- 11 Dec, 2018 16 commits
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Javier González authored
pblk's recovery path is single threaded and therefore a number of assumptions regarding concurrency can be made. To avoid confusion, make this explicit with a couple of comments in the code. Signed-off-by:
Javier González <javier@cnexlabs.com> Signed-off-by:
Matias Bjørling <mb@lightnvm.io> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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Hua Su authored
Protect the list_add on the pblk_line_init_bb() error path in case this code is used for some other purpose in the future. Signed-off-by:
Hua Su <suhua.tanke@gmail.com> Reviewed-by:
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Hua Su authored
Signed-off-by:
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Hans Holmberg authored
Remove the call to pblk_line_replace_data as it returns directly because we have not set l_mg->data_next yet. Signed-off-by:
Hans Holmberg <hans.holmberg@cnexlabs.com> Reviewed-by:
Javier González <javier@javigon.com> Signed-off-by:
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Hans Holmberg authored
The chunk metadata is allocated with vmalloc, so we need to use vfree to free it. Fixes: 090ee26f ("lightnvm: use internal allocation for chunk log page") Signed-off-by:
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Hans Holmberg authored
ADDR_POOL_SIZE is not used anymore, so remove the macro. Signed-off-by:
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Hans Holmberg authored
In a worst-case scenario (random writes), OP% of sectors in each line will be invalid, and we will then need to move data out of 100/OP% lines to free a single line. So, to prevent the possibility of running out of lines, temporarily block user writes when there is less than 100/OP% free lines. Also ensure that pblk creation does not produce instances with insufficient over provisioning. Insufficient over-provising is not a problem on real hardware, but often an issue when running QEMU simulations (with few lines). 100 lines is enough to create a sane instance with the standard (11%) over provisioning. Signed-off-by:
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Hans Holmberg authored
If mapping fails (i.e. when running out of lines), handle the error and stop writing. Signed-off-by:
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Hans Holmberg authored
Lines inflicted with write errors lines might be recovered if they have not been recycled after write error garbage collection. Ensure that the emeta accounting of valid lbas is correct for such lines to avoid recovery inconsistencies. Signed-off-by:
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Hans Holmberg authored
Make sure we only look up valid lba addresses on the resubmission path. If an lba is invalidated in the write buffer, that sector will be submitted to disk (as it is already mapped to a ppa), and that write might fail, resulting in a crash when trying to look up the lba in the mapping table (as the lba is marked as invalid). Signed-off-by:
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Hans Holmberg authored
The check for chunk closes suffers from an off-by-one issue, leading to chunk close events not being traced. Fixes: 4c44abf4 ("lightnvm: pblk: add trace events for chunk states") Signed-off-by:
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Geert Uytterhoeven authored
With gcc 4.1: drivers/lightnvm/core.c: In function ‘nvm_get_bb_meta’: drivers/lightnvm/core.c:977: warning: ‘ret’ may be used uninitialized in this function and drivers/nvme/host/lightnvm.c: In function ‘nvme_nvm_get_chk_meta’: drivers/nvme/host/lightnvm.c:580: warning: ‘ret’ may be used uninitialized in this function Indeed, if (for the former) the number of channels or LUNs is zero, or (for both) the passed number of chunks is zero, ret will be returned uninitialized. Fix this by preinitializing ret to zero. Fixes: aff3fb18 ("lightnvm: move bad block and chunk state logic to core") Fixes: a294c199 ("lightnvm: implement get log report chunk helpers") Signed-off-by:Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Zhoujie Wu authored
The smeta area l2p mapping is empty, and actually the recovery procedure only need to restore data sector's l2p mapping. So ignore the smeta oob scan. Signed-off-by:
Zhoujie Wu <zjwu@marvell.com> Reviewed-by:
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Mike Snitzer authored
The md->wait waitqueue is used by both bio-based and request-based DM. Commit dbd3bbd2 ("dm rq: leverage blk_mq_queue_busy() to check for outstanding IO") lost sight of the requirement that dm_wait_for_completion() must work with all types of DM devices. Fix md_in_flight() to call the blk-mq or bio-based method accordingly. Fixes: dbd3bbd2 ("dm rq: leverage blk_mq_queue_busy() to check for outstanding IO") Signed-off-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
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Jens Axboe authored
Guenter reported an boot hang issue on HPPA after we default to 0 poll queues. We have two issues in the queue count calculations: 1) We don't separate the poll queues from the read/write queues. This is important, since the former doesn't need interrupts. 2) The adjust logic is broken. Adjust the poll queue count before doing nvme_calc_io_queues(). The poll queue count is only limited by the IO queue count we were able to get from the controller, not failures in the IRQ allocation loop. This leaves nvme_calc_io_queues() just adjusting the read/write queue map. Reported-by:
Reported-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Sagi Grimberg <sagi@grimberg.me> Signed-off-by:
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Jens Axboe authored
After switching to percpu inflight counters, the inflight check is totally buggy. It's perfectly valid for some counters to be non-zero while having a total inflight IO count of 0, that's how these kinds of counters work (inc on one CPU, dec on another). Fix the md_in_flight() check to sum all counters before returning a false positive, potentially. While at it, remove the inflight read for IO completion. We don't need it, just wake anyone that's waiting for the IO count to drop to zero. The caller needs to re-check that value anyway when woken, which it does. Fixes: 6f757231 ("dm: remove the pending IO accounting") Acked-by:
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- 10 Dec, 2018 11 commits
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Jens Axboe authored
For cases where we can only fail with IO in-flight, we should be using BLK_STS_DEV_RESOURCE instead of BLK_STS_RESOURCE. The latter refers to system wide resource constraints. Signed-off-by: -
Arnd Bergmann authored
The "cmd_slot_unal" semaphore is never used in a blocking way but only as an atomic counter. Change the code to using atomic_dec_if_positive() as a better API. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Mikulas Patocka authored
Remove the "pending" atomic counters, that duplicate block-core's in_flight counters, and update md_in_flight() to look at percpu in_flight counters. Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
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Mikulas Patocka authored
The previous patches deleted all the code that needed the second value returned from part_in_flight - now the kernel only uses the first value. Consequently, part_in_flight (and blk_mq_in_flight) may be changed so that it only returns one value. This patch just refactors the code, there's no functional change. Signed-off-by:
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Mikulas Patocka authored
Now when part_round_stats is gone, we can switch to per-cpu in-flight counters. We use the local-atomic type local_t, so that if part_inc_in_flight or part_dec_in_flight is reentrantly called from an interrupt, the value will be correct. The other counters could be corrupted due to reentrant interrupt, but the corruption only results in slight counter skew - the in_flight counter must be exact, so it needs local_t. Signed-off-by:
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Mikulas Patocka authored
We want to convert to per-cpu in_flight counters. The function part_round_stats needs the in_flight counter every jiffy, it would be too costly to sum all the percpu variables every jiffy, so it must be deleted. part_round_stats is used to calculate two counters - time_in_queue and io_ticks. time_in_queue can be calculated without part_round_stats, by adding the duration of the I/O when the I/O ends (the value is almost as exact as the previously calculated value, except that time for in-progress I/Os is not counted). io_ticks can be approximated by increasing the value when I/O is started or ended and the jiffies value has changed. If the I/Os take less than a jiffy, the value is as exact as the previously calculated value. If the I/Os take more than a jiffy, io_ticks can drift behind the previously calculated value. Signed-off-by:
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Mike Snitzer authored
All of part_stat_* and related methods are used with preempt disabled, so there is no need to pass cpu around to allow of them. Just call smp_processor_id() as needed. Suggested-by:
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Mike Snitzer authored
Now that request-based dm-multipath only supports blk-mq, make use of the newly introduced blk_mq_queue_busy() to check for outstanding IO -- rather than (ab)using the block core's in_flight counters. Signed-off-by:
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Mikulas Patocka authored
generic_start_io_acct and generic_end_io_acct already update the variable in_flight using atomic operations, so we don't have to overwrite them again. Signed-off-by:
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Jens Axboe authored
Pull in v4.20-rc6 to resolve the conflict in NVMe, but also to get the two corruption fixes. We're going to be overhauling the direct dispatch path, and we need to do that on top of the changes we made for that in mainline. Signed-off-by: -
Jens Axboe authored
Ming reports that lockdep spews the following trace. What this essentially says is that the sbitmap swap_lock was used inconsistently in IRQ enabled and disabled context, and that is usually indicative of a bug that will cause a deadlock. For this case, it's a false positive. The swap_lock is used from process context only, when we swap the bits in the word and cleared mask. We also end up doing that when we are getting a driver tag, from the blk_mq_mark_tag_wait(), and from there we hold the waitqueue lock with IRQs disabled. However, this isn't from an actual IRQ, it's still process context. In lieu of a better way to fix this, simply always disable interrupts when grabbing the swap_lock if lockdep is enabled. [ 100.967642] ================start test sanity/001================ [ 101.238280] null: module loaded [ 106.093735] [ 106.094012] ===================================================== [ 106.094854] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 106.095759] 4.20.0-rc3_5d2ee712_for-next+ #1 Not tainted [ 106.096551] ----------------------------------------------------- [ 106.097386] fio/1043 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 106.098231] 000000004c43fa71 (&(&sb->map[i].swap_lock)->rlock){+.+.}, at: sbitmap_get+0xd5/0x22c [ 106.099431] [ 106.099431] and this task is already holding: [ 106.100229] 000000007eec8b2f (&(&hctx->dispatch_wait_lock)->rlock){....}, at: blk_mq_dispatch_rq_list+0x4c1/0xd7c [ 106.101630] which would create a new lock dependency: [ 106.102326] (&(&hctx->dispatch_wait_lock)->rlock){....} -> (&(&sb->map[i].swap_lock)->rlock){+.+.} [ 106.103553] [ 106.103553] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 106.104580] (&sbq->ws[i].wait){..-.} [ 106.104582] [ 106.104582] ... which became SOFTIRQ-irq-safe at: [ 106.105751] _raw_spin_lock_irqsave+0x4b/0x82 [ 106.106284] __wake_up_common_lock+0x119/0x1b9 [ 106.106825] sbitmap_queue_wake_up+0x33f/0x383 [ 106.107456] sbitmap_queue_clear+0x4c/0x9a [ 106.108046] __blk_mq_free_request+0x188/0x1d3 [ 106.108581] blk_mq_free_request+0x23b/0x26b [ 106.109102] scsi_end_request+0x345/0x5d7 [ 106.109587] scsi_io_completion+0x4b5/0x8f0 [ 106.110099] scsi_finish_command+0x412/0x456 [ 106.110615] scsi_softirq_done+0x23f/0x29b [ 106.111115] blk_done_softirq+0x2a7/0x2e6 [ 106.111608] __do_softirq+0x360/0x6ad [ 106.112062] run_ksoftirqd+0x2f/0x5b [ 106.112499] smpboot_thread_fn+0x3a5/0x3db [ 106.113000] kthread+0x1d4/0x1e4 [ 106.113457] ret_from_fork+0x3a/0x50 [ 106.113969] [ 106.113969] to a SOFTIRQ-irq-unsafe lock: [ 106.114672] (&(&sb->map[i].swap_lock)->rlock){+.+.} [ 106.114674] [ 106.114674] ... which became SOFTIRQ-irq-unsafe at: [ 106.116000] ... [ 106.116003] _raw_spin_lock+0x33/0x64 [ 106.116676] sbitmap_get+0xd5/0x22c [ 106.117134] __sbitmap_queue_get+0xe8/0x177 [ 106.117731] __blk_mq_get_tag+0x1e6/0x22d [ 106.118286] blk_mq_get_tag+0x1db/0x6e4 [ 106.118756] blk_mq_get_driver_tag+0x161/0x258 [ 106.119383] blk_mq_dispatch_rq_list+0x28e/0xd7c [ 106.120043] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.120607] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.121234] __blk_mq_run_hw_queue+0x137/0x17e [ 106.121781] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.122366] blk_mq_run_hw_queue+0x151/0x187 [ 106.122887] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.123492] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.124042] blk_flush_plug_list+0x392/0x3d7 [ 106.124557] blk_finish_plug+0x37/0x4f [ 106.125019] read_pages+0x3ef/0x430 [ 106.125446] __do_page_cache_readahead+0x18e/0x2fc [ 106.126027] force_page_cache_readahead+0x121/0x133 [ 106.126621] page_cache_sync_readahead+0x35f/0x3bb [ 106.127229] generic_file_buffered_read+0x410/0x1860 [ 106.127932] __vfs_read+0x319/0x38f [ 106.128415] vfs_read+0xd2/0x19a [ 106.128817] ksys_read+0xb9/0x135 [ 106.129225] do_syscall_64+0x140/0x385 [ 106.129684] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.130292] [ 106.130292] other info that might help us debug this: [ 106.130292] [ 106.131226] Chain exists of: [ 106.131226] &sbq->ws[i].wait --> &(&hctx->dispatch_wait_lock)->rlock --> &(&sb->map[i].swap_lock)->rlock [ 106.131226] [ 106.132865] Possible interrupt unsafe locking scenario: [ 106.132865] [ 106.133659] CPU0 CPU1 [ 106.134194] ---- ---- [ 106.134733] lock(&(&sb->map[i].swap_lock)->rlock); [ 106.135318] local_irq_disable(); [ 106.136014] lock(&sbq->ws[i].wait); [ 106.136747] lock(&(&hctx->dispatch_wait_lock)->rlock); [ 106.137742] <Interrupt> [ 106.138110] lock(&sbq->ws[i].wait); [ 106.138625] [ 106.138625] *** DEADLOCK *** [ 106.138625] [ 106.139430] 3 locks held by fio/1043: [ 106.139947] #0: 0000000076ff0fd9 (rcu_read_lock){....}, at: hctx_lock+0x29/0xe8 [ 106.140813] #1: 000000002feb1016 (&sbq->ws[i].wait){..-.}, at: blk_mq_dispatch_rq_list+0x4ad/0xd7c [ 106.141877] #2: 000000007eec8b2f (&(&hctx->dispatch_wait_lock)->rlock){....}, at: blk_mq_dispatch_rq_list+0x4c1/0xd7c [ 106.143267] [ 106.143267] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 106.144351] -> (&sbq->ws[i].wait){..-.} ops: 82 { [ 106.144926] IN-SOFTIRQ-W at: [ 106.145314] _raw_spin_lock_irqsave+0x4b/0x82 [ 106.146042] __wake_up_common_lock+0x119/0x1b9 [ 106.146785] sbitmap_queue_wake_up+0x33f/0x383 [ 106.147567] sbitmap_queue_clear+0x4c/0x9a [ 106.148379] __blk_mq_free_request+0x188/0x1d3 [ 106.149148] blk_mq_free_request+0x23b/0x26b [ 106.149864] scsi_end_request+0x345/0x5d7 [ 106.150546] scsi_io_completion+0x4b5/0x8f0 [ 106.151367] scsi_finish_command+0x412/0x456 [ 106.152157] scsi_softirq_done+0x23f/0x29b [ 106.152855] blk_done_softirq+0x2a7/0x2e6 [ 106.153537] __do_softirq+0x360/0x6ad [ 106.154280] run_ksoftirqd+0x2f/0x5b [ 106.155020] smpboot_thread_fn+0x3a5/0x3db [ 106.155828] kthread+0x1d4/0x1e4 [ 106.156526] ret_from_fork+0x3a/0x50 [ 106.157267] INITIAL USE at: [ 106.157713] _raw_spin_lock_irqsave+0x4b/0x82 [ 106.158542] prepare_to_wait_exclusive+0xa8/0x215 [ 106.159421] blk_mq_get_tag+0x34f/0x6e4 [ 106.160186] blk_mq_get_request+0x48e/0xaef [ 106.160997] blk_mq_make_request+0x27e/0xbd2 [ 106.161828] generic_make_request+0x4d1/0x873 [ 106.162661] submit_bio+0x20c/0x253 [ 106.163379] mpage_bio_submit+0x44/0x4b [ 106.164142] mpage_readpages+0x3c2/0x407 [ 106.164919] read_pages+0x13a/0x430 [ 106.165633] __do_page_cache_readahead+0x18e/0x2fc [ 106.166530] force_page_cache_readahead+0x121/0x133 [ 106.167439] page_cache_sync_readahead+0x35f/0x3bb [ 106.168337] generic_file_buffered_read+0x410/0x1860 [ 106.169255] __vfs_read+0x319/0x38f [ 106.169977] vfs_read+0xd2/0x19a [ 106.170662] ksys_read+0xb9/0x135 [ 106.171356] do_syscall_64+0x140/0x385 [ 106.172120] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.173051] } [ 106.173308] ... key at: [<ffffffff85094600>] __key.26481+0x0/0x40 [ 106.174219] ... acquired at: [ 106.174646] _raw_spin_lock+0x33/0x64 [ 106.175183] blk_mq_dispatch_rq_list+0x4c1/0xd7c [ 106.175843] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.176518] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.177262] __blk_mq_run_hw_queue+0x137/0x17e [ 106.177900] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.178591] blk_mq_run_hw_queue+0x151/0x187 [ 106.179207] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.179926] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.180571] blk_flush_plug_list+0x392/0x3d7 [ 106.181187] blk_finish_plug+0x37/0x4f [ 106.181737] __se_sys_io_submit+0x171/0x304 [ 106.182346] do_syscall_64+0x140/0x385 [ 106.182895] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.183607] [ 106.183830] -> (&(&hctx->dispatch_wait_lock)->rlock){....} ops: 1 { [ 106.184691] INITIAL USE at: [ 106.185119] _raw_spin_lock+0x33/0x64 [ 106.185838] blk_mq_dispatch_rq_list+0x4c1/0xd7c [ 106.186697] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.187551] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.188481] __blk_mq_run_hw_queue+0x137/0x17e [ 106.189307] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.190189] blk_mq_run_hw_queue+0x151/0x187 [ 106.190989] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.191902] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.192739] blk_flush_plug_list+0x392/0x3d7 [ 106.193535] blk_finish_plug+0x37/0x4f [ 106.194269] __se_sys_io_submit+0x171/0x304 [ 106.195059] do_syscall_64+0x140/0x385 [ 106.195794] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.196705] } [ 106.196950] ... key at: [<ffffffff84880620>] __key.51231+0x0/0x40 [ 106.197853] ... acquired at: [ 106.198270] lock_acquire+0x280/0x2f3 [ 106.198806] _raw_spin_lock+0x33/0x64 [ 106.199337] sbitmap_get+0xd5/0x22c [ 106.199850] __sbitmap_queue_get+0xe8/0x177 [ 106.200450] __blk_mq_get_tag+0x1e6/0x22d [ 106.201035] blk_mq_get_tag+0x1db/0x6e4 [ 106.201589] blk_mq_get_driver_tag+0x161/0x258 [ 106.202237] blk_mq_dispatch_rq_list+0x5b9/0xd7c [ 106.202902] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.203572] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.204316] __blk_mq_run_hw_queue+0x137/0x17e [ 106.204956] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.205649] blk_mq_run_hw_queue+0x151/0x187 [ 106.206269] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.206997] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.207644] blk_flush_plug_list+0x392/0x3d7 [ 106.208264] blk_finish_plug+0x37/0x4f [ 106.208814] __se_sys_io_submit+0x171/0x304 [ 106.209415] do_syscall_64+0x140/0x385 [ 106.209965] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.210684] [ 106.210904] [ 106.210904] the dependencies between the lock to be acquired [ 106.210905] and SOFTIRQ-irq-unsafe lock: [ 106.212541] -> (&(&sb->map[i].swap_lock)->rlock){+.+.} ops: 1969 { [ 106.213393] HARDIRQ-ON-W at: [ 106.213840] _raw_spin_lock+0x33/0x64 [ 106.214570] sbitmap_get+0xd5/0x22c [ 106.215282] __sbitmap_queue_get+0xe8/0x177 [ 106.216086] __blk_mq_get_tag+0x1e6/0x22d [ 106.216876] blk_mq_get_tag+0x1db/0x6e4 [ 106.217627] blk_mq_get_driver_tag+0x161/0x258 [ 106.218465] blk_mq_dispatch_rq_list+0x28e/0xd7c [ 106.219326] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.220198] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.221138] __blk_mq_run_hw_queue+0x137/0x17e [ 106.221975] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.222874] blk_mq_run_hw_queue+0x151/0x187 [ 106.223686] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.224597] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.225444] blk_flush_plug_list+0x392/0x3d7 [ 106.226255] blk_finish_plug+0x37/0x4f [ 106.227006] read_pages+0x3ef/0x430 [ 106.227717] __do_page_cache_readahead+0x18e/0x2fc [ 106.228595] force_page_cache_readahead+0x121/0x133 [ 106.229491] page_cache_sync_readahead+0x35f/0x3bb [ 106.230373] generic_file_buffered_read+0x410/0x1860 [ 106.231277] __vfs_read+0x319/0x38f [ 106.231986] vfs_read+0xd2/0x19a [ 106.232666] ksys_read+0xb9/0x135 [ 106.233350] do_syscall_64+0x140/0x385 [ 106.234097] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.235012] SOFTIRQ-ON-W at: [ 106.235460] _raw_spin_lock+0x33/0x64 [ 106.236195] sbitmap_get+0xd5/0x22c [ 106.236913] __sbitmap_queue_get+0xe8/0x177 [ 106.237715] __blk_mq_get_tag+0x1e6/0x22d [ 106.238488] blk_mq_get_tag+0x1db/0x6e4 [ 106.239244] blk_mq_get_driver_tag+0x161/0x258 [ 106.240079] blk_mq_dispatch_rq_list+0x28e/0xd7c [ 106.240937] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.241806] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.242751] __blk_mq_run_hw_queue+0x137/0x17e [ 106.243579] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.244469] blk_mq_run_hw_queue+0x151/0x187 [ 106.245277] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.246191] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.247044] blk_flush_plug_list+0x392/0x3d7 [ 106.247859] blk_finish_plug+0x37/0x4f [ 106.248749] read_pages+0x3ef/0x430 [ 106.249463] __do_page_cache_readahead+0x18e/0x2fc [ 106.250357] force_page_cache_readahead+0x121/0x133 [ 106.251263] page_cache_sync_readahead+0x35f/0x3bb [ 106.252157] generic_file_buffered_read+0x410/0x1860 [ 106.253084] __vfs_read+0x319/0x38f [ 106.253808] vfs_read+0xd2/0x19a [ 106.254488] ksys_read+0xb9/0x135 [ 106.255186] do_syscall_64+0x140/0x385 [ 106.255943] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.256867] INITIAL USE at: [ 106.257300] _raw_spin_lock+0x33/0x64 [ 106.258033] sbitmap_get+0xd5/0x22c [ 106.258747] __sbitmap_queue_get+0xe8/0x177 [ 106.259542] __blk_mq_get_tag+0x1e6/0x22d [ 106.260320] blk_mq_get_tag+0x1db/0x6e4 [ 106.261072] blk_mq_get_driver_tag+0x161/0x258 [ 106.261902] blk_mq_dispatch_rq_list+0x28e/0xd7c [ 106.262762] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.263626] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.264571] __blk_mq_run_hw_queue+0x137/0x17e [ 106.265409] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.266302] blk_mq_run_hw_queue+0x151/0x187 [ 106.267111] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.268028] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.268878] blk_flush_plug_list+0x392/0x3d7 [ 106.269694] blk_finish_plug+0x37/0x4f [ 106.270432] read_pages+0x3ef/0x430 [ 106.271139] __do_page_cache_readahead+0x18e/0x2fc [ 106.272040] force_page_cache_readahead+0x121/0x133 [ 106.272932] page_cache_sync_readahead+0x35f/0x3bb [ 106.273811] generic_file_buffered_read+0x410/0x1860 [ 106.274709] __vfs_read+0x319/0x38f [ 106.275407] vfs_read+0xd2/0x19a [ 106.276074] ksys_read+0xb9/0x135 [ 106.276764] do_syscall_64+0x140/0x385 [ 106.277500] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.278417] } [ 106.278676] ... key at: [<ffffffff85094640>] __key.26212+0x0/0x40 [ 106.279586] ... acquired at: [ 106.280026] lock_acquire+0x280/0x2f3 [ 106.280559] _raw_spin_lock+0x33/0x64 [ 106.281101] sbitmap_get+0xd5/0x22c [ 106.281610] __sbitmap_queue_get+0xe8/0x177 [ 106.282221] __blk_mq_get_tag+0x1e6/0x22d [ 106.282809] blk_mq_get_tag+0x1db/0x6e4 [ 106.283368] blk_mq_get_driver_tag+0x161/0x258 [ 106.284018] blk_mq_dispatch_rq_list+0x5b9/0xd7c [ 106.284685] blk_mq_do_dispatch_sched+0x23a/0x287 [ 106.285371] blk_mq_sched_dispatch_requests+0x379/0x3fc [ 106.286135] __blk_mq_run_hw_queue+0x137/0x17e [ 106.286806] __blk_mq_delay_run_hw_queue+0x80/0x25f [ 106.287515] blk_mq_run_hw_queue+0x151/0x187 [ 106.288149] blk_mq_sched_insert_requests+0x13f/0x175 [ 106.289041] blk_mq_flush_plug_list+0x7d6/0x81b [ 106.289912] blk_flush_plug_list+0x392/0x3d7 [ 106.290590] blk_finish_plug+0x37/0x4f [ 106.291238] __se_sys_io_submit+0x171/0x304 [ 106.291864] do_syscall_64+0x140/0x385 [ 106.292534] entry_SYSCALL_64_after_hwframe+0x49/0xbe Reported-by:
Ming Lei <ming.lei@redhat.com> Tested-by:
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- 09 Dec, 2018 13 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: "A decent batch of fixes here. I'd say about half are for problems that have existed for a while, and half are for new regressions added in the 4.20 merge window. 1) Fix 10G SFP phy module detection in mvpp2, from Baruch Siach. 2) Revert bogus emac driver change, from Benjamin Herrenschmidt. 3) Handle BPF exported data structure with pointers when building 32-bit userland, from Daniel Borkmann. 4) Memory leak fix in act_police, from Davide Caratti. 5) Check RX checksum offload in RX descriptors properly in aquantia driver, from Dmitry Bogdanov. 6) SKB unlink fix in various spots, from Edward Cree. 7) ndo_dflt_fdb_dump() only works with ethernet, enforce this, from Eric Dumazet. 8) Fix FID leak in mlxsw driver, from Ido Schimmel. 9) IOTLB locking fix in vhost, from Jean-Philippe Brucker. 10) Fix SKB truesize accounting in ipv4/ipv6/netfilter frag memory limits otherwise namespace exit can hang. From Jiri Wiesner. 11) Address block parsing length fixes in x25 from Martin Schiller. 12) IRQ and ring accounting fixes in bnxt_en, from Michael Chan. 13) For tun interfaces, only iface delete works with rtnl ops, enforce this by disallowing add. From Nicolas Dichtel. 14) Use after free in liquidio, from Pan Bian. 15) Fix SKB use after passing to netif_receive_skb(), from Prashant Bhole. 16) Static key accounting and other fixes in XPS from Sabrina Dubroca. 17) Partially initialized flow key passed to ip6_route_output(), from Shmulik Ladkani. 18) Fix RTNL deadlock during reset in ibmvnic driver, from Thomas Falcon. 19) Several small TCP fixes (off-by-one on window probe abort, NULL deref in tail loss probe, SNMP mis-estimations) from Yuchung Cheng" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (93 commits) net/sched: cls_flower: Reject duplicated rules also under skip_sw bnxt_en: Fix _bnxt_get_max_rings() for 57500 chips. bnxt_en: Fix NQ/CP rings accounting on the new 57500 chips. bnxt_en: Keep track of reserved IRQs. bnxt_en: Fix CNP CoS queue regression. net/mlx4_core: Correctly set PFC param if global pause is turned off. Revert "net/ibm/emac: wrong bit is used for STA control" neighbour: Avoid writing before skb->head in neigh_hh_output() ipv6: Check available headroom in ip6_xmit() even without options tcp: lack of available data can also cause TSO defer ipv6: sr: properly initialize flowi6 prior passing to ip6_route_output mlxsw: spectrum_switchdev: Fix VLAN device deletion via ioctl mlxsw: spectrum_router: Relax GRE decap matching check mlxsw: spectrum_switchdev: Avoid leaking FID's reference count mlxsw: spectrum_nve: Remove easily triggerable warnings ipv4: ipv6: netfilter: Adjust the frag mem limit when truesize changes sctp: frag_point sanity check tcp: fix NULL ref in tail loss probe tcp: Do not underestimate rwnd_limited net: use skb_list_del_init() to remove from RX sublists ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Three fixes: a boot parameter re-(re-)fix, a retpoline build artifact fix and an LLVM workaround" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vdso: Drop implicit common-page-size linker flag x86/build: Fix compiler support check for CONFIG_RETPOLINE x86/boot: Clear RSDP address in boot_params for broken loaders
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull kprobes fixes from Ingo Molnar: "Two kprobes fixes: a blacklist fix and an instruction patching related corruption fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: kprobes/x86: Blacklist non-attachable interrupt functions kprobes/x86: Fix instruction patching corruption when copying more than one RIP-relative instruction
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI fixes from Ingo Molnar: "Two fixes: a large-system fix and an earlyprintk fix with certain resolutions" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/earlyprintk/efi: Fix infinite loop on some screen widths x86/efi: Allocate e820 buffer before calling efi_exit_boot_service
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Or Gerlitz authored
Currently, duplicated rules are rejected only for skip_hw or "none", hence allowing users to push duplicates into HW for no reason. Use the flower tables to protect for that. Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
Paul Blakey <paulb@mellanox.com> Reported-by:
Chris Mi <chrism@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Michael Chan says: ==================== bnxt_en: Bug fixes. The first patch fixes a regression on CoS queue setup, introduced recently by the 57500 new chip support patches. The rest are fixes related to ring and resource accounting on the new 57500 chips. ==================== Signed-off-by: -
Michael Chan authored
The CP rings are accounted differently on the new 57500 chips. There must be enough CP rings for the sum of RX and TX rings on the new chips. The current logic may be over-estimating the RX and TX rings. The output parameter max_cp should be the maximum NQs capped by MSIX vectors available for networking in the context of 57500 chips. The existing code which uses CMPL rings capped by the MSIX vectors works most of the time but is not always correct. Signed-off-by:
Michael Chan <michael.chan@broadcom.com> Signed-off-by:
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Michael Chan authored
The new 57500 chips have introduced the NQ structure in addition to the existing CP rings in all chips. We need to introduce a new bnxt_nq_rings_in_use(). On legacy chips, the 2 functions are the same and one will just call the other. On the new chips, they refer to the 2 separate ring structures. The new function is now called to determine the resource (NQ or CP rings) associated with MSIX that are in use. On 57500 chips, the RDMA driver does not use the CP rings so we don't need to do the subtraction adjustment. Fixes: 41e8d798 ("bnxt_en: Modify the ring reservation functions for 57500 series chips.") Signed-off-by:
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Michael Chan authored
The new 57500 chips use 1 NQ per MSIX vector, whereas legacy chips use 1 CP ring per MSIX vector. To better unify this, add a resv_irqs field to struct bnxt_hw_resc. On legacy chips, we initialize resv_irqs with resv_cp_rings. On new chips, we initialize it with the allocated MSIX resources. Signed-off-by:
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Michael Chan authored
Recent changes to support the 57500 devices have created this regression. The bnxt_hwrm_queue_qportcfg() call was moved to be called earlier before the RDMA support was determined, causing the CoS queues configuration to be set before knowing whether RDMA was supported or not. Fix it by moving it to the right place right after RDMA support is determined. Fixes: 98f04cf0 ("bnxt_en: Check context memory requirements from firmware.") Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds authored
Pull char/misc driver fixes from Greg KH: "Here are some small driver fixes for 4.20-rc6. There is a hyperv fix that for some reaon took forever to get into a shape that could be applied to the tree properly, but resolves a much reported issue. The others are some gnss patches, one a bugfix and the two others updates to the MAINTAINERS file to properly match the gnss files in the tree. All have been in linux-next for a while with no reported issues" * tag 'char-misc-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: MAINTAINERS: exclude gnss from SIRFPRIMA2 regex matching MAINTAINERS: add gnss scm tree gnss: sirf: fix activation retry handling Drivers: hv: vmbus: Offload the handling of channels to two workqueues
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
Pull staging fixes from Greg KH: "Here are two staging driver bugfixes for 4.20-rc6. One is a revert of a previously incorrect patch that was merged a while ago, and the other resolves a possible buffer overrun that was found by code inspection. Both of these have been in the linux-next tree with no reported issues" * tag 'staging-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: Revert commit ef9209b6 "staging: rtl8723bs: Fix indenting errors and an off-by-one mistake in core/rtw_mlme_ext.c" staging: rtl8712: Fix possible buffer overrun
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