[bug report][regression] device node still exists after blktests nvme/011 finished
Sagi Grimberg
sagi at grimberg.me
Fri May 28 10:00:20 PDT 2021
> Hi
> I would like to report one regression issue we found recently, after
> blktests nvme/011 finished, the device node still exists and seems
> there is a lock issue from the log, let me know if you need any
> testing for it, thanks.
Hannes, this is a result of your patch most likely.
>
> # ./check nvme/011
> nvme/011 (run data verification fio job on NVMeOF file-backed ns) [passed]
> runtime 71.350s ... 77.131s
> # lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> sda 8:0 0 465.8G 0 disk
> ├─sda1 8:1 0 1G 0 part /boot
> ├─sda2 8:2 0 31.5G 0 part [SWAP]
> ├─sda3 8:3 0 15G 0 part
> ├─sda4 8:4 0 1K 0 part
> ├─sda5 8:5 0 15G 0 part
> ├─sda6 8:6 0 5G 0 part
> └─sda7 8:7 0 398.3G 0 part /
> zram0 253:0 0 4G 0 disk [SWAP]
> nvme0n1 259:1 0 1G 0 disk
>
> #dmesg
> [ 793.719149] run blktests nvme/011 at 2021-05-28 05:45:49
> [ 793.899062] nvmet: adding nsid 1 to subsystem blktests-subsystem-1
> [ 793.950783] nvmet: creating controller 1 for subsystem
> blktests-subsystem-1 for NQN
> nqn.2014-08.org.nvmexpress:uuid:d39240f497c64fc8bf7ca767d256a394.
> [ 793.964271] nvme nvme0: creating 48 I/O queues.
> [ 793.973187] nvme nvme0: new ctrl: "blktests-subsystem-1"
> [ 863.401172] nvme nvme0: Removing ctrl: NQN "blktests-subsystem-1"
> [ 863.656534] block nvme0n1: no available path - failing I/O
> [ 863.662039] block nvme0n1: no available path - failing I/O
> [ 863.667546] block nvme0n1: no available path - failing I/O
> [ 863.673029] block nvme0n1: no available path - failing I/O
> [ 863.678530] block nvme0n1: no available path - failing I/O
> [ 863.684032] block nvme0n1: no available path - failing I/O
> [ 863.689523] block nvme0n1: no available path - failing I/O
> [ 863.695014] block nvme0n1: no available path - failing I/O
> [ 863.700502] block nvme0n1: no available path - failing I/O
> [ 863.705994] Buffer I/O error on dev nvme0n1, logical block 262016,
> async page read
> [ 1108.488647] INFO: task systemd-udevd:2400 blocked for more than 122 seconds.
> [ 1108.495699] Not tainted 5.13.0-rc3+ #8
> [ 1108.499972] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 1108.507797] task:systemd-udevd state:D stack: 0 pid: 2400
> ppid: 1134 flags:0x00004004
> [ 1108.516140] Call Trace:
> [ 1108.518589] __schedule+0x247/0x6f0
> [ 1108.522088] schedule+0x46/0xb0
> [ 1108.525233] schedule_preempt_disabled+0xa/0x10
> [ 1108.529767] __mutex_lock.constprop.0+0x2a4/0x470
> [ 1108.534472] ? __kernfs_remove.part.0+0x174/0x1f0
> [ 1108.539178] ? kernfs_remove_by_name_ns+0x5c/0x90
> [ 1108.543885] del_gendisk+0x99/0x230
> [ 1108.547378] nvme_mpath_remove_disk+0x97/0xb0 [nvme_core]
> [ 1108.552787] nvme_put_ns_head+0x2a/0xb0 [nvme_core]
> [ 1108.557664] __blkdev_put+0x115/0x160
> [ 1108.561339] blkdev_put+0x4c/0x130
> [ 1108.564745] blkdev_close+0x22/0x30
> [ 1108.568238] __fput+0x94/0x240
> [ 1108.571307] task_work_run+0x5f/0x90
> [ 1108.574885] exit_to_user_mode_loop+0x119/0x120
> [ 1108.579428] exit_to_user_mode_prepare+0x97/0xa0
> [ 1108.584047] syscall_exit_to_user_mode+0x12/0x40
> [ 1108.588664] do_syscall_64+0x4d/0x80
> [ 1108.592254] entry_SYSCALL_64_after_hwframe+0x44/0xae
> [ 1108.597314] RIP: 0033:0x7f222e799627
> [ 1108.600903] RSP: 002b:00007ffd07c2b518 EFLAGS: 00000246 ORIG_RAX:
> 0000000000000003
> [ 1108.608477] RAX: 0000000000000000 RBX: 00007f222d801240 RCX: 00007f222e799627
> [ 1108.615620] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
> [ 1108.622762] RBP: 0000000000000006 R08: 000055badf77ba70 R09: 0000000000000000
> [ 1108.629901] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd07c2b5c0
> [ 1108.637026] R13: 0000000000000000 R14: 000055bae0be5820 R15: 000055bae0b8bec0
> [ 1231.370531] INFO: task systemd-udevd:2400 blocked for more than 245 seconds.
> [ 1231.377579] Not tainted 5.13.0-rc3+ #8
> [ 1231.381853] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 1231.389679] task:systemd-udevd state:D stack: 0 pid: 2400
> ppid: 1134 flags:0x00004004
> [ 1231.398024] Call Trace:
> [ 1231.400478] __schedule+0x247/0x6f0
> [ 1231.403970] schedule+0x46/0xb0
> [ 1231.407112] schedule_preempt_disabled+0xa/0x10
> [ 1231.411638] __mutex_lock.constprop.0+0x2a4/0x470
> [ 1231.416345] ? __kernfs_remove.part.0+0x174/0x1f0
> [ 1231.421051] ? kernfs_remove_by_name_ns+0x5c/0x90
> [ 1231.425765] del_gendisk+0x99/0x230
> [ 1231.429268] nvme_mpath_remove_disk+0x97/0xb0 [nvme_core]
> [ 1231.434692] nvme_put_ns_head+0x2a/0xb0 [nvme_core]
> [ 1231.439581] __blkdev_put+0x115/0x160
> [ 1231.443255] blkdev_put+0x4c/0x130
> [ 1231.446668] blkdev_close+0x22/0x30
> [ 1231.450171] __fput+0x94/0x240
> [ 1231.453232] task_work_run+0x5f/0x90
> [ 1231.456809] exit_to_user_mode_loop+0x119/0x120
> [ 1231.461351] exit_to_user_mode_prepare+0x97/0xa0
> [ 1231.465980] syscall_exit_to_user_mode+0x12/0x40
> [ 1231.470608] do_syscall_64+0x4d/0x80
> [ 1231.474187] entry_SYSCALL_64_after_hwframe+0x44/0xae
> [ 1231.479247] RIP: 0033:0x7f222e799627
> [ 1231.482835] RSP: 002b:00007ffd07c2b518 EFLAGS: 00000246 ORIG_RAX:
> 0000000000000003
> [ 1231.490392] RAX: 0000000000000000 RBX: 00007f222d801240 RCX: 00007f222e799627
> [ 1231.497537] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
> [ 1231.504670] RBP: 0000000000000006 R08: 000055badf77ba70 R09: 0000000000000000
> [ 1231.511800] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd07c2b5c0
> [ 1231.518925] R13: 0000000000000000 R14: 000055bae0be5820 R15: 000055bae0b8bec0
> [ 1354.252532] INFO: task systemd-udevd:2400 blocked for more than 368 seconds.
> [ 1354.259581] Not tainted 5.13.0-rc3+ #8
> [ 1354.263853] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 1354.271678] task:systemd-udevd state:D stack: 0 pid: 2400
> ppid: 1134 flags:0x00004004
> [ 1354.280025] Call Trace:
> [ 1354.282469] __schedule+0x247/0x6f0
> [ 1354.285962] schedule+0x46/0xb0
> [ 1354.289105] schedule_preempt_disabled+0xa/0x10
> [ 1354.293630] __mutex_lock.constprop.0+0x2a4/0x470
> [ 1354.298327] ? __kernfs_remove.part.0+0x174/0x1f0
> [ 1354.303027] ? kernfs_remove_by_name_ns+0x5c/0x90
> [ 1354.307732] del_gendisk+0x99/0x230
> [ 1354.311226] nvme_mpath_remove_disk+0x97/0xb0 [nvme_core]
> [ 1354.316628] nvme_put_ns_head+0x2a/0xb0 [nvme_core]
> [ 1354.321506] __blkdev_put+0x115/0x160
> [ 1354.325171] blkdev_put+0x4c/0x130
> [ 1354.328576] blkdev_close+0x22/0x30
> [ 1354.332070] __fput+0x94/0x240
> [ 1354.335127] task_work_run+0x5f/0x90
> [ 1354.338717] exit_to_user_mode_loop+0x119/0x120
> [ 1354.343249] exit_to_user_mode_prepare+0x97/0xa0
> [ 1354.347860] syscall_exit_to_user_mode+0x12/0x40
> [ 1354.352480] do_syscall_64+0x4d/0x80
> [ 1354.356059] entry_SYSCALL_64_after_hwframe+0x44/0xae
> [ 1354.361111] RIP: 0033:0x7f222e799627
> [ 1354.364684] RSP: 002b:00007ffd07c2b518 EFLAGS: 00000246 ORIG_RAX:
> 0000000000000003
> [ 1354.372247] RAX: 0000000000000000 RBX: 00007f222d801240 RCX: 00007f222e799627
> [ 1354.379371] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
> [ 1354.386501] RBP: 0000000000000006 R08: 000055badf77ba70 R09: 0000000000000000
> [ 1354.393629] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd07c2b5c0
> [ 1354.400754] R13: 0000000000000000 R14: 000055bae0be5820 R15: 000055bae0b8bec0
>
>
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