| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20260108170007.GG21071@twin.jikos.cz> Date: Thu, 8 Jan 2026 18:00:07 +0100 From: David Sterba <dsterba@...e.cz> To: David Sterba <dsterba@...e.cz> Cc: Daniel Vacek <neelx@...e.com>, Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>, David Sterba <dsterba@...e.com>, Qu Wenruo <wqu@...e.com>, linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2] btrfs: simplify async csum synchronization On Thu, Jan 08, 2026 at 03:35:29PM +0100, David Sterba wrote: > On Wed, Jan 07, 2026 at 06:00:37PM +0100, Daniel Vacek wrote: > > On Mon, 24 Nov 2025 at 19:09, David Sterba <dsterba@...e.cz> wrote: > > > > > > On Tue, Nov 18, 2025 at 01:07:16PM +0100, David Sterba wrote: > > > > On Thu, Nov 13, 2025 at 11:17:30AM +0100, Daniel Vacek wrote: > > > > > We don't need the redundant completion csum_done which marks the > > > > > csum work has been executed. We can simply flush_work() instead. > > > > > > > > > > This way we can slim down the btrfs_bio structure by 32 bytes matching > > > > > it's size to what it used to be before introducing the async csums. > > > > > Hence not making any change with respect to the structure size. > > > > > --- > > > > > This is a simple fixup for "btrfs: introduce btrfs_bio::async_csum" in > > > > > for-next and can be squashed into it. > > > > > > > > > > v2: metadata is not checksummed here so use the endio_workers workqueue > > > > > unconditionally. Thanks to Qu Wenruo. > > > > > > > > This looks quite useful regarding the size reduction of btrfs_bio, > > > > please fold it to the patch. Thanks. > > > > > > The 6.19 branch is now frozen so this patch will be applied separately > > > later. > > > > Gentle ping. It seems this one has not been picked yet. > > Now added to for-next, thanks. Oh I remember now why it was not in for next, it causes a hang in btrfs/292: btrfs/292 [02:41:30][23561.047371] run fstests btrfs/292 at 2026-01-08 02:41:30 [23566.923172] BTRFS: device fsid 31dcd19d-04b6-405d-bb2b-65a61130b933 devid 1 transid 8 /dev/vdb (254:16) scanned by mkfs.btrfs (20472) [23566.926055] BTRFS: device fsid 31dcd19d-04b6-405d-bb2b-65a61130b933 devid 2 transid 8 /dev/vdc (254:32) scanned by mkfs.btrfs (20472) [23566.929018] BTRFS: device fsid 31dcd19d-04b6-405d-bb2b-65a61130b933 devid 3 transid 8 /dev/vdd (254:48) scanned by mkfs.btrfs (20472) [23566.932433] BTRFS: device fsid 31dcd19d-04b6-405d-bb2b-65a61130b933 devid 4 transid 8 /dev/vde (254:64) scanned by mkfs.btrfs (20472) [23566.935356] BTRFS: device fsid 31dcd19d-04b6-405d-bb2b-65a61130b933 devid 5 transid 8 /dev/vdf (254:80) scanned by mkfs.btrfs (20472) [23566.949556] BTRFS: device fsid 31dcd19d-04b6-405d-bb2b-65a61130b933 devid 6 transid 8 /dev/vdg (254:96) scanned by mkfs.btrfs (20472) [23567.006925] BTRFS info (device vdb): first mount of filesystem 31dcd19d-04b6-405d-bb2b-65a61130b933 [23567.008778] BTRFS info (device vdb): using crc32c checksum algorithm [23567.084280] BTRFS info (device vdb): checking UUID tree [23567.087799] BTRFS info (device vdb): enabling free space tree [24581.533869] INFO: task kworker/u16:5:19550 blocked for more than 491 seconds. [24581.536951] Not tainted 6.19.0-rc4-default+ #2633 [24581.539079] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [24581.542294] task:kworker/u16:5 state:D stack:22528 pid:19550 tgid:19550 ppid:2 task_flags:0x4208060 flags:0x00080000 [24581.546803] Workqueue: btrfs-endio simple_end_io_work [btrfs] [24581.549747] Call Trace: [24581.550884] <TASK> [24581.551928] __schedule+0x726/0xe50 [24581.553498] ? io_schedule_timeout+0xb0/0xb0 [24581.555332] ? crc32c+0x130/0x180 [24581.556802] ? rcu_is_watching+0x1c/0x40 [24581.558507] ? lock_acquire+0x8a/0x110 [24581.560034] ? schedule+0x91/0x130 [24581.561236] ? __wait_for_common+0x228/0x330 [24581.562710] schedule+0x60/0x130 [24581.563872] schedule_timeout+0x18f/0x210 [24581.565217] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.566868] ? btrfs_calculate_block_csum_pages+0x17a/0x1d0 [btrfs] [24581.569384] ? lock_acquire+0x8a/0x110 [24581.570693] ? __wait_for_common+0x99/0x330 [24581.572100] ? rcu_is_watching+0x1c/0x40 [24581.573395] __wait_for_common+0x260/0x330 [24581.574786] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.576378] ? bit_wait_timeout+0xc0/0xc0 [24581.577735] ? start_flush_work+0x3f9/0x6e0 [24581.579132] ? start_flush_work+0x403/0x6e0 [24581.580468] __flush_work+0x122/0x190 [24581.581623] ? start_flush_work+0x6e0/0x6e0 [24581.582921] ? csum_one_bio+0x309/0x390 [btrfs] [24581.584736] ? flush_workqueue_prep_pwqs+0x280/0x280 [24581.586122] ? __might_resched+0x16a/0x250 [24581.587284] ? rcu_read_unlock+0x80/0x80 [24581.588403] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [24581.590083] process_one_work+0x4e6/0xa00 [24581.591142] ? pwq_dec_nr_in_flight+0x260/0x260 [24581.592305] ? __list_add_valid_or_report+0x3b/0xb0 [24581.593481] worker_thread+0x3b7/0x6b0 [24581.594448] ? __kthread_parkme+0x108/0x130 [24581.595491] ? process_one_work+0xa00/0xa00 [24581.596495] kthread+0x221/0x3c0 [24581.597278] ? kthread+0x128/0x3c0 [24581.598131] ? trace_hardirqs_on+0x12/0xf0 [24581.599087] ? kthread_is_per_cpu+0x60/0x60 [24581.600078] ? lock_acquire+0x8a/0x110 [24581.600921] ? calculate_sigpending+0x2a/0x60 [24581.601888] ? kthread_is_per_cpu+0x60/0x60 [24581.602803] ret_from_fork+0x280/0x2f0 [24581.603646] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [24581.604819] ? __switch_to+0x298/0x6f0 [24581.605631] ? kthread_is_per_cpu+0x60/0x60 [24581.606530] ret_from_fork_asm+0x11/0x20 [24581.607369] </TASK> [24581.607946] INFO: task kworker/u16:16:3517 blocked for more than 491 seconds. [24581.609276] Not tainted 6.19.0-rc4-default+ #2633 [24581.610322] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [24581.611832] task:kworker/u16:16 state:D stack:21432 pid:3517 tgid:3517 ppid:2 task_flags:0x4208060 flags:0x00080000 [24581.613813] Workqueue: btrfs-endio simple_end_io_work [btrfs] [24581.615165] Call Trace: [24581.615706] <TASK> [24581.616200] __schedule+0x726/0xe50 [24581.616913] ? io_schedule_timeout+0xb0/0xb0 [24581.617745] ? stack_depot_save_flags+0x3b/0x670 [24581.618615] ? rcu_is_watching+0x1c/0x40 [24581.619390] ? lock_acquire+0x8a/0x110 [24581.620121] ? schedule+0x91/0x130 [24581.620807] ? __wait_for_common+0x228/0x330 [24581.621627] schedule+0x60/0x130 [24581.622283] schedule_timeout+0x18f/0x210 [24581.623061] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.623988] ? lock_acquire+0x8a/0x110 [24581.624707] ? __wait_for_common+0x99/0x330 [24581.625498] ? rcu_is_watching+0x1c/0x40 [24581.626273] __wait_for_common+0x260/0x330 [24581.627063] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.627989] ? bit_wait_timeout+0xc0/0xc0 [24581.628774] ? start_flush_work+0x3f9/0x6e0 [24581.629591] ? start_flush_work+0x403/0x6e0 [24581.630408] __flush_work+0x122/0x190 [24581.631129] ? start_flush_work+0x6e0/0x6e0 [24581.631934] ? __call_rcu_common.constprop.0+0x269/0x450 [24581.632902] ? flush_workqueue_prep_pwqs+0x280/0x280 [24581.633836] ? __might_resched+0x16a/0x250 [24581.634628] ? rcu_read_unlock+0x80/0x80 [24581.635368] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [24581.636565] process_one_work+0x4e6/0xa00 [24581.637355] ? pwq_dec_nr_in_flight+0x260/0x260 [24581.638208] ? __list_add_valid_or_report+0x3b/0xb0 [24581.639102] worker_thread+0x3b7/0x6b0 [24581.639847] ? __kthread_parkme+0x108/0x130 [24581.640628] ? process_one_work+0xa00/0xa00 [24581.641405] kthread+0x221/0x3c0 [24581.642052] ? kthread+0x128/0x3c0 [24581.642731] ? trace_hardirqs_on+0x12/0xf0 [24581.643521] ? kthread_is_per_cpu+0x60/0x60 [24581.644304] ? lock_acquire+0x8a/0x110 [24581.645020] ? calculate_sigpending+0x2a/0x60 [24581.645856] ? kthread_is_per_cpu+0x60/0x60 [24581.646637] ret_from_fork+0x280/0x2f0 [24581.647354] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [24581.648396] ? __switch_to+0x298/0x6f0 [24581.649122] ? kthread_is_per_cpu+0x60/0x60 [24581.649941] ret_from_fork_asm+0x11/0x20 [24581.650686] </TASK> [24581.651178] INFO: task kworker/u16:20:18839 blocked for more than 491 seconds. [24581.652485] Not tainted 6.19.0-rc4-default+ #2633 [24581.653435] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [24581.654863] task:kworker/u16:20 state:D stack:23112 pid:18839 tgid:18839 ppid:2 task_flags:0x4208060 flags:0x00080000 [24581.656770] Workqueue: btrfs-endio simple_end_io_work [btrfs] [24581.658127] Call Trace: [24581.658653] <TASK> [24581.659126] __schedule+0x726/0xe50 [24581.659833] ? io_schedule_timeout+0xb0/0xb0 [24581.660637] ? stack_depot_save_flags+0x3b/0x670 [24581.661473] ? rcu_is_watching+0x1c/0x40 [24581.662217] ? lock_acquire+0x8a/0x110 [24581.662924] ? schedule+0x91/0x130 [24581.663603] ? __wait_for_common+0x228/0x330 [24581.664406] schedule+0x60/0x130 [24581.665050] schedule_timeout+0x18f/0x210 [24581.665820] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.666713] ? btrfs_calculate_block_csum_pages+0x17a/0x1d0 [btrfs] [24581.668090] ? lock_acquire+0x8a/0x110 [24581.671807] ? __wait_for_common+0x99/0x330 [24581.672590] ? rcu_is_watching+0x1c/0x40 [24581.673321] __wait_for_common+0x260/0x330 [24581.674096] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.674977] ? bit_wait_timeout+0xc0/0xc0 [24581.675757] ? start_flush_work+0x3f9/0x6e0 [24581.676512] ? start_flush_work+0x403/0x6e0 [24581.677293] __flush_work+0x122/0x190 [24581.678010] ? start_flush_work+0x6e0/0x6e0 [24581.678788] ? csum_one_bio+0x309/0x390 [btrfs] [24581.679937] ? flush_workqueue_prep_pwqs+0x280/0x280 [24581.680828] ? __might_resched+0x16a/0x250 [24581.681591] ? rcu_read_unlock+0x80/0x80 [24581.682344] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [24581.683497] process_one_work+0x4e6/0xa00 [24581.684244] ? pwq_dec_nr_in_flight+0x260/0x260 [24581.685061] ? __list_add_valid_or_report+0x3b/0xb0 [24581.685949] worker_thread+0x3b7/0x6b0 [24581.686647] ? __kthread_parkme+0x108/0x130 [24581.687406] ? process_one_work+0xa00/0xa00 [24581.688192] kthread+0x221/0x3c0 [24581.688832] ? kthread+0x128/0x3c0 [24581.689484] ? trace_hardirqs_on+0x12/0xf0 [24581.690247] ? kthread_is_per_cpu+0x60/0x60 [24581.691018] ? lock_acquire+0x8a/0x110 [24581.691727] ? calculate_sigpending+0x2a/0x60 [24581.692530] ? kthread_is_per_cpu+0x60/0x60 [24581.693311] ret_from_fork+0x280/0x2f0 [24581.694040] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [24581.695059] ? __switch_to+0x298/0x6f0 [24581.695786] ? kthread_is_per_cpu+0x60/0x60 [24581.696551] ret_from_fork_asm+0x11/0x20 [24581.697284] </TASK> [24581.697766] INFO: task kworker/u16:17:27479 blocked for more than 491 seconds. [24581.699051] Not tainted 6.19.0-rc4-default+ #2633 [24581.699967] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [24581.701311] task:kworker/u16:17 state:D stack:23112 pid:27479 tgid:27479 ppid:2 task_flags:0x4208060 flags:0x00080000 [24581.703208] Workqueue: btrfs-endio simple_end_io_work [btrfs] [24581.704519] Call Trace: [24581.705029] <TASK> [24581.705495] __schedule+0x726/0xe50 [24581.706188] ? io_schedule_timeout+0xb0/0xb0 [24581.706967] ? rcu_is_watching+0x1c/0x40 [24581.707699] ? lock_acquire+0x8a/0x110 [24581.708414] ? schedule+0x91/0x130 [24581.709062] ? __wait_for_common+0x228/0x330 [24581.709871] schedule+0x60/0x130 [24581.710506] schedule_timeout+0x18f/0x210 [24581.711258] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.712164] ? btrfs_calculate_block_csum_pages+0x17a/0x1d0 [btrfs] [24581.713525] ? lock_acquire+0x8a/0x110 [24581.714249] ? __wait_for_common+0x99/0x330 [24581.715022] ? rcu_is_watching+0x1c/0x40 [24581.715771] __wait_for_common+0x260/0x330 [24581.716519] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.717400] ? bit_wait_timeout+0xc0/0xc0 [24581.718163] ? start_flush_work+0x3f9/0x6e0 [24581.718947] ? start_flush_work+0x403/0x6e0 [24581.719742] __flush_work+0x122/0x190 [24581.720448] ? start_flush_work+0x6e0/0x6e0 [24581.721212] ? csum_one_bio+0x309/0x390 [btrfs] [24581.722332] ? flush_workqueue_prep_pwqs+0x280/0x280 [24581.723223] ? __might_resched+0x16a/0x250 [24581.723994] ? rcu_read_unlock+0x80/0x80 [24581.724727] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [24581.725892] process_one_work+0x4e6/0xa00 [24581.726648] ? pwq_dec_nr_in_flight+0x260/0x260 [24581.727486] ? __list_add_valid_or_report+0x3b/0xb0 [24581.728372] worker_thread+0x3b7/0x6b0 [24581.729078] ? __kthread_parkme+0x108/0x130 [24581.729873] ? process_one_work+0xa00/0xa00 [24581.730640] kthread+0x221/0x3c0 [24581.731275] ? kthread+0x128/0x3c0 [24581.731947] ? trace_hardirqs_on+0x12/0xf0 [24581.732703] ? kthread_is_per_cpu+0x60/0x60 [24581.733477] ? lock_acquire+0x8a/0x110 [24581.734192] ? calculate_sigpending+0x2a/0x60 [24581.735002] ? kthread_is_per_cpu+0x60/0x60 [24581.735800] ret_from_fork+0x280/0x2f0 [24581.736502] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [24581.737505] ? __switch_to+0x298/0x6f0 [24581.738225] ? kthread_is_per_cpu+0x60/0x60 [24581.739011] ret_from_fork_asm+0x11/0x20 [24581.739762] </TASK> [24581.740233] INFO: task kworker/u16:7:15420 blocked for more than 491 seconds. [24581.741436] Not tainted 6.19.0-rc4-default+ #2633 [24581.742377] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [24581.743750] task:kworker/u16:7 state:D stack:23976 pid:15420 tgid:15420 ppid:2 task_flags:0x4208060 flags:0x00080000 [24581.745622] Workqueue: btrfs-endio simple_end_io_work [btrfs] [24581.746955] Call Trace: [24581.747485] <TASK> [24581.747959] __schedule+0x726/0xe50 [24581.748641] ? io_schedule_timeout+0xb0/0xb0 [24581.749422] ? stack_depot_save_flags+0x3b/0x670 [24581.750267] ? rcu_is_watching+0x1c/0x40 [24581.751002] ? lock_acquire+0x8a/0x110 [24581.751743] ? schedule+0x91/0x130 [24581.752411] ? __wait_for_common+0x228/0x330 [24581.753194] schedule+0x60/0x130 [24581.753850] schedule_timeout+0x18f/0x210 [24581.754604] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.755491] ? lock_acquire+0x8a/0x110 [24581.756191] ? __wait_for_common+0x99/0x330 [24581.756969] ? rcu_is_watching+0x1c/0x40 [24581.757710] __wait_for_common+0x260/0x330 [24581.758494] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.759384] ? bit_wait_timeout+0xc0/0xc0 [24581.760136] ? start_flush_work+0x3f9/0x6e0 [24581.760900] ? start_flush_work+0x403/0x6e0 [24581.761659] __flush_work+0x122/0x190 [24581.762382] ? start_flush_work+0x6e0/0x6e0 [24581.763152] ? __call_rcu_common.constprop.0+0x269/0x450 [24581.764084] ? flush_workqueue_prep_pwqs+0x280/0x280 [24581.764976] ? __might_resched+0x16a/0x250 [24581.765749] ? rcu_read_unlock+0x80/0x80 [24581.766486] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [24581.767640] process_one_work+0x4e6/0xa00 [24581.768389] ? pwq_dec_nr_in_flight+0x260/0x260 [24581.769214] ? do_raw_spin_lock+0x10b/0x1a0 [24581.770007] ? __list_add_valid_or_report+0x3b/0xb0 [24581.770881] worker_thread+0x3b7/0x6b0 [24581.771601] ? __kthread_parkme+0x108/0x130 [24581.772379] ? process_one_work+0xa00/0xa00 [24581.773139] kthread+0x221/0x3c0 [24581.773789] ? kthread+0x128/0x3c0 [24581.774455] ? trace_hardirqs_on+0x12/0xf0 [24581.775208] ? kthread_is_per_cpu+0x60/0x60 [24581.775985] ? lock_acquire+0x8a/0x110 [24581.776691] ? calculate_sigpending+0x2a/0x60 [24581.777492] ? kthread_is_per_cpu+0x60/0x60 [24581.778278] ret_from_fork+0x280/0x2f0 [24581.778981] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [24581.780002] ? __switch_to+0x298/0x6f0 [24581.780708] ? kthread_is_per_cpu+0x60/0x60 [24581.781482] ret_from_fork_asm+0x11/0x20 [24581.782243] </TASK> [24581.782730] INFO: task kworker/u16:14:15426 blocked for more than 491 seconds. [24581.784032] Not tainted 6.19.0-rc4-default+ #2633 [24581.784949] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [24581.786327] task:kworker/u16:14 state:D stack:24120 pid:15426 tgid:15426 ppid:2 task_flags:0x4208060 flags:0x00080000 [24581.788188] Workqueue: btrfs-endio simple_end_io_work [btrfs] [24581.789492] Call Trace: [24581.790025] <TASK> [24581.790491] __schedule+0x726/0xe50 [24581.791164] ? io_schedule_timeout+0xb0/0xb0 [24581.791976] ? btrfs_work_helper+0x137/0x3e0 [btrfs] [24581.793159] ? worker_thread+0x3b7/0x6b0 [24581.793899] ? kthread+0x221/0x3c0 [24581.794567] ? ret_from_fork+0x280/0x2f0 [24581.795297] ? rcu_is_watching+0x1c/0x40 [24581.796040] ? lock_acquire+0x8a/0x110 [24581.796735] ? schedule+0x91/0x130 [24581.797389] ? __wait_for_common+0x228/0x330 [24581.798185] schedule+0x60/0x130 [24581.798826] schedule_timeout+0x18f/0x210 [24581.799586] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.800477] ? btrfs_calculate_block_csum_pages+0x17a/0x1d0 [btrfs] [24581.801867] ? lock_acquire+0x8a/0x110 [24581.802575] ? __wait_for_common+0x99/0x330 [24581.803344] ? rcu_is_watching+0x1c/0x40 [24581.804153] __wait_for_common+0x260/0x330 [24581.804922] ? hrtimer_nanosleep_restart+0x240/0x240 [24581.805831] ? bit_wait_timeout+0xc0/0xc0 [24581.806595] ? start_flush_work+0x3f9/0x6e0 [24581.807374] ? start_flush_work+0x403/0x6e0 [24581.808153] __flush_work+0x122/0x190 [24581.808849] ? start_flush_work+0x6e0/0x6e0 [24581.809620] ? csum_one_bio+0x309/0x390 [btrfs] [24581.810754] ? flush_workqueue_prep_pwqs+0x280/0x280 [24581.811660] ? __might_resched+0x16a/0x250 [24581.812422] ? rcu_read_unlock+0x80/0x80 [24581.813161] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [24581.817285] process_one_work+0x4e6/0xa00 [24581.818067] ? pwq_dec_nr_in_flight+0x260/0x260 [24581.818897] ? __list_add_valid_or_report+0x3b/0xb0 [24581.819791] worker_thread+0x3b7/0x6b0 [24581.820508] ? __kthread_parkme+0x108/0x130 [24581.821278] ? process_one_work+0xa00/0xa00 [24581.822074] kthread+0x221/0x3c0 [24581.822723] ? kthread+0x128/0x3c0 [24581.823382] ? trace_hardirqs_on+0x12/0xf0 [24581.824150] ? kthread_is_per_cpu+0x60/0x60 [24581.824929] ? lock_acquire+0x8a/0x110 [24581.825647] ? calculate_sigpending+0x2a/0x60 [24581.826466] ? kthread_is_per_cpu+0x60/0x60 [24581.827247] ret_from_fork+0x280/0x2f0 [24581.827970] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [24581.828987] ? __switch_to+0x298/0x6f0 [24581.829704] ? kthread_is_per_cpu+0x60/0x60 [24581.830483] ret_from_fork_asm+0x11/0x20 [24581.831234] </TASK> [24581.831732] INFO: lockdep is turned off. [25073.053815] INFO: task kworker/u16:5:19550 blocked for more than 983 seconds. [25073.056167] Not tainted 6.19.0-rc4-default+ #2633 [25073.057930] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [25073.060416] task:kworker/u16:5 state:D stack:22528 pid:19550 tgid:19550 ppid:2 task_flags:0x4208060 flags:0x00080000 [25073.063901] Workqueue: btrfs-endio simple_end_io_work [btrfs] [25073.066324] Call Trace: [25073.067271] <TASK> [25073.068097] __schedule+0x726/0xe50 [25073.069340] ? io_schedule_timeout+0xb0/0xb0 [25073.070794] ? crc32c+0x130/0x180 [25073.071962] ? rcu_is_watching+0x1c/0x40 [25073.073296] ? lock_acquire+0x8a/0x110 [25073.074597] ? schedule+0x91/0x130 [25073.075782] ? __wait_for_common+0x228/0x330 [25073.077226] schedule+0x60/0x130 [25073.078427] schedule_timeout+0x18f/0x210 [25073.079791] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.081412] ? btrfs_calculate_block_csum_pages+0x17a/0x1d0 [btrfs] [25073.083915] ? lock_acquire+0x8a/0x110 [25073.085212] ? __wait_for_common+0x99/0x330 [25073.086636] ? rcu_is_watching+0x1c/0x40 [25073.087987] __wait_for_common+0x260/0x330 [25073.089367] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.091031] ? bit_wait_timeout+0xc0/0xc0 [25073.092386] ? start_flush_work+0x3f9/0x6e0 [25073.093804] ? start_flush_work+0x403/0x6e0 [25073.095219] __flush_work+0x122/0x190 [25073.096510] ? start_flush_work+0x6e0/0x6e0 [25073.097867] ? csum_one_bio+0x309/0x390 [btrfs] [25073.099708] ? flush_workqueue_prep_pwqs+0x280/0x280 [25073.101193] ? __might_resched+0x16a/0x250 [25073.102398] ? rcu_read_unlock+0x80/0x80 [25073.103530] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [25073.105281] process_one_work+0x4e6/0xa00 [25073.106394] ? pwq_dec_nr_in_flight+0x260/0x260 [25073.107617] ? __list_add_valid_or_report+0x3b/0xb0 [25073.108876] worker_thread+0x3b7/0x6b0 [25073.109854] ? __kthread_parkme+0x108/0x130 [25073.110902] ? process_one_work+0xa00/0xa00 [25073.111931] kthread+0x221/0x3c0 [25073.112780] ? kthread+0x128/0x3c0 [25073.113623] ? trace_hardirqs_on+0x12/0xf0 [25073.114602] ? kthread_is_per_cpu+0x60/0x60 [25073.115569] ? lock_acquire+0x8a/0x110 [25073.116461] ? calculate_sigpending+0x2a/0x60 [25073.117485] ? kthread_is_per_cpu+0x60/0x60 [25073.118420] ret_from_fork+0x280/0x2f0 [25073.119256] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [25073.120481] ? __switch_to+0x298/0x6f0 [25073.121311] ? kthread_is_per_cpu+0x60/0x60 [25073.122212] ret_from_fork_asm+0x11/0x20 [25073.123056] </TASK> [25073.123597] INFO: task kworker/u16:16:3517 blocked for more than 983 seconds. [25073.124997] Not tainted 6.19.0-rc4-default+ #2633 [25073.126044] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [25073.127585] task:kworker/u16:16 state:D stack:21432 pid:3517 tgid:3517 ppid:2 task_flags:0x4208060 flags:0x00080000 [25073.129626] Workqueue: btrfs-endio simple_end_io_work [btrfs] [25073.131008] Call Trace: [25073.131546] <TASK> [25073.132041] __schedule+0x726/0xe50 [25073.132775] ? io_schedule_timeout+0xb0/0xb0 [25073.133590] ? stack_depot_save_flags+0x3b/0x670 [25073.134478] ? rcu_is_watching+0x1c/0x40 [25073.135261] ? lock_acquire+0x8a/0x110 [25073.136009] ? schedule+0x91/0x130 [25073.136709] ? __wait_for_common+0x228/0x330 [25073.137559] schedule+0x60/0x130 [25073.138236] schedule_timeout+0x18f/0x210 [25073.139015] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.139921] ? lock_acquire+0x8a/0x110 [25073.140658] ? __wait_for_common+0x99/0x330 [25073.141467] ? rcu_is_watching+0x1c/0x40 [25073.142242] __wait_for_common+0x260/0x330 [25073.143034] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.143965] ? bit_wait_timeout+0xc0/0xc0 [25073.144759] ? start_flush_work+0x3f9/0x6e0 [25073.145564] ? start_flush_work+0x403/0x6e0 [25073.146381] __flush_work+0x122/0x190 [25073.147120] ? start_flush_work+0x6e0/0x6e0 [25073.147926] ? __call_rcu_common.constprop.0+0x269/0x450 [25073.148895] ? flush_workqueue_prep_pwqs+0x280/0x280 [25073.149823] ? __might_resched+0x16a/0x250 [25073.150632] ? rcu_read_unlock+0x80/0x80 [25073.151404] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [25073.152599] process_one_work+0x4e6/0xa00 [25073.153368] ? pwq_dec_nr_in_flight+0x260/0x260 [25073.154239] ? __list_add_valid_or_report+0x3b/0xb0 [25073.155142] worker_thread+0x3b7/0x6b0 [25073.155876] ? __kthread_parkme+0x108/0x130 [25073.156667] ? process_one_work+0xa00/0xa00 [25073.157467] kthread+0x221/0x3c0 [25073.158163] ? kthread+0x128/0x3c0 [25073.158839] ? trace_hardirqs_on+0x12/0xf0 [25073.159622] ? kthread_is_per_cpu+0x60/0x60 [25073.160403] ? lock_acquire+0x8a/0x110 [25073.161129] ? calculate_sigpending+0x2a/0x60 [25073.161960] ? kthread_is_per_cpu+0x60/0x60 [25073.162769] ret_from_fork+0x280/0x2f0 [25073.163490] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [25073.164535] ? __switch_to+0x298/0x6f0 [25073.165252] ? kthread_is_per_cpu+0x60/0x60 [25073.166054] ret_from_fork_asm+0x11/0x20 [25073.166801] </TASK> [25073.167308] INFO: task kworker/u16:20:18839 blocked for more than 983 seconds. [25073.168608] Not tainted 6.19.0-rc4-default+ #2633 [25073.169548] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [25073.170949] task:kworker/u16:20 state:D stack:23112 pid:18839 tgid:18839 ppid:2 task_flags:0x4208060 flags:0x00080000 [25073.172880] Workqueue: btrfs-endio simple_end_io_work [btrfs] [25073.174213] Call Trace: [25073.174735] <TASK> [25073.175215] __schedule+0x726/0xe50 [25073.175900] ? io_schedule_timeout+0xb0/0xb0 [25073.176710] ? stack_depot_save_flags+0x3b/0x670 [25073.177577] ? rcu_is_watching+0x1c/0x40 [25073.178334] ? lock_acquire+0x8a/0x110 [25073.179041] ? schedule+0x91/0x130 [25073.179703] ? __wait_for_common+0x228/0x330 [25073.180508] schedule+0x60/0x130 [25073.181159] schedule_timeout+0x18f/0x210 [25073.181931] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.182839] ? btrfs_calculate_block_csum_pages+0x17a/0x1d0 [btrfs] [25073.184209] ? lock_acquire+0x8a/0x110 [25073.184928] ? __wait_for_common+0x99/0x330 [25073.185713] ? rcu_is_watching+0x1c/0x40 [25073.186460] __wait_for_common+0x260/0x330 [25073.187223] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.188143] ? bit_wait_timeout+0xc0/0xc0 [25073.188900] ? start_flush_work+0x3f9/0x6e0 [25073.189715] ? start_flush_work+0x403/0x6e0 [25073.190494] __flush_work+0x122/0x190 [25073.191212] ? start_flush_work+0x6e0/0x6e0 [25073.192006] ? csum_one_bio+0x309/0x390 [btrfs] [25073.193134] ? flush_workqueue_prep_pwqs+0x280/0x280 [25073.194052] ? __might_resched+0x16a/0x250 [25073.194806] ? rcu_read_unlock+0x80/0x80 [25073.195537] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [25073.196698] process_one_work+0x4e6/0xa00 [25073.197449] ? pwq_dec_nr_in_flight+0x260/0x260 [25073.198283] ? __list_add_valid_or_report+0x3b/0xb0 [25073.199194] worker_thread+0x3b7/0x6b0 [25073.199918] ? __kthread_parkme+0x108/0x130 [25073.200694] ? process_one_work+0xa00/0xa00 [25073.201463] kthread+0x221/0x3c0 [25073.202111] ? kthread+0x128/0x3c0 [25073.202784] ? trace_hardirqs_on+0x12/0xf0 [25073.203541] ? kthread_is_per_cpu+0x60/0x60 [25073.204308] ? lock_acquire+0x8a/0x110 [25073.205025] ? calculate_sigpending+0x2a/0x60 [25073.205834] ? kthread_is_per_cpu+0x60/0x60 [25073.206607] ret_from_fork+0x280/0x2f0 [25073.207330] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [25073.208342] ? __switch_to+0x298/0x6f0 [25073.209067] ? kthread_is_per_cpu+0x60/0x60 [25073.212777] ret_from_fork_asm+0x11/0x20 [25073.213526] </TASK> [25073.214018] INFO: task kworker/u16:17:27479 blocked for more than 983 seconds. [25073.215308] Not tainted 6.19.0-rc4-default+ #2633 [25073.216226] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [25073.217595] task:kworker/u16:17 state:D stack:23112 pid:27479 tgid:27479 ppid:2 task_flags:0x4208060 flags:0x00080000 [25073.219481] Workqueue: btrfs-endio simple_end_io_work [btrfs] [25073.220790] Call Trace: [25073.221303] <TASK> [25073.221790] __schedule+0x726/0xe50 [25073.222465] ? io_schedule_timeout+0xb0/0xb0 [25073.223253] ? rcu_is_watching+0x1c/0x40 [25073.223981] ? lock_acquire+0x8a/0x110 [25073.224700] ? schedule+0x91/0x130 [25073.225351] ? __wait_for_common+0x228/0x330 [25073.226167] schedule+0x60/0x130 [25073.226804] schedule_timeout+0x18f/0x210 [25073.227543] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.228420] ? btrfs_calculate_block_csum_pages+0x17a/0x1d0 [btrfs] [25073.229806] ? lock_acquire+0x8a/0x110 [25073.230516] ? __wait_for_common+0x99/0x330 [25073.231281] ? rcu_is_watching+0x1c/0x40 [25073.232023] __wait_for_common+0x260/0x330 [25073.232786] ? hrtimer_nanosleep_restart+0x240/0x240 [25073.233699] ? bit_wait_timeout+0xc0/0xc0 [25073.234452] ? start_flush_work+0x3f9/0x6e0 [25073.235213] ? start_flush_work+0x403/0x6e0 [25073.235982] __flush_work+0x122/0x190 [25073.236694] ? start_flush_work+0x6e0/0x6e0 [25073.237468] ? csum_one_bio+0x309/0x390 [btrfs] [25073.238591] ? flush_workqueue_prep_pwqs+0x280/0x280 [25073.239497] ? __might_resched+0x16a/0x250 [25073.240261] ? rcu_read_unlock+0x80/0x80 [25073.241016] btrfs_bio_end_io+0x139/0x1a0 [btrfs] [25073.242202] process_one_work+0x4e6/0xa00 [25073.242958] ? pwq_dec_nr_in_flight+0x260/0x260 [25073.243802] ? __list_add_valid_or_report+0x3b/0xb0 [25073.244690] worker_thread+0x3b7/0x6b0 [25073.245396] ? __kthread_parkme+0x108/0x130 [25073.246222] ? process_one_work+0xa00/0xa00 [25073.247019] kthread+0x221/0x3c0 [25073.247651] ? kthread+0x128/0x3c0 [25073.248316] ? trace_hardirqs_on+0x12/0xf0 [25073.249085] ? kthread_is_per_cpu+0x60/0x60 [25073.249871] ? lock_acquire+0x8a/0x110 [25073.250595] ? calculate_sigpending+0x2a/0x60 [25073.251406] ? kthread_is_per_cpu+0x60/0x60 [25073.252188] ret_from_fork+0x280/0x2f0 [25073.252897] ? arch_exit_to_user_mode_prepare.isra.0+0xb0/0xb0 [25073.253913] ? __switch_to+0x298/0x6f0 [25073.254621] ? kthread_is_per_cpu+0x60/0x60 [25073.255392] ret_from_fork_asm+0x11/0x20 [25073.256124] </TASK> [25073.256602] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings [25073.258051] INFO: lockdep is turned off.
Powered by blists - more mailing lists