. Do it the old fashioned way.
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Robert Jarzmik [Tue, 29 Mar 2016 08:04:00 +0000 (10:04 +0200)]
gpio: pxa: fix legacy non pinctrl aware builds
In legacy pxa builds, ie. non device-tree and platform-data only builds,
pinctrl is not yet available. As a consequence, the pinctrl gpio
direction change function is a stub, returning always success.
In the current state, the gpio driver direction function believes the
pinctrl direction change was successful, and exits without actually
changing the gpio direction.
This patch changes the logic :
- if the pinctrl direction function fails, gpio direction will report
that failure
- if the pinctrl direction function succeeds, gpio direction is changed
by the gpio driver anyway.
This is sub optimal in the pinctrl aware case, as the gpio direction
will be changed twice: once by pinctrl function and another time by
the gpio direction function.
Yet it should be acceptable in this form, as this is functional for all
pxa platforms (device-tree and platform-data), and moreover changing a
gpio direction is very very seldom, usually in machine initialization,
seldom in drivers probe, and an exception for ac97 reset bug.
Fixes:
a770d946371e ("gpio: pxa: add pin control gpio direction and request")
Reported-by: Guenter Roeck <guenter@roeck-us.net>
Tested-by: Guenter Roeck <guenter@roeck-us.net>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Dmitry Torokhov [Thu, 24 Mar 2016 17:50:25 +0000 (10:50 -0700)]
gpio / ACPI: ignore GpioInt() GPIOs when requesting GPIO_OUT_*
When firmware does not use _DSD properties that allow properly name GPIO
resources, the kernel falls back on parsing _CRS resources, and will
return entries described as GpioInt() as general purpose GPIOs even
though they are meant to be used simply as interrupt sources for the
device:
Device (ETSA)
{
Name (_HID, "ELAN0001")
...
Method(_CRS, 0x0, NotSerialized)
{
Name(BUF0,ResourceTemplate ()
{
I2CSerialBus(
0x10, /* SlaveAddress */
ControllerInitiated, /* SlaveMode */
400000, /* ConnectionSpeed */
AddressingMode7Bit, /* AddressingMode */
"\\_SB.I2C1", /* ResourceSource */
)
GpioInt (Edge, ActiveLow, ExclusiveAndWake, PullNone,,
"\\_SB.GPSW") { BOARD_TOUCH_GPIO_INDEX }
} )
Return (BUF0)
}
...
}
This gives troubles with drivers such as Elan Touchscreen driver
(elants_i2c) that uses devm_gpiod_get to look up "reset" GPIO line and
decide whether the driver is responsible for powering up and resetting
the device, or firmware is. In the above case the lookup succeeds, we
map GPIO as output and later fail to request client->irq interrupt that
is mapped to the same GPIO.
Let's ignore resources described as GpioInt() while parsing _CRS when
requesting output GPIOs (but allow them when requesting GPIOD_ASIS or
GPIOD_IN as some drivers, such as i2c-hid, do request GPIO as input and
then map it to interrupt with gpiod_to_irq).
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Dan Williams [Fri, 8 Apr 2016 03:02:06 +0000 (20:02 -0700)]
libnvdimm, pfn: fix nvdimm_namespace_add_poison() vs section alignment
When section alignment padding is in effect we need to shift / truncate
the range that is queried for poison by the 'start_pad' or 'end_trunc'
reservations.
It's easiest if we just pass in an adjusted resource range rather than
deriving it from the passed in namespace. With the resource range
resolution pushed out to the caller we can also push the
namespace-to-region lookup to the caller and drop the implicit pmem-type
assumption about the passed in namespace object.
Cc: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 8 Apr 2016 02:59:27 +0000 (19:59 -0700)]
libnvdimm, pfn: fix uuid validation
If we detect a namespace has a stale info block in the init path, we
should overwrite with the latest configuration. In fact, we already
return -ENODEV when the parent uuid is invalid, the same should be done
for the 'self' uuid. Otherwise we can get into a condition where
userspace is unable to reconfigure the pfn-device without directly /
manually invalidating the info block.
Cc: <stable@vger.kernel.org>
Reported-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 8 Apr 2016 02:58:44 +0000 (19:58 -0700)]
libnvdimm: fix smart data retrieval
It appears that smart data retrieval has been broken the since the
initial implementation. Fix the payload size to be 128-bytes per the
specification.
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Jakub Sitnicki [Tue, 5 Apr 2016 16:41:08 +0000 (18:41 +0200)]
ipv6: Count in extension headers in skb->network_header
When sending a UDPv6 message longer than MTU, account for the length
of fragmentable IPv6 extension headers in skb->network_header offset.
Same as we do in alloc_new_skb path in __ip6_append_data().
This ensures that later on __ip6_make_skb() will make space in
headroom for fragmentable extension headers:
/* move skb->data to ip header from ext header */
if (skb->data < skb_network_header(skb))
__skb_pull(skb, skb_network_offset(skb));
Prevents a splat due to skb_under_panic:
skbuff: skb_under_panic: text:
ffffffff8143397b len:2126 put:14 \
head:
ffff880005bacf50 data:
ffff880005bacf4a tail:0x48 end:0xc0 dev:lo
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:104!
invalid opcode: 0000 [#1] KASAN
CPU: 0 PID: 160 Comm: reproducer Not tainted 4.6.0-rc2 #65
[...]
Call Trace:
[<
ffffffff813eb7b9>] skb_push+0x79/0x80
[<
ffffffff8143397b>] eth_header+0x2b/0x100
[<
ffffffff8141e0d0>] neigh_resolve_output+0x210/0x310
[<
ffffffff814eab77>] ip6_finish_output2+0x4a7/0x7c0
[<
ffffffff814efe3a>] ip6_output+0x16a/0x280
[<
ffffffff815440c1>] ip6_local_out+0xb1/0xf0
[<
ffffffff814f1115>] ip6_send_skb+0x45/0xd0
[<
ffffffff81518836>] udp_v6_send_skb+0x246/0x5d0
[<
ffffffff8151985e>] udpv6_sendmsg+0xa6e/0x1090
[...]
Reported-by: Ji Jianwen <jiji@redhat.com>
Signed-off-by: Jakub Sitnicki <jkbs@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bart Van Assche [Thu, 7 Apr 2016 22:55:04 +0000 (15:55 -0700)]
Revert "ib_srpt: Convert to percpu_ida tag allocation"
This reverts commit
0fd10721fe3664f7549e74af9d28a509c9a68719.
That patch causes the ib_srpt driver to crash as soon as the first SCSI
command is received:
kernel BUG at drivers/infiniband/ulp/srpt/ib_srpt.c:1439!
invalid opcode: 0000 [#1] SMP
Workqueue: target_completion target_complete_ok_work [target_core_mod]
RIP: srpt_queue_response+0x437/0x4a0 [ib_srpt]
Call Trace:
srpt_queue_data_in+0x9/0x10 [ib_srpt]
target_complete_ok_work+0x152/0x2b0 [target_core_mod]
process_one_work+0x197/0x480
worker_thread+0x49/0x490
kthread+0xea/0x100
ret_from_fork+0x22/0x40
Aside from the crash, the shortcomings of that patch are as follows:
- It makes the ib_srpt driver use I/O contexts allocated by
transport_alloc_session_tags() but it does not initialize these I/O
contexts properly. All the initializations performed by
srpt_alloc_ioctx() are skipped.
- It swaps the order of the send ioctx allocation and the transition to
RTR mode which is wrong.
- The amount of memory that is needed for I/O contexts is doubled.
- srpt_rdma_ch.free_list is no longer used but is not removed.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 8 Apr 2016 00:22:20 +0000 (17:22 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4
Pull ext4 bugfixes from Ted Ts'o:
"These changes contains a fix for overlayfs interacting with some
(badly behaved) dentry code in various file systems. These have been
reviewed by Al and the respective file system mtinainers and are going
through the ext4 tree for convenience.
This also has a few ext4 encryption bug fixes that were discovered in
Android testing (yes, we will need to get these sync'ed up with the
fs/crypto code; I'll take care of that). It also has some bug fixes
and a change to ignore the legacy quota options to allow for xfstests
regression testing of ext4's internal quota feature and to be more
consistent with how xfs handles this case"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: ignore quota mount options if the quota feature is enabled
ext4 crypto: fix some error handling
ext4: avoid calling dquot_get_next_id() if quota is not enabled
ext4: retry block allocation for failed DIO and DAX writes
ext4: add lockdep annotations for i_data_sem
ext4: allow readdir()'s of large empty directories to be interrupted
btrfs: fix crash/invalid memory access on fsync when using overlayfs
ext4 crypto: use dget_parent() in ext4_d_revalidate()
ext4: use file_dentry()
ext4: use dget_parent() in ext4_file_open()
nfs: use file_dentry()
fs: add file_dentry()
ext4 crypto: don't let data integrity writebacks fail with ENOMEM
ext4: check if in-inode xattr is corrupted in ext4_expand_extra_isize_ea()
Linus Torvalds [Thu, 7 Apr 2016 23:34:26 +0000 (16:34 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
Pull Ceph fix from Sage Weil:
"This just fixes a few remaining memory allocations in RBD to use
GFP_NOIO instead of GFP_ATOMIC"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
rbd: use GFP_NOIO consistently for request allocations
Linus Torvalds [Thu, 7 Apr 2016 23:20:40 +0000 (16:20 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio/qemu fixes from Michael S Tsirkin:
"A couple of fixes for virtio and for the new QEMU fw cfg driver"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio: add VIRTIO_CONFIG_S_NEEDS_RESET device status bit
MAINTAINERS: add entry for QEMU
firmware: qemu_fw_cfg.c: hold ACPI global lock during device access
virtio: virtio 1.0 cs04 spec compliance for reset
qemu_fw_cfg: don't leak kobj on init error
Linus Torvalds [Thu, 7 Apr 2016 22:53:19 +0000 (15:53 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"This is mostly amdgpu/radeon fixes, and imx related fixes.
There is also one one TTM fix, one nouveau fix, and one hdlcd fix.
The AMD ones are some fixes for power management after suspend/resume
one some GPUs, and some vblank fixes.
The IMX ones are for more stricter plane checks and some cleanups.
I'm off until Monday, so therre might be some fixes early next week if
anyone missed me"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (34 commits)
drm/nouveau/tegra: acquire and enable reference clock if needed
drm/amdgpu: total vram size also reduces pin size
drm/amd/powerplay: add uvd/vce dpm enabling flag default.
drm/amd/powerplay: fix issue that resume back, dpm can't work on FIJI.
drm/amdgpu: save and restore the firwmware cache part when suspend resume
drm/amdgpu: save and restore UVD context with suspend and resume
drm/ttm: use phys_addr_t for ttm_bus_placement
drm: ARM HDLCD - fix an error code
drm: ARM HDLCD - get rid of devm_clk_put()
drm/radeon: Only call drm_vblank_on/off between drm_vblank_init/cleanup
drm/amdgpu: fence wait old rcu slot
drm/amdgpu: fix leaking fence in the pageflip code
drm/amdgpu: print vram type rather than just DDR
drm/amdgpu/gmc: use proper register for vram type on Fiji
drm/amdgpu/gmc: move vram type fetching into sw_init
drm/amdgpu: Set vblank_disable_allowed = true
drm/radeon: Set vblank_disable_allowed = true
drm/amd/powerplay: Need to change boot to performance state in resume.
drm/amd/powerplay: add new Fiji function for not setting same ps.
drm/amdgpu: check dpm state before pm system fs initialized.
...