Re: 6.5.0rc5 fs hang - ext4? raid?

Dr. David Alan Gilbert
2023-08-15T12:24:22Z

* Yu Kuai (yukuai1@huaweicloud.com) wrote:
> Hi,
>
> 在 2023/08/15 5:02, Dr. David Alan Gilbert 写道:
> > Hi,
> > I'm seeing a few hangs on a fs after upgrading to fedora 39's bleeding
> > edge; which is running kernel 6.5.0-0.rc5.20230808git14f9643dc90a.37.fc39.x86_64
> > It was always solid prior to that. It seems to trigger on heavy IO
> > on this fs.
> >
> > The stack of this fs is:
> > spinning rust on SATA
> > LVM RAID 1
> > ext4
> >
> > The host is a Ryzen 3950X.
> >
> > Below is a sysrq backtrace of blocked tasks; this happened with
> > rhythmbox playing audio off the fs, while a meson build ran.
> > There was no oops or anything, just all the tasks on the fs hung.
> >
> > I've got another case now where the only interesting thing running
> > is an 'ag' (parallel grep) running over the kernel tree.
> > (Anything not on that fs still seems to be running OK)
> >
> > So it seems easy to trigger for me.
> >
> > NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
> > sda 8:0 0 3.6T 0 disk
> > ├─sda1 8:1 0 1G 0 part
> > └─sda2 8:2 0 3.6T 0 part
> > ...
> > ├─main-more_rmeta_0 253:16 0 4M 0 lvm
> > │ └─main-more 253:20 0 900G 0 lvm /discs/more
> > ├─main-more_rimage_0 253:17 0 900G 0 lvm
> > │ └─main-more 253:20 0 900G 0 lvm /discs/more
> >
> > sdb 8:16 0 3.6T 0 disk
> > ├─sdb1 8:17 0 1G 0 part
> > └─sdb2 8:18 0 3.6T 0 part
> > ├─main-more_rmeta_1 253:18 0 4M 0 lvm
> > │ └─main-more 253:20 0 900G 0 lvm /discs/more
> > ├─main-more_rimage_1 253:19 0 900G 0 lvm
> > │ └─main-more 253:20 0 900G 0 lvm /discs/more
> >
>
> Can you stop all the test, and then collect the result of sda/sdb
> debugfs?

Sure, in this case I had rhythmbox running, and ran 'ag' across
a kernel tree; the ag hung after a few seconds. I quit rhythmbox
and it allowed me to ctrl-c ag (which i don't think it let me last
time); then I gathered the following.

> You can use the following cmd to collect result:
>
> find /sys/kernel/debug/block/sda/ -type f | xargs grep .

/sys/kernel/debug/block/sda/rqos/wbt/wb_background:4
/sys/kernel/debug/block/sda/rqos/wbt/wb_normal:8
/sys/kernel/debug/block/sda/rqos/wbt/unknown_cnt:0
/sys/kernel/debug/block/sda/rqos/wbt/min_lat_nsec:75000000
/sys/kernel/debug/block/sda/rqos/wbt/inflight:0: inflight 0
/sys/kernel/debug/block/sda/rqos/wbt/inflight:1: inflight 0
/sys/kernel/debug/block/sda/rqos/wbt/inflight:2: inflight 0
/sys/kernel/debug/block/sda/rqos/wbt/id:0
/sys/kernel/debug/block/sda/rqos/wbt/enabled:3
/sys/kernel/debug/block/sda/rqos/wbt/curr_win_nsec:0
/sys/kernel/debug/block/sda/hctx0/type:default
/sys/kernel/debug/block/sda/hctx0/dispatch_busy:0
/sys/kernel/debug/block/sda/hctx0/active:0
/sys/kernel/debug/block/sda/hctx0/run:20643
/sys/kernel/debug/block/sda/hctx0/sched_tags_bitmap:00000000: 0000 0000 0000 0000
/sys/kernel/debug/block/sda/hctx0/sched_tags:nr_tags=64
/sys/kernel/debug/block/sda/hctx0/sched_tags:nr_reserved_tags=0
/sys/kernel/debug/block/sda/hctx0/sched_tags:active_queues=0
/sys/kernel/debug/block/sda/hctx0/sched_tags:bitmap_tags:
/sys/kernel/debug/block/sda/hctx0/sched_tags:depth=64
/sys/kernel/debug/block/sda/hctx0/sched_tags:busy=0
/sys/kernel/debug/block/sda/hctx0/sched_tags:cleared=21
/sys/kernel/debug/block/sda/hctx0/sched_tags:bits_per_word=16
/sys/kernel/debug/block/sda/hctx0/sched_tags:map_nr=4
/sys/kernel/debug/block/sda/hctx0/sched_tags:alloc_hint={56, 36, 23, 58, 39, 16, 51, 39, 29, 19, 58, 30, 46, 12, 15, 44, 13, 5, 2, 19, 3, 21, 2, 7, 39, 58, 14, 17, 3, 42, 38, 5}
/sys/kernel/debug/block/sda/hctx0/sched_tags:wake_batch=1
/sys/kernel/debug/block/sda/hctx0/sched_tags:wake_index=6
/sys/kernel/debug/block/sda/hctx0/sched_tags:ws_active=0
/sys/kernel/debug/block/sda/hctx0/sched_tags:ws={
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/sched_tags:}
/sys/kernel/debug/block/sda/hctx0/sched_tags:round_robin=1
/sys/kernel/debug/block/sda/hctx0/sched_tags:min_shallow_depth=1
/sys/kernel/debug/block/sda/hctx0/tags_bitmap:00000000: 0000 0000
/sys/kernel/debug/block/sda/hctx0/tags:nr_tags=32
/sys/kernel/debug/block/sda/hctx0/tags:nr_reserved_tags=0
/sys/kernel/debug/block/sda/hctx0/tags:active_queues=0
/sys/kernel/debug/block/sda/hctx0/tags:bitmap_tags:
/sys/kernel/debug/block/sda/hctx0/tags:depth=32
/sys/kernel/debug/block/sda/hctx0/tags:busy=0
/sys/kernel/debug/block/sda/hctx0/tags:cleared=16
/sys/kernel/debug/block/sda/hctx0/tags:bits_per_word=8
/sys/kernel/debug/block/sda/hctx0/tags:map_nr=4
/sys/kernel/debug/block/sda/hctx0/tags:alloc_hint={23, 2, 21, 9, 27, 15, 9, 23, 16, 20, 10, 23, 14, 11, 3, 5, 25, 8, 8, 18, 18, 0, 3, 18, 28, 15, 16, 23, 1, 1, 16, 17}
/sys/kernel/debug/block/sda/hctx0/tags:wake_batch=4
/sys/kernel/debug/block/sda/hctx0/tags:wake_index=0
/sys/kernel/debug/block/sda/hctx0/tags:ws_active=0
/sys/kernel/debug/block/sda/hctx0/tags:ws={
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sda/hctx0/tags:}
/sys/kernel/debug/block/sda/hctx0/tags:round_robin=1
/sys/kernel/debug/block/sda/hctx0/tags:min_shallow_depth=4294967295
/sys/kernel/debug/block/sda/hctx0/ctx_map:00000000: 0000 0000
/sys/kernel/debug/block/sda/hctx0/flags:alloc_policy=RR SHOULD_MERGE
/sys/kernel/debug/block/sda/state:SAME_COMP|IO_STAT|ADD_RANDOM|INIT_DONE|WC|STATS|REGISTERED|NOWAIT|SQ_SCHED
/sys/kernel/debug/block/sda/pm_only:0

/sys/kernel/debug/block/sdb/rqos/wbt/wb_background:4
/sys/kernel/debug/block/sdb/rqos/wbt/wb_normal:8
/sys/kernel/debug/block/sdb/rqos/wbt/unknown_cnt:0
/sys/kernel/debug/block/sdb/rqos/wbt/min_lat_nsec:75000000
/sys/kernel/debug/block/sdb/rqos/wbt/inflight:0: inflight 0
/sys/kernel/debug/block/sdb/rqos/wbt/inflight:1: inflight 0
/sys/kernel/debug/block/sdb/rqos/wbt/inflight:2: inflight 0
/sys/kernel/debug/block/sdb/rqos/wbt/id:0
/sys/kernel/debug/block/sdb/rqos/wbt/enabled:3
/sys/kernel/debug/block/sdb/rqos/wbt/curr_win_nsec:0
/sys/kernel/debug/block/sdb/hctx0/type:default
/sys/kernel/debug/block/sdb/hctx0/dispatch_busy:3
/sys/kernel/debug/block/sdb/hctx0/active:0
/sys/kernel/debug/block/sdb/hctx0/run:113904
/sys/kernel/debug/block/sdb/hctx0/sched_tags_bitmap:00000000: 8000 1500 0520 0000
/sys/kernel/debug/block/sdb/hctx0/sched_tags:nr_tags=64
/sys/kernel/debug/block/sdb/hctx0/sched_tags:nr_reserved_tags=0
/sys/kernel/debug/block/sdb/hctx0/sched_tags:active_queues=0
/sys/kernel/debug/block/sdb/hctx0/sched_tags:bitmap_tags:
/sys/kernel/debug/block/sdb/hctx0/sched_tags:depth=64
/sys/kernel/debug/block/sdb/hctx0/sched_tags:busy=7
/sys/kernel/debug/block/sdb/hctx0/sched_tags:cleared=19
/sys/kernel/debug/block/sdb/hctx0/sched_tags:bits_per_word=16
/sys/kernel/debug/block/sdb/hctx0/sched_tags:map_nr=4
/sys/kernel/debug/block/sdb/hctx0/sched_tags:alloc_hint={17, 46, 8, 56, 4, 33, 35, 44, 58, 42, 46, 38, 6, 10, 3, 2, 13, 6, 0, 54, 19, 21, 3, 21, 29, 61, 0, 19, 7, 25, 46, 0}
/sys/kernel/debug/block/sdb/hctx0/sched_tags:wake_batch=1
/sys/kernel/debug/block/sdb/hctx0/sched_tags:wake_index=4
/sys/kernel/debug/block/sdb/hctx0/sched_tags:ws_active=0
/sys/kernel/debug/block/sdb/hctx0/sched_tags:ws={
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/sched_tags:}
/sys/kernel/debug/block/sdb/hctx0/sched_tags:round_robin=1
/sys/kernel/debug/block/sdb/hctx0/sched_tags:min_shallow_depth=1
/sys/kernel/debug/block/sdb/hctx0/tags_bitmap:00000000: 0000 0000
/sys/kernel/debug/block/sdb/hctx0/tags:nr_tags=32
/sys/kernel/debug/block/sdb/hctx0/tags:nr_reserved_tags=0
/sys/kernel/debug/block/sdb/hctx0/tags:active_queues=0
/sys/kernel/debug/block/sdb/hctx0/tags:bitmap_tags:
/sys/kernel/debug/block/sdb/hctx0/tags:depth=32
/sys/kernel/debug/block/sdb/hctx0/tags:busy=0
/sys/kernel/debug/block/sdb/hctx0/tags:cleared=19
/sys/kernel/debug/block/sdb/hctx0/tags:bits_per_word=8
/sys/kernel/debug/block/sdb/hctx0/tags:map_nr=4
/sys/kernel/debug/block/sdb/hctx0/tags:alloc_hint={14, 6, 22, 11, 0, 8, 20, 6, 18, 14, 26, 16, 9, 6, 16, 5, 7, 15, 27, 2, 2, 16, 3, 3, 2, 12, 23, 1, 7, 15, 20, 0}
/sys/kernel/debug/block/sdb/hctx0/tags:wake_batch=4
/sys/kernel/debug/block/sdb/hctx0/tags:wake_index=0
/sys/kernel/debug/block/sdb/hctx0/tags:ws_active=0
/sys/kernel/debug/block/sdb/hctx0/tags:ws={
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags: {.wait=inactive},
/sys/kernel/debug/block/sdb/hctx0/tags:}
/sys/kernel/debug/block/sdb/hctx0/tags:round_robin=1
/sys/kernel/debug/block/sdb/hctx0/tags:min_shallow_depth=4294967295
/sys/kernel/debug/block/sdb/hctx0/ctx_map:00000000: 0000 0000
/sys/kernel/debug/block/sdb/hctx0/flags:alloc_policy=RR SHOULD_MERGE
/sys/kernel/debug/block/sdb/state:SAME_COMP|IO_STAT|ADD_RANDOM|INIT_DONE|WC|STATS|REGISTERED|NOWAIT|SQ_SCHED
/sys/kernel/debug/block/sdb/pm_only:0
>
> Thanks,
> Kuai
>
> > Dave
> >
> > dg 29594 29592 0 18:40 pts/0 00:00:00 /usr/bin/ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/13/liblto_plugin.so -csrDT src/intel/perf/libintel_perf.a src/intel/perf/libintel_perf.a.p/meson-generated_.._intel_perf_metrics.c.o src/intel/perf/libintel_perf.a.p/intel_perf.c.o src/intel/perf/libintel_perf.a.p/intel_perf_query.c.o src/intel/perf/libintel_perf.a.p/intel_perf_mdapi.c.o
> >
> > [root@dalek dg]# cat /proc/29594/stack
> > [<0>] md_super_wait+0xa2/0xe0
> > [<0>] md_bitmap_unplug+0xd2/0x120
> > [<0>] flush_bio_list+0xf3/0x100 [raid1]
> > [<0>] raid1_unplug+0x3b/0xb0 [raid1]
> > [<0>] __blk_flush_plug+0xd7/0x150
> > [<0>] blk_finish_plug+0x29/0x40
> > [<0>] ext4_do_writepages+0x401/0xc90
> > [<0>] ext4_writepages+0xad/0x180
> > [<0>] do_writepages+0xd2/0x1e0
> > [<0>] filemap_fdatawrite_wbc+0x63/0x90
> > [<0>] __filemap_fdatawrite_range+0x5c/0x80
> > [<0>] ext4_release_file+0x74/0xb0
> > [<0>] __fput+0xf5/0x2a0
> > [<0>] task_work_run+0x5d/0x90
> > [<0>] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [<0>] syscall_exit_to_user_mode+0x1b/0x40
> > [<0>] do_syscall_64+0x6c/0x90
> > [<0>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > lvs -a hanging
> >
> > 6.5.0-0.rc5.20230808git14f9643dc90a.37.fc39.x86_64
> > root 29780 29658 0 18:44 pts/5 00:00:00 [lvs]
> >
> > [root@dalek dg]# cat /proc/29780/stack
> > [<0>] exit_aio+0x10d/0x120
> > [<0>] __mmput+0x12/0x130
> > [<0>] do_exit+0x305/0xb10
> > [<0>] do_group_exit+0x31/0x80
> > [<0>] get_signal+0x9a5/0x9e0
> > [<0>] arch_do_signal_or_restart+0x3e/0x270
> > [<0>] exit_to_user_mode_prepare+0x195/0x1f0
> > [<0>] syscall_exit_to_user_mode+0x1b/0x40
> > [<0>] do_syscall_64+0x6c/0x90
> > [<0>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> >
> > [15884.105052] sysrq: Show Blocked State
> > [15884.105917] task:mdX_raid1 state:D stack:0 pid:1492 ppid:2 flags:0x00004000
> > [15884.105924] Call Trace:
> > [15884.105927] <TASK>
> > [15884.105932] __schedule+0x3ee/0x14c0
> > [15884.105940] ? ttwu_do_activate+0x64/0x220
> > [15884.105947] ? sysvec_apic_timer_interrupt+0xe/0x90
> > [15884.105952] schedule+0x5e/0xd0
> > [15884.105955] md_super_wait+0xa2/0xe0
> > [15884.105960] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.105966] md_bitmap_daemon_work+0x183/0x3b0
> > [15884.105971] ? __pfx_md_thread+0x10/0x10
> > [15884.105974] md_check_recovery+0x42/0x5a0
> > [15884.105981] raid1d+0x87/0x16f0 [raid1]
> > [15884.105990] ? __pfx_md_thread+0x10/0x10
> > [15884.105993] ? __schedule+0x3f6/0x14c0
> > [15884.105996] ? psi_task_switch+0x84/0x230
> > [15884.106001] ? lock_timer_base+0x61/0x80
> > [15884.106007] ? prepare_to_wait_event+0x60/0x180
> > [15884.106011] ? __pfx_md_thread+0x10/0x10
> > [15884.106014] md_thread+0xae/0x190
> > [15884.106017] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.106022] kthread+0xe8/0x120
> > [15884.106027] ? __pfx_kthread+0x10/0x10
> > [15884.106031] ret_from_fork+0x34/0x50
> > [15884.106036] ? __pfx_kthread+0x10/0x10
> > [15884.106041] ret_from_fork_asm+0x1b/0x30
> > [15884.106049] </TASK>
> > [15884.106057] task:jbd2/dm-20-8 state:D stack:0 pid:1536 ppid:2 flags:0x00004000
> > [15884.106063] Call Trace:
> > [15884.106064] <TASK>
> > [15884.106066] __schedule+0x3ee/0x14c0
> > [15884.106070] ? dm_submit_bio+0x3aa/0x620
> > [15884.106077] schedule+0x5e/0xd0
> > [15884.106080] io_schedule+0x46/0x70
> > [15884.106083] bit_wait_io+0x11/0x70
> > [15884.106087] __wait_on_bit+0x46/0x140
> > [15884.106090] ? __pfx_bit_wait_io+0x10/0x10
> > [15884.106095] out_of_line_wait_on_bit+0x95/0xc0
> > [15884.106099] ? __pfx_wake_bit_function+0x10/0x10
> > [15884.106103] jbd2_journal_commit_transaction+0x162d/0x1a10
> > [15884.106117] kjournald2+0xad/0x280
> > [15884.106121] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.106126] ? __pfx_kjournald2+0x10/0x10
> > [15884.106129] kthread+0xe8/0x120
> > [15884.106133] ? __pfx_kthread+0x10/0x10
> > [15884.106138] ret_from_fork+0x34/0x50
> > [15884.106141] ? __pfx_kthread+0x10/0x10
> > [15884.106145] ret_from_fork_asm+0x1b/0x30
> > [15884.106152] </TASK>
> > [15884.106478] task:oggdemux28:sink state:D stack:0 pid:3637 ppid:2477 flags:0x00000002
> > [15884.106484] Call Trace:
> > [15884.106486] <TASK>
> > [15884.106488] __schedule+0x3ee/0x14c0
> > [15884.106494] schedule+0x5e/0xd0
> > [15884.106497] io_schedule+0x46/0x70
> > [15884.106500] folio_wait_bit_common+0x13d/0x350
> > [15884.106506] ? __pfx_wake_page_function+0x10/0x10
> > [15884.106513] filemap_get_pages+0x5fb/0x630
> > [15884.106518] ? psi_task_switch+0xd6/0x230
> > [15884.106522] ? __switch_to_asm+0x3e/0x70
> > [15884.106528] filemap_read+0xd9/0x350
> > [15884.106532] ? dput+0x3a/0x310
> > [15884.106539] vfs_read+0x201/0x350
> > [15884.106546] ksys_read+0x6f/0xf0
> > [15884.106551] do_syscall_64+0x60/0x90
> > [15884.106557] ? exit_to_user_mode_prepare+0x142/0x1f0
> > [15884.106561] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.106566] ? do_syscall_64+0x6c/0x90
> > [15884.106569] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.106573] ? do_syscall_64+0x6c/0x90
> > [15884.106576] ? do_syscall_64+0x6c/0x90
> > [15884.106579] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.106583] ? do_syscall_64+0x6c/0x90
> > [15884.106585] ? do_syscall_64+0x6c/0x90
> > [15884.106589] ? do_syscall_64+0x6c/0x90
> > [15884.106592] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.106598] RIP: 0033:0x7ff0e5f083ba
> > [15884.106626] RSP: 002b:00007ff0c77fd180 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.106630] RAX: ffffffffffffffda RBX: 00007ff0940c4eb0 RCX: 00007ff0e5f083ba
> > [15884.106633] RDX: 0000000000002278 RSI: 00007ff0a805c880 RDI: 0000000000000015
> > [15884.106635] RBP: 00007ff0c77fd1a0 R08: 0000000000000000 R09: 00007ff0e57886a0
> > [15884.106638] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000002278
> > [15884.106640] R13: 0000000000000000 R14: 00007ff0c77fe648 R15: 0000000000002278
> > [15884.106646] </TASK>
> > [15884.106865] task:kworker/u64:2 state:D stack:0 pid:11557 ppid:2 flags:0x00004000
> > [15884.106872] Workqueue: writeback wb_workfn (flush-253:20)
> > [15884.106878] Call Trace:
> > [15884.106880] <TASK>
> > [15884.106882] __schedule+0x3ee/0x14c0
> > [15884.106886] ? enqueue_entity+0x184/0x530
> > [15884.106891] ? default_send_IPI_single_phys+0x36/0x50
> > [15884.106898] schedule+0x5e/0xd0
> > [15884.106901] schedule_timeout+0x151/0x160
> > [15884.106907] wait_for_completion+0x8a/0x160
> > [15884.106912] md_bitmap_unplug_async+0x8c/0xb0
> > [15884.106917] ? __pfx_md_bitmap_unplug_fn+0x10/0x10
> > [15884.106922] flush_bio_list+0x35/0x100 [raid1]
> > [15884.106931] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.106941] raid1_make_request+0x82b/0x1700 [raid1]
> > [15884.106951] ? mempool_alloc+0x89/0x1b0
> > [15884.106956] md_handle_request+0x135/0x220
> > [15884.106962] raid_map+0x29/0x40 [dm_raid]
> > [15884.106972] __map_bio+0x44/0x1c0
> > [15884.106977] dm_submit_bio+0x261/0x620
> > [15884.106984] __submit_bio+0xb3/0x170
> > [15884.106990] submit_bio_noacct_nocheck+0x159/0x370
> > [15884.106995] ext4_io_submit+0x24/0x40
> > [15884.107001] ext4_do_writepages+0x3bd/0xc90
> > [15884.107008] ext4_writepages+0xad/0x180
> > [15884.107015] do_writepages+0xd2/0x1e0
> > [15884.107021] __writeback_single_inode+0x3d/0x360
> > [15884.107025] ? wbc_detach_inode+0x101/0x220
> > [15884.107029] writeback_sb_inodes+0x1ed/0x4b0
> > [15884.107035] __writeback_inodes_wb+0x4c/0xf0
> > [15884.107040] wb_writeback+0x298/0x310
> > [15884.107045] wb_workfn+0x35b/0x510
> > [15884.107049] ? check_preempt_curr+0x61/0x70
> > [15884.107052] ? ttwu_do_activate+0x64/0x220
> > [15884.107058] process_one_work+0x1e1/0x3f0
> > [15884.107063] worker_thread+0x51/0x390
> > [15884.107068] ? __pfx_worker_thread+0x10/0x10
> > [15884.107071] kthread+0xe8/0x120
> > [15884.107075] ? __pfx_kthread+0x10/0x10
> > [15884.107080] ret_from_fork+0x34/0x50
> > [15884.107084] ? __pfx_kthread+0x10/0x10
> > [15884.107088] ret_from_fork_asm+0x1b/0x30
> > [15884.107095] </TASK>
> > [15884.107123] task:kworker/u64:3 state:D stack:0 pid:13757 ppid:2 flags:0x00004000
> > [15884.107128] Workqueue: md_bitmap md_bitmap_unplug_fn
> > [15884.107132] Call Trace:
> > [15884.107134] <TASK>
> > [15884.107136] __schedule+0x3ee/0x14c0
> > [15884.107140] ? __submit_bio+0x8b/0x170
> > [15884.107144] ? submit_bio_noacct_nocheck+0x159/0x370
> > [15884.107150] schedule+0x5e/0xd0
> > [15884.107153] md_super_wait+0xa2/0xe0
> > [15884.107157] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.107161] md_bitmap_unplug+0xad/0x120
> > [15884.107165] md_bitmap_unplug_fn+0x16/0x20
> > [15884.107168] process_one_work+0x1e1/0x3f0
> > [15884.107172] worker_thread+0x51/0x390
> > [15884.107176] ? __pfx_worker_thread+0x10/0x10
> > [15884.107180] kthread+0xe8/0x120
> > [15884.107184] ? __pfx_kthread+0x10/0x10
> > [15884.107188] ret_from_fork+0x34/0x50
> > [15884.107192] ? __pfx_kthread+0x10/0x10
> > [15884.107196] ret_from_fork_asm+0x1b/0x30
> > [15884.107203] </TASK>
> > [15884.107287] task:ccache state:D stack:0 pid:29431 ppid:23240 flags:0x00000002
> > [15884.107292] Call Trace:
> > [15884.107294] <TASK>
> > [15884.107296] __schedule+0x3ee/0x14c0
> > [15884.107302] schedule+0x5e/0xd0
> > [15884.107305] io_schedule+0x46/0x70
> > [15884.107308] folio_wait_bit_common+0x13d/0x350
> > [15884.107313] ? __pfx_wake_page_function+0x10/0x10
> > [15884.107318] filemap_get_pages+0x5fb/0x630
> > [15884.107325] filemap_read+0xd9/0x350
> > [15884.107332] vfs_read+0x201/0x350
> > [15884.107338] ksys_read+0x6f/0xf0
> > [15884.107343] do_syscall_64+0x60/0x90
> > [15884.107347] ? exc_page_fault+0x7f/0x180
> > [15884.107351] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.107355] RIP: 0033:0x7fda92908381
> > [15884.107364] RSP: 002b:00007ffc1017e0a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.107367] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fda92908381
> > [15884.107370] RDX: 0000000000001000 RSI: 000055924b25f180 RDI: 0000000000000004
> > [15884.107373] RBP: 00007ffc101805d0 R08: 0000000000000000 R09: 0000000000000001
> > [15884.107375] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000001000
> > [15884.107377] R13: 00007ffc1017e5a0 R14: 00007ffc1017f5f0 R15: 00007ffc1017e6d0
> > [15884.107381] </TASK>
> > [15884.107384] task:ccache state:D stack:0 pid:29436 ppid:23240 flags:0x00000002
> > [15884.107387] Call Trace:
> > [15884.107389] <TASK>
> > [15884.107391] __schedule+0x3ee/0x14c0
> > [15884.107397] schedule+0x5e/0xd0
> > [15884.107400] io_schedule+0x46/0x70
> > [15884.107403] folio_wait_bit_common+0x13d/0x350
> > [15884.107407] ? __pfx_wake_page_function+0x10/0x10
> > [15884.107413] filemap_get_pages+0x5fb/0x630
> > [15884.107417] ? terminate_walk+0x61/0x100
> > [15884.107423] filemap_read+0xd9/0x350
> > [15884.107427] ? do_filp_open+0xb3/0x160
> > [15884.107434] vfs_read+0x201/0x350
> > [15884.107440] ksys_read+0x6f/0xf0
> > [15884.107445] do_syscall_64+0x60/0x90
> > [15884.107449] ? exc_page_fault+0x7f/0x180
> > [15884.107453] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.107458] RIP: 0033:0x7f534d908381
> > [15884.107464] RSP: 002b:00007ffc829af3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.107468] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f534d908381
> > [15884.107470] RDX: 0000000000001000 RSI: 000055f64fb75160 RDI: 0000000000000004
> > [15884.107472] RBP: 00007ffc829b1910 R08: 0000000000000000 R09: 0000000000000001
> > [15884.107474] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000001000
> > [15884.107476] R13: 00007ffc829af8e0 R14: 00007ffc829b0930 R15: 00007ffc829afa10
> > [15884.107481] </TASK>
> > [15884.107484] task:cc1 state:D stack:0 pid:29440 ppid:29439 flags:0x00000002
> > [15884.107488] Call Trace:
> > [15884.107490] <TASK>
> > [15884.107492] __schedule+0x3ee/0x14c0
> > [15884.107495] ? ext4_match+0x108/0x150
> > [15884.107501] schedule+0x5e/0xd0
> > [15884.107504] io_schedule+0x46/0x70
> > [15884.107507] folio_wait_bit_common+0x13d/0x350
> > [15884.107511] ? __pfx_wake_page_function+0x10/0x10
> > [15884.107517] filemap_get_pages+0x5fb/0x630
> > [15884.107521] ? get_page_from_freelist+0x1630/0x1770
> > [15884.107527] ? path_lookupat+0x96/0x1a0
> > [15884.107533] filemap_read+0xd9/0x350
> > [15884.107537] ? avc_has_perm+0x5f/0xe0
> > [15884.107544] vfs_read+0x201/0x350
> > [15884.107551] ksys_read+0x6f/0xf0
> > [15884.107556] do_syscall_64+0x60/0x90
> > [15884.107560] ? __count_memcg_events+0x42/0x90
> > [15884.107564] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.107570] ? handle_mm_fault+0x9e/0x350
> > [15884.107575] ? do_user_addr_fault+0x179/0x640
> > [15884.107581] ? exc_page_fault+0x7f/0x180
> > [15884.107585] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.107590] RIP: 0033:0x7f0616708381
> > [15884.107596] RSP: 002b:00007ffea22d25e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.107599] RAX: ffffffffffffffda RBX: 0000000004243050 RCX: 00007f0616708381
> > [15884.107602] RDX: 000000000001fdc8 RSI: 00000000042d89b0 RDI: 0000000000000006
> > [15884.107604] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.107606] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000004151ae0
> > [15884.107608] R13: 0000000000000000 R14: 00000000042d89b0 R15: 000000000001fdc8
> > [15884.107613] </TASK>
> > [15884.107622] task:cc1 state:D stack:0 pid:29443 ppid:29441 flags:0x00000002
> > [15884.107625] Call Trace:
> > [15884.107626] <TASK>
> > [15884.107629] __schedule+0x3ee/0x14c0
> > [15884.107634] schedule+0x5e/0xd0
> > [15884.107638] io_schedule+0x46/0x70
> > [15884.107641] folio_wait_bit_common+0x13d/0x350
> > [15884.107645] ? __pfx_wake_page_function+0x10/0x10
> > [15884.107651] filemap_get_pages+0x5fb/0x630
> > [15884.107658] filemap_read+0xd9/0x350
> > [15884.107661] ? memcg_check_events+0x77/0x1c0
> > [15884.107669] vfs_read+0x201/0x350
> > [15884.107676] ksys_read+0x6f/0xf0
> > [15884.107680] do_syscall_64+0x60/0x90
> > [15884.107684] ? do_user_addr_fault+0x179/0x640
> > [15884.107689] ? exc_page_fault+0x7f/0x180
> > [15884.107693] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.107697] RIP: 0033:0x7fe61fb08381
> > [15884.107704] RSP: 002b:00007fffb85c3588 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.107707] RAX: ffffffffffffffda RBX: 0000000003860770 RCX: 00007fe61fb08381
> > [15884.107709] RDX: 000000000001fdc8 RSI: 00000000038dfd60 RDI: 0000000000000006
> > [15884.107711] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.107713] R10: 00000000038dfd50 R11: 0000000000000246 R12: 000000000384bae0
> > [15884.107716] R13: 0000000000000000 R14: 00000000038dfd60 R15: 000000000001fdc8
> > [15884.107720] </TASK>
> > [15884.107726] task:cc1 state:D stack:0 pid:29450 ppid:29448 flags:0x00000002
> > [15884.107729] Call Trace:
> > [15884.107731] <TASK>
> > [15884.107732] __schedule+0x3ee/0x14c0
> > [15884.107738] schedule+0x5e/0xd0
> > [15884.107741] io_schedule+0x46/0x70
> > [15884.107744] folio_wait_bit_common+0x13d/0x350
> > [15884.107749] ? __pfx_wake_page_function+0x10/0x10
> > [15884.107755] filemap_get_pages+0x5fb/0x630
> > [15884.107759] ? get_page_from_freelist+0x1630/0x1770
> > [15884.107764] ? filename_lookup+0xe8/0x1f0
> > [15884.107770] filemap_read+0xd9/0x350
> > [15884.107777] vfs_read+0x201/0x350
> > [15884.107783] ksys_read+0x6f/0xf0
> > [15884.107788] do_syscall_64+0x60/0x90
> > [15884.107792] ? __count_memcg_events+0x42/0x90
> > [15884.107796] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.107801] ? handle_mm_fault+0x9e/0x350
> > [15884.107805] ? do_user_addr_fault+0x179/0x640
> > [15884.107810] ? exc_page_fault+0x7f/0x180
> > [15884.107814] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.107819] RIP: 0033:0x7fc938908381
> > [15884.107831] RSP: 002b:00007ffee7467d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.107834] RAX: ffffffffffffffda RBX: 00000000031e7ff0 RCX: 00007fc938908381
> > [15884.107837] RDX: 0000000000001b8f RSI: 00000000032659c0 RDI: 0000000000000006
> > [15884.107839] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.107841] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000031d3ae0
> > [15884.107842] R13: 0000000000000000 R14: 00000000032659c0 R15: 0000000000001b8f
> > [15884.107847] </TASK>
> > [15884.107849] task:cc1 state:D stack:0 pid:29451 ppid:29449 flags:0x00000002
> > [15884.107853] Call Trace:
> > [15884.107854] <TASK>
> > [15884.107856] __schedule+0x3ee/0x14c0
> > [15884.107862] schedule+0x5e/0xd0
> > [15884.107865] io_schedule+0x46/0x70
> > [15884.107868] folio_wait_bit_common+0x13d/0x350
> > [15884.107872] ? __pfx_wake_page_function+0x10/0x10
> > [15884.107878] filemap_get_pages+0x5fb/0x630
> > [15884.107882] ? terminate_walk+0x61/0x100
> > [15884.107888] filemap_read+0xd9/0x350
> > [15884.107892] ? __alloc_pages+0xe0/0x350
> > [15884.107898] vfs_read+0x201/0x350
> > [15884.107904] ksys_read+0x6f/0xf0
> > [15884.107909] do_syscall_64+0x60/0x90
> > [15884.107912] ? __count_memcg_events+0x42/0x90
> > [15884.107916] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.107921] ? handle_mm_fault+0x9e/0x350
> > [15884.107925] ? do_user_addr_fault+0x179/0x640
> > [15884.107930] ? exc_page_fault+0x7f/0x180
> > [15884.107934] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.107939] RIP: 0033:0x7f8284f08381
> > [15884.107945] RSP: 002b:00007ffcb2d353d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.107949] RAX: ffffffffffffffda RBX: 000000000313b770 RCX: 00007f8284f08381
> > [15884.107951] RDX: 000000000001fdc8 RSI: 00000000031b5d40 RDI: 0000000000000006
> > [15884.107953] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.107955] R10: 00000000031b5d30 R11: 0000000000000246 R12: 0000000003126ae0
> > [15884.107957] R13: 0000000000000000 R14: 00000000031b5d40 R15: 000000000001fdc8
> > [15884.107962] </TASK>
> > [15884.107964] task:ar state:D stack:0 pid:29480 ppid:29475 flags:0x00004002
> > [15884.107968] Call Trace:
> > [15884.107970] <TASK>
> > [15884.107972] __schedule+0x3ee/0x14c0
> > [15884.107976] ? md_handle_request+0x19a/0x220
> > [15884.107981] schedule+0x5e/0xd0
> > [15884.107984] md_super_wait+0xa2/0xe0
> > [15884.107988] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.107992] md_bitmap_unplug+0xd2/0x120
> > [15884.107996] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.108006] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.108015] __blk_flush_plug+0xd7/0x150
> > [15884.108020] blk_finish_plug+0x29/0x40
> > [15884.108024] ext4_do_writepages+0x401/0xc90
> > [15884.108031] ext4_writepages+0xad/0x180
> > [15884.108037] do_writepages+0xd2/0x1e0
> > [15884.108041] ? vfs_read+0x201/0x350
> > [15884.108046] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.108052] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.108057] ext4_release_file+0x74/0xb0
> > [15884.108062] __fput+0xf5/0x2a0
> > [15884.108066] task_work_run+0x5d/0x90
> > [15884.108072] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.108076] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.108080] do_syscall_64+0x6c/0x90
> > [15884.108083] ? do_syscall_64+0x6c/0x90
> > [15884.108086] ? do_syscall_64+0x6c/0x90
> > [15884.108090] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108094] RIP: 0033:0x7fc5c81037b4
> > [15884.108101] RSP: 002b:00007ffc93a5d078 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.108104] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc5c81037b4
> > [15884.108106] RDX: 0000000000002000 RSI: 00007ffc93a5d090 RDI: 0000000000000003
> > [15884.108108] RBP: 00007ffc93a5f0d0 R08: 000055debdb6a780 R09: 0000000000000001
> > [15884.108111] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fc5c82efb08
> > [15884.108113] R13: 0000000000000022 R14: 0000000000000003 R15: 0000000000000000
> > [15884.108117] </TASK>
> > [15884.108121] task:cc1 state:D stack:0 pid:29488 ppid:29487 flags:0x00000002
> > [15884.108125] Call Trace:
> > [15884.108126] <TASK>
> > [15884.108128] __schedule+0x3ee/0x14c0
> > [15884.108132] ? __alloc_pages+0x1a3/0x350
> > [15884.108137] schedule+0x5e/0xd0
> > [15884.108140] io_schedule+0x46/0x70
> > [15884.108143] folio_wait_bit_common+0x13d/0x350
> > [15884.108147] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108153] filemap_get_pages+0x5fb/0x630
> > [15884.108160] filemap_read+0xd9/0x350
> > [15884.108164] ? __alloc_pages+0xe0/0x350
> > [15884.108169] vfs_read+0x201/0x350
> > [15884.108176] ksys_read+0x6f/0xf0
> > [15884.108181] do_syscall_64+0x60/0x90
> > [15884.108184] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.108189] ? handle_mm_fault+0x9e/0x350
> > [15884.108193] ? do_user_addr_fault+0x179/0x640
> > [15884.108198] ? exc_page_fault+0x7f/0x180
> > [15884.108202] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108207] RIP: 0033:0x7f8cf3308381
> > [15884.108213] RSP: 002b:00007ffcd7e94738 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108216] RAX: ffffffffffffffda RBX: 00000000025af240 RCX: 00007f8cf3308381
> > [15884.108219] RDX: 000000000001fdc8 RSI: 0000000002690910 RDI: 0000000000000006
> > [15884.108221] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108222] R10: 0000000002690900 R11: 0000000000000246 R12: 00000000024f4ae0
> > [15884.108224] R13: 0000000000000000 R14: 0000000002690910 R15: 000000000001fdc8
> > [15884.108229] </TASK>
> > [15884.108234] task:cc1 state:D stack:0 pid:29493 ppid:29492 flags:0x00000002
> > [15884.108237] Call Trace:
> > [15884.108239] <TASK>
> > [15884.108241] __schedule+0x3ee/0x14c0
> > [15884.108246] schedule+0x5e/0xd0
> > [15884.108249] io_schedule+0x46/0x70
> > [15884.108252] folio_wait_bit_common+0x13d/0x350
> > [15884.108257] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108262] filemap_get_pages+0x5fb/0x630
> > [15884.108267] ? path_init+0x38f/0x3c0
> > [15884.108272] filemap_read+0xd9/0x350
> > [15884.108276] ? __alloc_pages+0xe0/0x350
> > [15884.108282] vfs_read+0x201/0x350
> > [15884.108289] ksys_read+0x6f/0xf0
> > [15884.108293] do_syscall_64+0x60/0x90
> > [15884.108297] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.108302] ? handle_mm_fault+0x9e/0x350
> > [15884.108306] ? do_user_addr_fault+0x179/0x640
> > [15884.108311] ? exc_page_fault+0x7f/0x180
> > [15884.108315] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108320] RIP: 0033:0x7f12a9908381
> > [15884.108326] RSP: 002b:00007ffcc9100bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108330] RAX: ffffffffffffffda RBX: 0000000003831de0 RCX: 00007f12a9908381
> > [15884.108332] RDX: 000000000001fdc8 RSI: 00000000038caf60 RDI: 0000000000000006
> > [15884.108334] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108336] R10: 00000000038caf50 R11: 0000000000000246 R12: 0000000003722ae0
> > [15884.108338] R13: 0000000000000000 R14: 00000000038caf60 R15: 000000000001fdc8
> > [15884.108342] </TASK>
> > [15884.108345] task:cc1 state:D stack:0 pid:29495 ppid:29494 flags:0x00000002
> > [15884.108349] Call Trace:
> > [15884.108350] <TASK>
> > [15884.108352] __schedule+0x3ee/0x14c0
> > [15884.108356] ? __rmqueue_pcplist+0xda/0xb80
> > [15884.108361] ? avc_has_perm_noaudit+0x6b/0xf0
> > [15884.108366] schedule+0x5e/0xd0
> > [15884.108369] io_schedule+0x46/0x70
> > [15884.108373] folio_wait_bit_common+0x13d/0x350
> > [15884.108377] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108383] filemap_get_pages+0x5fb/0x630
> > [15884.108388] ? __alloc_pages+0xe0/0x350
> > [15884.108391] filemap_read+0xd9/0x350
> > [15884.108395] ? __mod_memcg_lruvec_state+0x4e/0xa0
> > [15884.108399] ? __mod_lruvec_page_state+0x99/0x140
> > [15884.108405] vfs_read+0x201/0x350
> > [15884.108411] ksys_read+0x6f/0xf0
> > [15884.108416] do_syscall_64+0x60/0x90
> > [15884.108420] ? exc_page_fault+0x7f/0x180
> > [15884.108424] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108429] RIP: 0033:0x7f61bdb08381
> > [15884.108435] RSP: 002b:00007ffd12a64ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108438] RAX: ffffffffffffffda RBX: 0000000003c67e10 RCX: 00007f61bdb08381
> > [15884.108440] RDX: 000000000001fdc8 RSI: 0000000003d43be0 RDI: 0000000000000006
> > [15884.108442] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108444] R10: 0000000003d43bd0 R11: 0000000000000246 R12: 0000000003ba3ae0
> > [15884.108446] R13: 0000000000000000 R14: 0000000003d43be0 R15: 000000000001fdc8
> > [15884.108451] </TASK>
> > [15884.108453] task:ccache state:D stack:0 pid:29496 ppid:23240 flags:0x00000002
> > [15884.108457] Call Trace:
> > [15884.108458] <TASK>
> > [15884.108460] __schedule+0x3ee/0x14c0
> > [15884.108466] schedule+0x5e/0xd0
> > [15884.108469] io_schedule+0x46/0x70
> > [15884.108472] folio_wait_bit_common+0x13d/0x350
> > [15884.108476] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108482] filemap_get_pages+0x5fb/0x630
> > [15884.108488] filemap_read+0xd9/0x350
> > [15884.108495] vfs_read+0x201/0x350
> > [15884.108502] ksys_read+0x6f/0xf0
> > [15884.108506] do_syscall_64+0x60/0x90
> > [15884.108510] ? kmem_cache_free+0x22/0x3a0
> > [15884.108514] ? do_sys_openat2+0x97/0xe0
> > [15884.108518] ? alloc_fd+0xb5/0x170
> > [15884.108523] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.108527] ? do_syscall_64+0x6c/0x90
> > [15884.108530] ? exc_page_fault+0x7f/0x180
> > [15884.108534] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108538] RIP: 0033:0x7f09eef08381
> > [15884.108545] RSP: 002b:00007ffcfb6b5148 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108548] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f09eef08381
> > [15884.108550] RDX: 0000000000001000 RSI: 000055d7c7de6180 RDI: 0000000000000004
> > [15884.108552] RBP: 00007ffcfb6b7670 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108554] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000001000
> > [15884.108556] R13: 00007ffcfb6b5640 R14: 00007ffcfb6b6690 R15: 00007ffcfb6b5770
> > [15884.108561] </TASK>
> > [15884.108563] task:ccache state:D stack:0 pid:29499 ppid:23240 flags:0x00000002
> > [15884.108567] Call Trace:
> > [15884.108568] <TASK>
> > [15884.108570] __schedule+0x3ee/0x14c0
> > [15884.108576] schedule+0x5e/0xd0
> > [15884.108579] io_schedule+0x46/0x70
> > [15884.108582] folio_wait_bit_common+0x13d/0x350
> > [15884.108587] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108592] filemap_get_pages+0x5fb/0x630
> > [15884.108597] ? terminate_walk+0x61/0x100
> > [15884.108602] filemap_read+0xd9/0x350
> > [15884.108609] vfs_read+0x201/0x350
> > [15884.108616] ksys_read+0x6f/0xf0
> > [15884.108621] do_syscall_64+0x60/0x90
> > [15884.108624] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.108628] ? do_syscall_64+0x6c/0x90
> > [15884.108631] ? exc_page_fault+0x7f/0x180
> > [15884.108635] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108639] RIP: 0033:0x7fd2bb308381
> > [15884.108645] RSP: 002b:00007ffddec9b6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108649] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd2bb308381
> > [15884.108651] RDX: 0000000000001000 RSI: 000055baf27ca180 RDI: 0000000000000004
> > [15884.108653] RBP: 00007ffddec9dc20 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108655] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000001000
> > [15884.108657] R13: 00007ffddec9bbf0 R14: 00007ffddec9cc40 R15: 00007ffddec9bd20
> > [15884.108662] </TASK>
> > [15884.108665] task:cc1 state:D stack:0 pid:29502 ppid:29501 flags:0x00000002
> > [15884.108669] Call Trace:
> > [15884.108671] <TASK>
> > [15884.108673] __schedule+0x3ee/0x14c0
> > [15884.108676] ? __rmqueue_pcplist+0xda/0xb80
> > [15884.108683] schedule+0x5e/0xd0
> > [15884.108686] io_schedule+0x46/0x70
> > [15884.108689] folio_wait_bit_common+0x13d/0x350
> > [15884.108693] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108699] filemap_get_pages+0x5fb/0x630
> > [15884.108704] ? __alloc_pages+0xe0/0x350
> > [15884.108708] filemap_read+0xd9/0x350
> > [15884.108712] ? folio_add_new_anon_rmap+0x48/0xe0
> > [15884.108719] vfs_read+0x201/0x350
> > [15884.108726] ksys_read+0x6f/0xf0
> > [15884.108731] do_syscall_64+0x60/0x90
> > [15884.108734] ? exc_page_fault+0x7f/0x180
> > [15884.108737] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108742] RIP: 0033:0x7ff2fbd08381
> > [15884.108748] RSP: 002b:00007ffc28475c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108751] RAX: ffffffffffffffda RBX: 0000000003452770 RCX: 00007ff2fbd08381
> > [15884.108754] RDX: 000000000001fdc8 RSI: 00000000034d5410 RDI: 0000000000000006
> > [15884.108755] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108757] R10: 00000000034d5400 R11: 0000000000000246 R12: 000000000343dae0
> > [15884.108759] R13: 0000000000000000 R14: 00000000034d5410 R15: 000000000001fdc8
> > [15884.108764] </TASK>
> > [15884.108768] task:cc1 state:D stack:0 pid:29510 ppid:29509 flags:0x00000002
> > [15884.108771] Call Trace:
> > [15884.108773] <TASK>
> > [15884.108775] __schedule+0x3ee/0x14c0
> > [15884.108781] schedule+0x5e/0xd0
> > [15884.108784] io_schedule+0x46/0x70
> > [15884.108787] folio_wait_bit_common+0x13d/0x350
> > [15884.108791] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108797] filemap_get_pages+0x5fb/0x630
> > [15884.108802] ? generic_fillattr+0x49/0x100
> > [15884.108805] ? _copy_to_user+0x24/0x40
> > [15884.108811] filemap_read+0xd9/0x350
> > [15884.108818] vfs_read+0x201/0x350
> > [15884.108831] ksys_read+0x6f/0xf0
> > [15884.108836] do_syscall_64+0x60/0x90
> > [15884.108839] ? exc_page_fault+0x7f/0x180
> > [15884.108843] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108848] RIP: 0033:0x7f67cb108381
> > [15884.108854] RSP: 002b:00007ffc29bc22b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108858] RAX: ffffffffffffffda RBX: 0000000003b58210 RCX: 00007f67cb108381
> > [15884.108860] RDX: 000000000001fdc8 RSI: 0000000003c1f070 RDI: 0000000000000006
> > [15884.108862] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108864] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000003ab0ae0
> > [15884.108866] R13: 0000000000000000 R14: 0000000003c1f070 R15: 000000000001fdc8
> > [15884.108870] </TASK>
> > [15884.108874] task:cc1 state:D stack:0 pid:29513 ppid:29512 flags:0x00000002
> > [15884.108878] Call Trace:
> > [15884.108879] <TASK>
> > [15884.108881] __schedule+0x3ee/0x14c0
> > [15884.108887] schedule+0x5e/0xd0
> > [15884.108890] io_schedule+0x46/0x70
> > [15884.108894] folio_wait_bit_common+0x13d/0x350
> > [15884.108898] ? __pfx_wake_page_function+0x10/0x10
> > [15884.108904] filemap_get_pages+0x5fb/0x630
> > [15884.108909] ? avc_has_perm+0x5f/0xe0
> > [15884.108914] filemap_read+0xd9/0x350
> > [15884.108918] ? _copy_to_user+0x24/0x40
> > [15884.108922] ? cp_new_stat+0x135/0x170
> > [15884.108928] vfs_read+0x201/0x350
> > [15884.108934] ksys_read+0x6f/0xf0
> > [15884.108939] do_syscall_64+0x60/0x90
> > [15884.108942] ? do_user_addr_fault+0x179/0x640
> > [15884.108947] ? exc_page_fault+0x7f/0x180
> > [15884.108951] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.108956] RIP: 0033:0x7f0509508381
> > [15884.108962] RSP: 002b:00007ffd8d920fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.108965] RAX: ffffffffffffffda RBX: 0000000003f59b10 RCX: 00007f0509508381
> > [15884.108968] RDX: 000000000001fdc8 RSI: 0000000004020970 RDI: 0000000000000006
> > [15884.108970] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.108971] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000003eb1ae0
> > [15884.108974] R13: 0000000000000000 R14: 0000000004020970 R15: 000000000001fdc8
> > [15884.108978] </TASK>
> > [15884.108981] task:ar state:D stack:0 pid:29516 ppid:29514 flags:0x00004002
> > [15884.108985] Call Trace:
> > [15884.108987] <TASK>
> > [15884.108989] __schedule+0x3ee/0x14c0
> > [15884.108993] ? md_handle_request+0x19a/0x220
> > [15884.108998] schedule+0x5e/0xd0
> > [15884.109001] md_super_wait+0xa2/0xe0
> > [15884.109005] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.109009] md_bitmap_unplug+0xd2/0x120
> > [15884.109013] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.109022] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.109031] __blk_flush_plug+0xd7/0x150
> > [15884.109036] blk_finish_plug+0x29/0x40
> > [15884.109040] ext4_do_writepages+0x401/0xc90
> > [15884.109047] ext4_writepages+0xad/0x180
> > [15884.109053] do_writepages+0xd2/0x1e0
> > [15884.109059] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.109064] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.109069] ext4_release_file+0x74/0xb0
> > [15884.109073] __fput+0xf5/0x2a0
> > [15884.109077] task_work_run+0x5d/0x90
> > [15884.109082] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.109085] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109089] do_syscall_64+0x6c/0x90
> > [15884.109093] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109097] ? do_syscall_64+0x6c/0x90
> > [15884.109100] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.109105] RIP: 0033:0x7f43c9d037b4
> > [15884.109111] RSP: 002b:00007ffd4ead7c88 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.109114] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f43c9d037b4
> > [15884.109116] RDX: 0000000000002000 RSI: 00007ffd4ead7ca0 RDI: 0000000000000003
> > [15884.109119] RBP: 00007ffd4ead9ce0 R08: 00005600127ef780 R09: 0000000000000001
> > [15884.109121] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f43c9f5bb08
> > [15884.109123] R13: 0000000000000009 R14: 0000000000000003 R15: 0000000000000000
> > [15884.109127] </TASK>
> > [15884.109131] task:cc1 state:D stack:0 pid:29519 ppid:29518 flags:0x00000002
> > [15884.109135] Call Trace:
> > [15884.109136] <TASK>
> > [15884.109138] __schedule+0x3ee/0x14c0
> > [15884.109141] ? __rmqueue_pcplist+0xda/0xb80
> > [15884.109148] schedule+0x5e/0xd0
> > [15884.109151] io_schedule+0x46/0x70
> > [15884.109154] folio_wait_bit_common+0x13d/0x350
> > [15884.109159] ? __pfx_wake_page_function+0x10/0x10
> > [15884.109164] filemap_get_pages+0x5fb/0x630
> > [15884.109169] ? __alloc_pages+0xe0/0x350
> > [15884.109173] filemap_read+0xd9/0x350
> > [15884.109180] vfs_read+0x201/0x350
> > [15884.109186] ksys_read+0x6f/0xf0
> > [15884.109191] do_syscall_64+0x60/0x90
> > [15884.109195] ? exc_page_fault+0x7f/0x180
> > [15884.109199] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.109203] RIP: 0033:0x7fa065d08381
> > [15884.109209] RSP: 002b:00007ffd4feb9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.109212] RAX: ffffffffffffffda RBX: 00000000038045e0 RCX: 00007fa065d08381
> > [15884.109215] RDX: 000000000001fdc8 RSI: 0000000003893310 RDI: 0000000000000006
> > [15884.109217] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.109219] R10: 0000000003893300 R11: 0000000000000246 R12: 00000000037f2ae0
> > [15884.109221] R13: 0000000000000000 R14: 0000000003893310 R15: 000000000001fdc8
> > [15884.109226] </TASK>
> > [15884.109229] task:cc1 state:D stack:0 pid:29524 ppid:29523 flags:0x00000002
> > [15884.109233] Call Trace:
> > [15884.109234] <TASK>
> > [15884.109236] __schedule+0x3ee/0x14c0
> > [15884.109241] ? __alloc_pages+0x1a3/0x350
> > [15884.109245] schedule+0x5e/0xd0
> > [15884.109248] io_schedule+0x46/0x70
> > [15884.109251] folio_wait_bit_common+0x13d/0x350
> > [15884.109256] ? __pfx_wake_page_function+0x10/0x10
> > [15884.109261] filemap_get_pages+0x5fb/0x630
> > [15884.109268] filemap_read+0xd9/0x350
> > [15884.109275] vfs_read+0x201/0x350
> > [15884.109281] ksys_read+0x6f/0xf0
> > [15884.109286] do_syscall_64+0x60/0x90
> > [15884.109289] ? handle_mm_fault+0x9e/0x350
> > [15884.109294] ? do_user_addr_fault+0x179/0x640
> > [15884.109299] ? exc_page_fault+0x7f/0x180
> > [15884.109303] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.109307] RIP: 0033:0x7f20f8f08381
> > [15884.109313] RSP: 002b:00007ffd98dcab58 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.109317] RAX: ffffffffffffffda RBX: 00000000042c7950 RCX: 00007f20f8f08381
> > [15884.109319] RDX: 000000000001fdc8 RSI: 000000000433a250 RDI: 0000000000000006
> > [15884.109321] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.109323] R10: 000000000433a240 R11: 0000000000000246 R12: 000000000419cae0
> > [15884.109325] R13: 0000000000000000 R14: 000000000433a250 R15: 000000000001fdc8
> > [15884.109330] </TASK>
> > [15884.109333] task:cc1 state:D stack:0 pid:29531 ppid:29530 flags:0x00000002
> > [15884.109337] Call Trace:
> > [15884.109339] <TASK>
> > [15884.109341] __schedule+0x3ee/0x14c0
> > [15884.109346] schedule+0x5e/0xd0
> > [15884.109349] io_schedule+0x46/0x70
> > [15884.109352] folio_wait_bit_common+0x13d/0x350
> > [15884.109357] ? __pfx_wake_page_function+0x10/0x10
> > [15884.109362] filemap_get_pages+0x5fb/0x630
> > [15884.109367] ? __alloc_pages+0xe0/0x350
> > [15884.109371] filemap_read+0xd9/0x350
> > [15884.109375] ? folio_add_new_anon_rmap+0x48/0xe0
> > [15884.109382] vfs_read+0x201/0x350
> > [15884.109388] ksys_read+0x6f/0xf0
> > [15884.109393] do_syscall_64+0x60/0x90
> > [15884.109397] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.109402] RIP: 0033:0x7ffa93308381
> > [15884.109408] RSP: 002b:00007ffcff8dcba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.109411] RAX: ffffffffffffffda RBX: 000000000262c5e0 RCX: 00007ffa93308381
> > [15884.109413] RDX: 000000000001fdc8 RSI: 00000000026b5560 RDI: 0000000000000006
> > [15884.109415] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.109417] R10: 00000000026b5550 R11: 0000000000000246 R12: 000000000261aae0
> > [15884.109420] R13: 0000000000000000 R14: 00000000026b5560 R15: 000000000001fdc8
> > [15884.109424] </TASK>
> > [15884.109427] task:ar state:D stack:0 pid:29534 ppid:29532 flags:0x00004002
> > [15884.109431] Call Trace:
> > [15884.109432] <TASK>
> > [15884.109434] __schedule+0x3ee/0x14c0
> > [15884.109439] ? md_handle_request+0x19a/0x220
> > [15884.109444] schedule+0x5e/0xd0
> > [15884.109447] md_super_wait+0xa2/0xe0
> > [15884.109451] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.109455] md_bitmap_unplug+0xd2/0x120
> > [15884.109459] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.109468] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.109476] __blk_flush_plug+0xd7/0x150
> > [15884.109482] blk_finish_plug+0x29/0x40
> > [15884.109486] ext4_do_writepages+0x401/0xc90
> > [15884.109493] ext4_writepages+0xad/0x180
> > [15884.109499] do_writepages+0xd2/0x1e0
> > [15884.109503] ? xa_load+0x8c/0xe0
> > [15884.109507] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.109513] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.109518] ext4_release_file+0x74/0xb0
> > [15884.109522] __fput+0xf5/0x2a0
> > [15884.109525] task_work_run+0x5d/0x90
> > [15884.109530] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.109534] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109538] do_syscall_64+0x6c/0x90
> > [15884.109542] ? ksys_write+0x6f/0xf0
> > [15884.109547] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109550] ? do_syscall_64+0x6c/0x90
> > [15884.109554] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109557] ? do_syscall_64+0x6c/0x90
> > [15884.109560] ? do_syscall_64+0x6c/0x90
> > [15884.109563] ? do_syscall_64+0x6c/0x90
> > [15884.109566] ? do_syscall_64+0x6c/0x90
> > [15884.109569] ? do_syscall_64+0x6c/0x90
> > [15884.109572] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.109577] RIP: 0033:0x7fa6f1f037b4
> > [15884.109583] RSP: 002b:00007ffe1f4178f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.109586] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa6f1f037b4
> > [15884.109588] RDX: 0000000000002000 RSI: 00007ffe1f417910 RDI: 0000000000000003
> > [15884.109590] RBP: 00007ffe1f419950 R08: 000055aac07c1780 R09: 0000000000000001
> > [15884.109593] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fa6f21c6b08
> > [15884.109594] R13: 000000000000000d R14: 0000000000000003 R15: 0000000000000000
> > [15884.109599] </TASK>
> > [15884.109602] task:ar state:D stack:0 pid:29538 ppid:29536 flags:0x00004002
> > [15884.109606] Call Trace:
> > [15884.109607] <TASK>
> > [15884.109609] __schedule+0x3ee/0x14c0
> > [15884.109613] ? md_handle_request+0x19a/0x220
> > [15884.109618] schedule+0x5e/0xd0
> > [15884.109621] md_super_wait+0xa2/0xe0
> > [15884.109625] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.109629] md_bitmap_unplug+0xd2/0x120
> > [15884.109633] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.109642] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.109651] __blk_flush_plug+0xd7/0x150
> > [15884.109656] blk_finish_plug+0x29/0x40
> > [15884.109660] ext4_do_writepages+0x401/0xc90
> > [15884.109667] ext4_writepages+0xad/0x180
> > [15884.109673] do_writepages+0xd2/0x1e0
> > [15884.109678] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.109683] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.109688] ext4_release_file+0x74/0xb0
> > [15884.109692] __fput+0xf5/0x2a0
> > [15884.109696] task_work_run+0x5d/0x90
> > [15884.109701] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.109704] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109708] do_syscall_64+0x6c/0x90
> > [15884.109712] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109716] ? do_syscall_64+0x6c/0x90
> > [15884.109719] ? do_syscall_64+0x6c/0x90
> > [15884.109721] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109725] ? do_syscall_64+0x6c/0x90
> > [15884.109728] ? do_syscall_64+0x6c/0x90
> > [15884.109731] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.109736] RIP: 0033:0x7f41c05037b4
> > [15884.109742] RSP: 002b:00007ffc37ebd7f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.109746] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f41c05037b4
> > [15884.109748] RDX: 0000000000002000 RSI: 00007ffc37ebd810 RDI: 0000000000000003
> > [15884.109750] RBP: 00007ffc37ebf850 R08: 00005620ae82e780 R09: 0000000000000001
> > [15884.109752] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f41c077ab08
> > [15884.109754] R13: 000000000000000d R14: 0000000000000003 R15: 0000000000000000
> > [15884.109758] </TASK>
> > [15884.109761] task:ar state:D stack:0 pid:29543 ppid:29541 flags:0x00004002
> > [15884.109765] Call Trace:
> > [15884.109766] <TASK>
> > [15884.109768] __schedule+0x3ee/0x14c0
> > [15884.109772] ? md_handle_request+0x19a/0x220
> > [15884.109777] schedule+0x5e/0xd0
> > [15884.109781] md_super_wait+0xa2/0xe0
> > [15884.109784] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.109789] md_bitmap_unplug+0xd2/0x120
> > [15884.109792] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.109801] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.109810] __blk_flush_plug+0xd7/0x150
> > [15884.109816] blk_finish_plug+0x29/0x40
> > [15884.109820] ext4_do_writepages+0x401/0xc90
> > [15884.109831] ext4_writepages+0xad/0x180
> > [15884.109837] do_writepages+0xd2/0x1e0
> > [15884.109842] ? touch_atime+0x48/0x1b0
> > [15884.109846] ? xa_load+0x8c/0xe0
> > [15884.109850] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.109855] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.109860] ext4_release_file+0x74/0xb0
> > [15884.109864] __fput+0xf5/0x2a0
> > [15884.109868] task_work_run+0x5d/0x90
> > [15884.109873] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.109876] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109880] do_syscall_64+0x6c/0x90
> > [15884.109885] ? ksys_read+0x6f/0xf0
> > [15884.109889] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.109893] ? do_syscall_64+0x6c/0x90
> > [15884.109897] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.109901] RIP: 0033:0x7fbc449037b4
> > [15884.109908] RSP: 002b:00007fffc47456c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.109912] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fbc449037b4
> > [15884.109914] RDX: 0000000000002000 RSI: 00007fffc47456e0 RDI: 0000000000000003
> > [15884.109916] RBP: 00007fffc4747720 R08: 000055a64012a780 R09: 0000000000000001
> > [15884.109918] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fbc44ac8b08
> > [15884.109920] R13: 000000000000000c R14: 0000000000000003 R15: 0000000000000000
> > [15884.109924] </TASK>
> > [15884.109928] task:cc1 state:D stack:0 pid:29546 ppid:29545 flags:0x00000002
> > [15884.109932] Call Trace:
> > [15884.109933] <TASK>
> > [15884.109935] __schedule+0x3ee/0x14c0
> > [15884.109941] schedule+0x5e/0xd0
> > [15884.109944] io_schedule+0x46/0x70
> > [15884.109947] folio_wait_bit_common+0x13d/0x350
> > [15884.109952] ? __pfx_wake_page_function+0x10/0x10
> > [15884.109957] filemap_get_pages+0x5fb/0x630
> > [15884.109962] ? get_page_from_freelist+0x1630/0x1770
> > [15884.109969] filemap_read+0xd9/0x350
> > [15884.109975] vfs_read+0x201/0x350
> > [15884.109982] ksys_read+0x6f/0xf0
> > [15884.109987] do_syscall_64+0x60/0x90
> > [15884.109991] ? __count_memcg_events+0x42/0x90
> > [15884.109995] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.110000] ? handle_mm_fault+0x9e/0x350
> > [15884.110004] ? do_user_addr_fault+0x179/0x640
> > [15884.110009] ? exc_page_fault+0x7f/0x180
> > [15884.110013] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110018] RIP: 0033:0x7fe2bf508381
> > [15884.110024] RSP: 002b:00007ffe4b99d9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.110027] RAX: ffffffffffffffda RBX: 0000000003da05e0 RCX: 00007fe2bf508381
> > [15884.110030] RDX: 000000000001fdc8 RSI: 0000000003e39760 RDI: 0000000000000006
> > [15884.110032] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.110034] R10: 0000000003e39750 R11: 0000000000000246 R12: 0000000003ca0ae0
> > [15884.110036] R13: 0000000000000000 R14: 0000000003e39760 R15: 000000000001fdc8
> > [15884.110040] </TASK>
> > [15884.110044] task:cc1 state:D stack:0 pid:29549 ppid:29548 flags:0x00000002
> > [15884.110048] Call Trace:
> > [15884.110050] <TASK>
> > [15884.110051] __schedule+0x3ee/0x14c0
> > [15884.110057] schedule+0x5e/0xd0
> > [15884.110060] io_schedule+0x46/0x70
> > [15884.110064] folio_wait_bit_common+0x13d/0x350
> > [15884.110068] ? __pfx_wake_page_function+0x10/0x10
> > [15884.110074] filemap_get_pages+0x5fb/0x630
> > [15884.110080] filemap_read+0xd9/0x350
> > [15884.110087] vfs_read+0x201/0x350
> > [15884.110094] ksys_read+0x6f/0xf0
> > [15884.110099] do_syscall_64+0x60/0x90
> > [15884.110102] ? do_user_addr_fault+0x179/0x640
> > [15884.110108] ? exc_page_fault+0x7f/0x180
> > [15884.110111] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110116] RIP: 0033:0x7f9bac908381
> > [15884.110122] RSP: 002b:00007fff56f186e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.110125] RAX: ffffffffffffffda RBX: 0000000003c4b770 RCX: 00007f9bac908381
> > [15884.110128] RDX: 000000000001fdc8 RSI: 0000000003cc30d0 RDI: 0000000000000006
> > [15884.110130] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.110132] R10: 0000000003cc30c0 R11: 0000000000000246 R12: 0000000003c36ae0
> > [15884.110134] R13: 0000000000000000 R14: 0000000003cc30d0 R15: 000000000001fdc8
> > [15884.110138] </TASK>
> > [15884.110142] task:cc1 state:D stack:0 pid:29555 ppid:29554 flags:0x00000002
> > [15884.110145] Call Trace:
> > [15884.110147] <TASK>
> > [15884.110149] __schedule+0x3ee/0x14c0
> > [15884.110154] schedule+0x5e/0xd0
> > [15884.110157] io_schedule+0x46/0x70
> > [15884.110160] folio_wait_bit_common+0x13d/0x350
> > [15884.110165] ? __pfx_wake_page_function+0x10/0x10
> > [15884.110170] filemap_get_pages+0x5fb/0x630
> > [15884.110176] ? path_init+0x38f/0x3c0
> > [15884.110181] filemap_read+0xd9/0x350
> > [15884.110187] vfs_read+0x201/0x350
> > [15884.110194] ksys_read+0x6f/0xf0
> > [15884.110199] do_syscall_64+0x60/0x90
> > [15884.110202] ? __count_memcg_events+0x42/0x90
> > [15884.110206] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.110211] ? handle_mm_fault+0x9e/0x350
> > [15884.110215] ? do_user_addr_fault+0x179/0x640
> > [15884.110220] ? exc_page_fault+0x7f/0x180
> > [15884.110224] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110229] RIP: 0033:0x7faab7708381
> > [15884.110235] RSP: 002b:00007ffd6e3df0b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.110238] RAX: ffffffffffffffda RBX: 0000000003648a50 RCX: 00007faab7708381
> > [15884.110240] RDX: 000000000001fdc8 RSI: 00000000036bb350 RDI: 0000000000000006
> > [15884.110242] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.110244] R10: 00000000036bb340 R11: 0000000000000246 R12: 000000000351cae0
> > [15884.110246] R13: 0000000000000000 R14: 00000000036bb350 R15: 000000000001fdc8
> > [15884.110251] </TASK>
> > [15884.110255] task:cc1 state:D stack:0 pid:29558 ppid:29557 flags:0x00000002
> > [15884.110258] Call Trace:
> > [15884.110260] <TASK>
> > [15884.110262] __schedule+0x3ee/0x14c0
> > [15884.110267] schedule+0x5e/0xd0
> > [15884.110270] io_schedule+0x46/0x70
> > [15884.110273] folio_wait_bit_common+0x13d/0x350
> > [15884.110278] ? __pfx_wake_page_function+0x10/0x10
> > [15884.110283] filemap_get_pages+0x5fb/0x630
> > [15884.110289] ? terminate_walk+0x61/0x100
> > [15884.110293] filemap_read+0xd9/0x350
> > [15884.110300] vfs_read+0x201/0x350
> > [15884.110307] ksys_read+0x6f/0xf0
> > [15884.110312] do_syscall_64+0x60/0x90
> > [15884.110316] ? __count_memcg_events+0x42/0x90
> > [15884.110319] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.110324] ? handle_mm_fault+0x9e/0x350
> > [15884.110328] ? do_user_addr_fault+0x179/0x640
> > [15884.110333] ? exc_page_fault+0x7f/0x180
> > [15884.110337] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110342] RIP: 0033:0x7feed7b08381
> > [15884.110348] RSP: 002b:00007ffc2a730778 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.110351] RAX: ffffffffffffffda RBX: 00000000037cc0e0 RCX: 00007feed7b08381
> > [15884.110353] RDX: 000000000001fdc8 RSI: 0000000003855760 RDI: 0000000000000006
> > [15884.110355] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.110357] R10: 0000000003855750 R11: 0000000000000246 R12: 000000000369eae0
> > [15884.110359] R13: 0000000000000000 R14: 0000000003855760 R15: 000000000001fdc8
> > [15884.110364] </TASK>
> > [15884.110367] task:ar state:D stack:0 pid:29562 ppid:29560 flags:0x00004002
> > [15884.110371] Call Trace:
> > [15884.110372] <TASK>
> > [15884.110374] __schedule+0x3ee/0x14c0
> > [15884.110378] ? md_handle_request+0x19a/0x220
> > [15884.110383] schedule+0x5e/0xd0
> > [15884.110387] md_super_wait+0xa2/0xe0
> > [15884.110390] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.110395] md_bitmap_unplug+0xd2/0x120
> > [15884.110399] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.110408] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.110417] __blk_flush_plug+0xd7/0x150
> > [15884.110422] blk_finish_plug+0x29/0x40
> > [15884.110426] ext4_do_writepages+0x401/0xc90
> > [15884.110432] ext4_writepages+0xad/0x180
> > [15884.110438] do_writepages+0xd2/0x1e0
> > [15884.110444] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.110448] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.110454] ext4_release_file+0x74/0xb0
> > [15884.110457] __fput+0xf5/0x2a0
> > [15884.110461] task_work_run+0x5d/0x90
> > [15884.110466] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.110470] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.110474] do_syscall_64+0x6c/0x90
> > [15884.110479] ? exit_to_user_mode_prepare+0x188/0x1f0
> > [15884.110482] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.110486] ? do_syscall_64+0x6c/0x90
> > [15884.110489] ? do_syscall_64+0x6c/0x90
> > [15884.110493] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110497] RIP: 0033:0x7f74a3f037b4
> > [15884.110504] RSP: 002b:00007ffd3d9808f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.110507] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f74a3f037b4
> > [15884.110509] RDX: 0000000000002000 RSI: 00007ffd3d980910 RDI: 0000000000000003
> > [15884.110511] RBP: 00007ffd3d982950 R08: 0000555cbacb2780 R09: 0000000000000001
> > [15884.110513] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f74a410bb08
> > [15884.110515] R13: 000000000000000c R14: 0000000000000003 R15: 0000000000000000
> > [15884.110520] </TASK>
> > [15884.110523] task:cc1 state:D stack:0 pid:29567 ppid:29566 flags:0x00000002
> > [15884.110527] Call Trace:
> > [15884.110528] <TASK>
> > [15884.110530] __schedule+0x3ee/0x14c0
> > [15884.110534] ? __rmqueue_pcplist+0xda/0xb80
> > [15884.110540] schedule+0x5e/0xd0
> > [15884.110544] io_schedule+0x46/0x70
> > [15884.110547] folio_wait_bit_common+0x13d/0x350
> > [15884.110551] ? __pfx_wake_page_function+0x10/0x10
> > [15884.110557] filemap_get_pages+0x5fb/0x630
> > [15884.110562] ? release_pages+0x177/0x510
> > [15884.110566] filemap_read+0xd9/0x350
> > [15884.110570] ? __pfx_lru_add_fn+0x10/0x10
> > [15884.110573] ? folio_batch_move_lru+0xd3/0x150
> > [15884.110579] vfs_read+0x201/0x350
> > [15884.110586] ksys_read+0x6f/0xf0
> > [15884.110591] do_syscall_64+0x60/0x90
> > [15884.110594] ? exc_page_fault+0x7f/0x180
> > [15884.110598] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110603] RIP: 0033:0x7fe197b08381
> > [15884.110609] RSP: 002b:00007ffdf102d6e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.110612] RAX: ffffffffffffffda RBX: 0000000003f78f30 RCX: 00007fe197b08381
> > [15884.110615] RDX: 000000000001fdc8 RSI: 0000000003feb830 RDI: 0000000000000006
> > [15884.110617] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.110619] R10: 0000000003feb820 R11: 0000000000000246 R12: 0000000003e43ae0
> > [15884.110621] R13: 0000000000000000 R14: 0000000003feb830 R15: 000000000001fdc8
> > [15884.110626] </TASK>
> > [15884.110629] task:cc1 state:D stack:0 pid:29570 ppid:29569 flags:0x00000002
> > [15884.110633] Call Trace:
> > [15884.110634] <TASK>
> > [15884.110636] __schedule+0x3ee/0x14c0
> > [15884.110642] schedule+0x5e/0xd0
> > [15884.110645] io_schedule+0x46/0x70
> > [15884.110648] folio_wait_bit_common+0x13d/0x350
> > [15884.110653] ? __pfx_wake_page_function+0x10/0x10
> > [15884.110658] filemap_get_pages+0x5fb/0x630
> > [15884.110664] ? generic_fillattr+0x49/0x100
> > [15884.110668] filemap_read+0xd9/0x350
> > [15884.110674] vfs_read+0x201/0x350
> > [15884.110680] ksys_read+0x6f/0xf0
> > [15884.110685] do_syscall_64+0x60/0x90
> > [15884.110689] ? exc_page_fault+0x7f/0x180
> > [15884.110693] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110697] RIP: 0033:0x7fa657508381
> > [15884.110703] RSP: 002b:00007fff0faea488 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.110707] RAX: ffffffffffffffda RBX: 00000000036b6ba0 RCX: 00007fa657508381
> > [15884.110709] RDX: 000000000001fdc8 RSI: 0000000003764340 RDI: 0000000000000006
> > [15884.110711] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.110713] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000035daae0
> > [15884.110715] R13: 0000000000000000 R14: 0000000003764340 R15: 000000000001fdc8
> > [15884.110720] </TASK>
> > [15884.110722] task:ccache state:D stack:0 pid:29572 ppid:23240 flags:0x00000002
> > [15884.110725] Call Trace:
> > [15884.110727] <TASK>
> > [15884.110729] __schedule+0x3ee/0x14c0
> > [15884.110734] schedule+0x5e/0xd0
> > [15884.110737] io_schedule+0x46/0x70
> > [15884.110740] folio_wait_bit_common+0x13d/0x350
> > [15884.110745] ? __pfx_wake_page_function+0x10/0x10
> > [15884.110750] filemap_get_pages+0x5fb/0x630
> > [15884.110757] filemap_read+0xd9/0x350
> > [15884.110764] vfs_read+0x201/0x350
> > [15884.110770] ksys_read+0x6f/0xf0
> > [15884.110775] do_syscall_64+0x60/0x90
> > [15884.110778] ? do_syscall_64+0x6c/0x90
> > [15884.110781] ? __count_memcg_events+0x42/0x90
> > [15884.110785] ? count_memcg_events.constprop.0+0x1a/0x30
> > [15884.110790] ? handle_mm_fault+0x9e/0x350
> > [15884.110794] ? do_user_addr_fault+0x225/0x640
> > [15884.110799] ? exc_page_fault+0x7f/0x180
> > [15884.110803] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110808] RIP: 0033:0x7f1e49508381
> > [15884.110814] RSP: 002b:00007fff99d73ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.110817] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1e49508381
> > [15884.110820] RDX: 0000000000001000 RSI: 000055b5678f9140 RDI: 0000000000000004
> > [15884.110828] RBP: 00007fff99d76000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.110830] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000001000
> > [15884.110832] R13: 00007fff99d73fd0 R14: 00007fff99d75020 R15: 00007fff99d74100
> > [15884.110837] </TASK>
> > [15884.110841] task:ar state:D stack:0 pid:29579 ppid:29577 flags:0x00004002
> > [15884.110845] Call Trace:
> > [15884.110846] <TASK>
> > [15884.110848] __schedule+0x3ee/0x14c0
> > [15884.110852] ? md_handle_request+0x19a/0x220
> > [15884.110857] schedule+0x5e/0xd0
> > [15884.110860] md_super_wait+0xa2/0xe0
> > [15884.110864] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.110868] md_bitmap_unplug+0xd2/0x120
> > [15884.110872] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.110881] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.110890] __blk_flush_plug+0xd7/0x150
> > [15884.110896] blk_finish_plug+0x29/0x40
> > [15884.110900] ext4_do_writepages+0x401/0xc90
> > [15884.110906] ext4_writepages+0xad/0x180
> > [15884.110912] do_writepages+0xd2/0x1e0
> > [15884.110917] ? atime_needs_update+0xa0/0x120
> > [15884.110922] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.110927] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.110932] ext4_release_file+0x74/0xb0
> > [15884.110936] __fput+0xf5/0x2a0
> > [15884.110940] task_work_run+0x5d/0x90
> > [15884.110945] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.110949] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.110953] do_syscall_64+0x6c/0x90
> > [15884.110956] ? __rseq_handle_notify_resume+0xa9/0x4f0
> > [15884.110960] ? kmem_cache_free+0x22/0x3a0
> > [15884.110964] ? __call_rcu_common.constprop.0+0xe5/0x6c0
> > [15884.110969] ? exit_to_user_mode_prepare+0x188/0x1f0
> > [15884.110972] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.110976] ? do_syscall_64+0x6c/0x90
> > [15884.110979] ? do_syscall_64+0x6c/0x90
> > [15884.110983] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.110987] RIP: 0033:0x7ffa139037b4
> > [15884.110994] RSP: 002b:00007fff88e7d288 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.110997] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ffa139037b4
> > [15884.110999] RDX: 0000000000002000 RSI: 00007fff88e7d2a0 RDI: 0000000000000003
> > [15884.111001] RBP: 00007fff88e7f2e0 R08: 00005631d3292780 R09: 0000000000000001
> > [15884.111003] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffa13b5ab08
> > [15884.111005] R13: 000000000000000d R14: 0000000000000003 R15: 0000000000000000
> > [15884.111010] </TASK>
> > [15884.111013] task:cc1 state:D stack:0 pid:29582 ppid:29581 flags:0x00000002
> > [15884.111017] Call Trace:
> > [15884.111019] <TASK>
> > [15884.111021] __schedule+0x3ee/0x14c0
> > [15884.111024] ? __filemap_get_folio+0x166/0x230
> > [15884.111030] schedule+0x5e/0xd0
> > [15884.111033] io_schedule+0x46/0x70
> > [15884.111036] folio_wait_bit_common+0x13d/0x350
> > [15884.111041] ? __pfx_wake_page_function+0x10/0x10
> > [15884.111046] filemap_get_pages+0x5fb/0x630
> > [15884.111051] ? filename_lookup+0xe8/0x1f0
> > [15884.111055] ? avc_has_perm_noaudit+0x6b/0xf0
> > [15884.111060] filemap_read+0xd9/0x350
> > [15884.111067] vfs_read+0x201/0x350
> > [15884.111074] ksys_read+0x6f/0xf0
> > [15884.111079] do_syscall_64+0x60/0x90
> > [15884.111082] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111086] ? do_syscall_64+0x6c/0x90
> > [15884.111089] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111093] ? do_syscall_64+0x6c/0x90
> > [15884.111096] ? exc_page_fault+0x7f/0x180
> > [15884.111100] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.111105] RIP: 0033:0x7f1bee108381
> > [15884.111111] RSP: 002b:00007ffd89f20808 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
> > [15884.111114] RAX: ffffffffffffffda RBX: 00000000034e18a0 RCX: 00007f1bee108381
> > [15884.111117] RDX: 000000000001fdc8 RSI: 0000000003584eb0 RDI: 0000000000000006
> > [15884.111119] RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000001
> > [15884.111121] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000033ecae0
> > [15884.111123] R13: 0000000000000000 R14: 0000000003584eb0 R15: 000000000001fdc8
> > [15884.111128] </TASK>
> > [15884.111131] task:ar state:D stack:0 pid:29591 ppid:29589 flags:0x00004002
> > [15884.111134] Call Trace:
> > [15884.111136] <TASK>
> > [15884.111138] __schedule+0x3ee/0x14c0
> > [15884.111142] ? md_handle_request+0x19a/0x220
> > [15884.111147] schedule+0x5e/0xd0
> > [15884.111150] md_super_wait+0xa2/0xe0
> > [15884.111154] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.111158] md_bitmap_unplug+0xd2/0x120
> > [15884.111162] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.111171] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.111180] __blk_flush_plug+0xd7/0x150
> > [15884.111185] blk_finish_plug+0x29/0x40
> > [15884.111189] ext4_do_writepages+0x401/0xc90
> > [15884.111196] ext4_writepages+0xad/0x180
> > [15884.111202] do_writepages+0xd2/0x1e0
> > [15884.111207] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.111212] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.111217] ext4_release_file+0x74/0xb0
> > [15884.111221] __fput+0xf5/0x2a0
> > [15884.111225] task_work_run+0x5d/0x90
> > [15884.111230] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.111234] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111238] do_syscall_64+0x6c/0x90
> > [15884.111241] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111245] ? do_syscall_64+0x6c/0x90
> > [15884.111248] ? do_syscall_64+0x6c/0x90
> > [15884.111251] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111254] ? do_syscall_64+0x6c/0x90
> > [15884.111258] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.111262] RIP: 0033:0x7f5c895037b4
> > [15884.111269] RSP: 002b:00007ffefde48ad8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.111272] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5c895037b4
> > [15884.111274] RDX: 0000000000002000 RSI: 00007ffefde48af0 RDI: 0000000000000003
> > [15884.111276] RBP: 00007ffefde4ab30 R08: 0000557aafa18780 R09: 0000000000000001
> > [15884.111278] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f5c89644b08
> > [15884.111281] R13: 0000000000000022 R14: 0000000000000003 R15: 0000000000000000
> > [15884.111285] </TASK>
> > [15884.111288] task:ar state:D stack:0 pid:29594 ppid:29592 flags:0x00004002
> > [15884.111292] Call Trace:
> > [15884.111293] <TASK>
> > [15884.111295] __schedule+0x3ee/0x14c0
> > [15884.111299] ? md_handle_request+0x19a/0x220
> > [15884.111304] schedule+0x5e/0xd0
> > [15884.111307] md_super_wait+0xa2/0xe0
> > [15884.111311] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.111315] md_bitmap_unplug+0xd2/0x120
> > [15884.111319] flush_bio_list+0xf3/0x100 [raid1]
> > [15884.111328] raid1_unplug+0x3b/0xb0 [raid1]
> > [15884.111336] __blk_flush_plug+0xd7/0x150
> > [15884.111342] blk_finish_plug+0x29/0x40
> > [15884.111346] ext4_do_writepages+0x401/0xc90
> > [15884.111352] ext4_writepages+0xad/0x180
> > [15884.111358] do_writepages+0xd2/0x1e0
> > [15884.111364] filemap_fdatawrite_wbc+0x63/0x90
> > [15884.111369] __filemap_fdatawrite_range+0x5c/0x80
> > [15884.111374] ext4_release_file+0x74/0xb0
> > [15884.111378] __fput+0xf5/0x2a0
> > [15884.111382] task_work_run+0x5d/0x90
> > [15884.111386] exit_to_user_mode_prepare+0x1e6/0x1f0
> > [15884.111390] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111394] do_syscall_64+0x6c/0x90
> > [15884.111397] ? exit_to_user_mode_prepare+0x188/0x1f0
> > [15884.111401] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111404] ? do_syscall_64+0x6c/0x90
> > [15884.111407] ? do_syscall_64+0x6c/0x90
> > [15884.111410] ? do_syscall_64+0x6c/0x90
> > [15884.111413] ? do_syscall_64+0x6c/0x90
> > [15884.111416] ? do_syscall_64+0x6c/0x90
> > [15884.111419] ? do_syscall_64+0x6c/0x90
> > [15884.111423] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.111427] RIP: 0033:0x7ff3905037b4
> > [15884.111433] RSP: 002b:00007fffc71b6e38 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> > [15884.111437] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff3905037b4
> > [15884.111439] RDX: 0000000000002000 RSI: 00007fffc71b6e50 RDI: 0000000000000003
> > [15884.111441] RBP: 00007fffc71b8e90 R08: 00005571b8726780 R09: 0000000000000001
> > [15884.111443] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ff39076ab08
> > [15884.111445] R13: 0000000000000009 R14: 0000000000000003 R15: 0000000000000000
> > [15884.111450] </TASK>
> > [15884.111465] task:lvs state:D stack:0 pid:29780 ppid:29658 flags:0x00004006
> > [15884.111469] Call Trace:
> > [15884.111470] <TASK>
> > [15884.111472] __schedule+0x3ee/0x14c0
> > [15884.111478] schedule+0x5e/0xd0
> > [15884.111481] schedule_timeout+0x151/0x160
> > [15884.111486] wait_for_completion+0x8a/0x160
> > [15884.111491] exit_aio+0x10d/0x120
> > [15884.111496] __mmput+0x12/0x130
> > [15884.111500] do_exit+0x305/0xb10
> > [15884.111504] ? aio_read_events_ring+0x19b/0x220
> > [15884.111511] do_group_exit+0x31/0x80
> > [15884.111515] get_signal+0x9a5/0x9e0
> > [15884.111519] ? read_events+0x199/0x1d0
> > [15884.111522] ? __pfx_autoremove_wake_function+0x10/0x10
> > [15884.111526] arch_do_signal_or_restart+0x3e/0x270
> > [15884.111534] exit_to_user_mode_prepare+0x195/0x1f0
> > [15884.111537] syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111541] do_syscall_64+0x6c/0x90
> > [15884.111544] ? exit_to_user_mode_prepare+0x142/0x1f0
> > [15884.111548] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111552] ? do_syscall_64+0x6c/0x90
> > [15884.111555] ? syscall_exit_to_user_mode+0x1b/0x40
> > [15884.111558] ? do_syscall_64+0x6c/0x90
> > [15884.111561] ? exit_to_user_mode_prepare+0x142/0x1f0
> > [15884.111565] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
> > [15884.111569] RIP: 0033:0x7f9f0fd1380d
> > [15884.111575] RSP: 002b:00007fff94bfb4c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d0
> > [15884.111579] RAX: fffffffffffffffc RBX: 00007f9f101f0000 RCX: 00007f9f0fd1380d
> > [15884.111581] RDX: 0000000000000040 RSI: 0000000000000001 RDI: 00007f9f101f0000
> > [15884.111583] RBP: 00007fff94bfb510 R08: 0000000000000000 R09: 0000000294bfba10
> > [15884.111586] R10: 00007fff94bfb520 R11: 0000000000000246 R12: 0000000000000001
> > [15884.111588] R13: 0000000000000040 R14: 00007f9f0fe4f090 R15: 00007fff94bfb520
> > [15884.111593] </TASK>
> >
> >
>
--
-----Open up your eyes, open up your mind, open up your code -------
/ Dr. David Alan Gilbert | Running GNU/Linux | Happy \
\ dave @ treblig.org | | In Hex /
\ _________________________|_____ http://www.treblig.org |_______/