Message-ID: <9b3cf95b-2839-dc25-913c-fd3c19b114e1@gmail.com>
Date:   Sun, 24 Jul 2022 15:59:07 +0200
From:   Edward Shishkin <edward.shishkin@...il.com>
To:     Metztli Information Technology <jose.r.r@...ztli.com>,
        reiserfs-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Issues with Reiser4 SFRN 4.0.2 modified patch for Linux 5.17.xy

On 7/24/22 01:22, Metztli Information Technology wrote:
> Niltze [Hello], Ed-
>
> Having experienced hanging issue(s) with reiser4-for-5.16.patch.gz I decided to apply the patch to kernel 5.17.6/5.17.12 --
> modifying the patch as I proceede along; here is my modified patch for linux 5.17.xy:
> < https://metztli.blog/nochtli/tliltic?download=926 >
>
> I have been running that reiser4 SFRN 4.0.2 -patched kernel for 42+ days
> < https://metztli.it/bullseye/reiser4.0.2-amd-ryzen.png >
>   in an online server, ruby, LEMP, etc., where
> the only issue I experience is related to memory depletion, i.e., when building a kernel and/or sustained data intensive operations.
>
> Similarly, running Intel version of kernel locally but interacting with desktop userland applications often degrades the
> performance of the system by introducing a hang-like condition (see concatenated dmesg tail subsequently after the three(3) dotted segment below).
>
> As Debian Bullseye backports is now at kernel 5.18.xy, I have tried to enhance your reiser4 patch to target that kernel as my Reiser4 netboot installers depend on it. Nevertheless, I have not succeeded in properly patching that newer kernel.

Sure.  5.18 contains a lot of VFS changes. Porting hasn't yet completed..

Thanks,
Edward.

>   Any updates would be appreciated.
>
> ...
> [44950.574859] INFO: task umount:21534 blocked for more than 120 seconds.
> [44950.574871]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [44950.574874] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [44950.574876] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [44950.574882] Call Trace:
> [44950.574885]  <TASK>
> [44950.574889]  __schedule+0x307/0x9e0
> [44950.574901]  schedule+0x4e/0xc0
> [44950.574906]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [44950.574913]  ? fsnotify_grab_connector+0x20/0x90
> [44950.574919]  deactivate_super+0x2c/0x40
> [44950.574926]  cleanup_mnt+0x131/0x190
> [44950.574932]  task_work_run+0x5c/0x90
> [44950.574936]  exit_to_user_mode_prepare+0x200/0x210
> [44950.574943]  syscall_exit_to_user_mode+0x18/0x40
> [44950.574947]  do_syscall_64+0x48/0xc0
> [44950.574952]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [44950.574957] RIP: 0033:0x7f506e43ce27
> [44950.574961] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [44950.574965] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [44950.574967] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [44950.574969] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [44950.574971] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [44950.574973] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [44950.574977]  </TASK>
> [45071.406956] INFO: task umount:21534 blocked for more than 241 seconds.
> [45071.406972]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45071.406977] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45071.406982] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45071.406994] Call Trace:
> [45071.406998]  <TASK>
> [45071.407006]  __schedule+0x307/0x9e0
> [45071.407027]  schedule+0x4e/0xc0
> [45071.407034]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45071.407043]  ? fsnotify_grab_connector+0x20/0x90
> [45071.407053]  deactivate_super+0x2c/0x40
> [45071.407062]  cleanup_mnt+0x131/0x190
> [45071.407070]  task_work_run+0x5c/0x90
> [45071.407076]  exit_to_user_mode_prepare+0x200/0x210
> [45071.407084]  syscall_exit_to_user_mode+0x18/0x40
> [45071.407089]  do_syscall_64+0x48/0xc0
> [45071.407098]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45071.407107] RIP: 0033:0x7f506e43ce27
> [45071.407112] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45071.407119] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45071.407122] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45071.407125] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45071.407128] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45071.407131] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45071.407137]  </TASK>
> [45192.238981] INFO: task umount:21534 blocked for more than 362 seconds.
> [45192.239006]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45192.239013] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45192.239018] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45192.239032] Call Trace:
> [45192.239038]  <TASK>
> [45192.239045]  __schedule+0x307/0x9e0
> [45192.239070]  schedule+0x4e/0xc0
> [45192.239082]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45192.239095]  ? fsnotify_grab_connector+0x20/0x90
> [45192.239111]  deactivate_super+0x2c/0x40
> [45192.239124]  cleanup_mnt+0x131/0x190
> [45192.239138]  task_work_run+0x5c/0x90
> [45192.239148]  exit_to_user_mode_prepare+0x200/0x210
> [45192.239160]  syscall_exit_to_user_mode+0x18/0x40
> [45192.239169]  do_syscall_64+0x48/0xc0
> [45192.239182]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45192.239195] RIP: 0033:0x7f506e43ce27
> [45192.239203] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45192.239212] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45192.239218] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45192.239222] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45192.239227] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45192.239232] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45192.239241]  </TASK>
> [45313.075008] INFO: task umount:21534 blocked for more than 483 seconds.
> [45313.075038]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45313.075050] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45313.075059] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45313.075078] Call Trace:
> [45313.075083]  <TASK>
> [45313.075091]  __schedule+0x307/0x9e0
> [45313.075117]  schedule+0x4e/0xc0
> [45313.075130]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45313.075144]  ? fsnotify_grab_connector+0x20/0x90
> [45313.075159]  deactivate_super+0x2c/0x40
> [45313.075173]  cleanup_mnt+0x131/0x190
> [45313.075186]  task_work_run+0x5c/0x90
> [45313.075197]  exit_to_user_mode_prepare+0x200/0x210
> [45313.075209]  syscall_exit_to_user_mode+0x18/0x40
> [45313.075218]  do_syscall_64+0x48/0xc0
> [45313.075231]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45313.075243] RIP: 0033:0x7f506e43ce27
> [45313.075252] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45313.075261] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45313.075267] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45313.075272] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45313.075276] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45313.075281] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45313.075290]  </TASK>
> [45433.903013] INFO: task umount:21534 blocked for more than 604 seconds.
> [45433.903038]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45433.903045] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45433.903050] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45433.903064] Call Trace:
> [45433.903069]  <TASK>
> [45433.903077]  __schedule+0x307/0x9e0
> [45433.903102]  schedule+0x4e/0xc0
> [45433.903114]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45433.903128]  ? fsnotify_grab_connector+0x20/0x90
> [45433.903143]  deactivate_super+0x2c/0x40
> [45433.903157]  cleanup_mnt+0x131/0x190
> [45433.903170]  task_work_run+0x5c/0x90
> [45433.903182]  exit_to_user_mode_prepare+0x200/0x210
> [45433.903193]  syscall_exit_to_user_mode+0x18/0x40
> [45433.903202]  do_syscall_64+0x48/0xc0
> [45433.903215]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45433.903227] RIP: 0033:0x7f506e43ce27
> [45433.903236] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45433.903246] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45433.903252] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45433.903256] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45433.903261] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45433.903266] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45433.903275]  </TASK>
> [45554.735055] INFO: task umount:21534 blocked for more than 724 seconds.
> [45554.735078]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45554.735085] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45554.735090] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45554.735105] Call Trace:
> [45554.735110]  <TASK>
> [45554.735119]  __schedule+0x307/0x9e0
> [45554.735144]  schedule+0x4e/0xc0
> [45554.735156]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45554.735169]  ? fsnotify_grab_connector+0x20/0x90
> [45554.735184]  deactivate_super+0x2c/0x40
> [45554.735199]  cleanup_mnt+0x131/0x190
> [45554.735211]  task_work_run+0x5c/0x90
> [45554.735222]  exit_to_user_mode_prepare+0x200/0x210
> [45554.735234]  syscall_exit_to_user_mode+0x18/0x40
> [45554.735243]  do_syscall_64+0x48/0xc0
> [45554.735255]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45554.735268] RIP: 0033:0x7f506e43ce27
> [45554.735276] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45554.735286] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45554.735292] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45554.735296] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45554.735301] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45554.735306] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45554.735315]  </TASK>
> [45675.567002] INFO: task umount:21534 blocked for more than 845 seconds.
> [45675.567025]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45675.567033] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45675.567038] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45675.567052] Call Trace:
> [45675.567058]  <TASK>
> [45675.567066]  __schedule+0x307/0x9e0
> [45675.567090]  schedule+0x4e/0xc0
> [45675.567102]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45675.567116]  ? fsnotify_grab_connector+0x20/0x90
> [45675.567131]  deactivate_super+0x2c/0x40
> [45675.567145]  cleanup_mnt+0x131/0x190
> [45675.567158]  task_work_run+0x5c/0x90
> [45675.567168]  exit_to_user_mode_prepare+0x200/0x210
> [45675.567180]  syscall_exit_to_user_mode+0x18/0x40
> [45675.567189]  do_syscall_64+0x48/0xc0
> [45675.567201]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45675.567214] RIP: 0033:0x7f506e43ce27
> [45675.567222] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45675.567231] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45675.567237] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45675.567242] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45675.567246] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45675.567251] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45675.567260]  </TASK>
> [45796.398969] INFO: task umount:21534 blocked for more than 966 seconds.
> [45796.398994]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45796.399002] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45796.399007] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45796.399021] Call Trace:
> [45796.399027]  <TASK>
> [45796.399035]  __schedule+0x307/0x9e0
> [45796.399060]  schedule+0x4e/0xc0
> [45796.399072]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45796.399085]  ? fsnotify_grab_connector+0x20/0x90
> [45796.399100]  deactivate_super+0x2c/0x40
> [45796.399114]  cleanup_mnt+0x131/0x190
> [45796.399127]  task_work_run+0x5c/0x90
> [45796.399138]  exit_to_user_mode_prepare+0x200/0x210
> [45796.399149]  syscall_exit_to_user_mode+0x18/0x40
> [45796.399158]  do_syscall_64+0x48/0xc0
> [45796.399170]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45796.399182] RIP: 0033:0x7f506e43ce27
> [45796.399191] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45796.399201] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45796.399206] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45796.399211] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45796.399216] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45796.399221] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45796.399230]  </TASK>
> [45917.231038] INFO: task umount:21534 blocked for more than 1087 seconds.
> [45917.231062]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [45917.231070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [45917.231075] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [45917.231089] Call Trace:
> [45917.231094]  <TASK>
> [45917.231102]  __schedule+0x307/0x9e0
> [45917.231127]  schedule+0x4e/0xc0
> [45917.231139]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [45917.231152]  ? fsnotify_grab_connector+0x20/0x90
> [45917.231168]  deactivate_super+0x2c/0x40
> [45917.231181]  cleanup_mnt+0x131/0x190
> [45917.231194]  task_work_run+0x5c/0x90
> [45917.231205]  exit_to_user_mode_prepare+0x200/0x210
> [45917.231217]  syscall_exit_to_user_mode+0x18/0x40
> [45917.231226]  do_syscall_64+0x48/0xc0
> [45917.231238]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [45917.231251] RIP: 0033:0x7f506e43ce27
> [45917.231259] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [45917.231269] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [45917.231275] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [45917.231279] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [45917.231284] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [45917.231289] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [45917.231298]  </TASK>
> [46038.062935] INFO: task umount:21534 blocked for more than 1208 seconds.
> [46038.062959]       Tainted: G            E     5.17.0-3+reiser4.0.2-amd64 #1 Debian 5.17.12-2+reiser4.0.2
> [46038.062967] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [46038.062972] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [46038.062987] Call Trace:
> [46038.062992]  <TASK>
> [46038.063000]  __schedule+0x307/0x9e0
> [46038.063024]  schedule+0x4e/0xc0
> [46038.063036]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [46038.063050]  ? fsnotify_grab_connector+0x20/0x90
> [46038.063065]  deactivate_super+0x2c/0x40
> [46038.063079]  cleanup_mnt+0x131/0x190
> [46038.063092]  task_work_run+0x5c/0x90
> [46038.063103]  exit_to_user_mode_prepare+0x200/0x210
> [46038.063115]  syscall_exit_to_user_mode+0x18/0x40
> [46038.063123]  do_syscall_64+0x48/0xc0
> [46038.063135]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [46038.063149] RIP: 0033:0x7f506e43ce27
> [46038.063161] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [46038.063175] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [46038.063184] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [46038.063192] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [46038.063200] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [46038.063209] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [46038.063221]  </TASK>
> [51091.892156] sysrq: Show Blocked State
> [51091.892227] task:kworker/u16:3   state:D stack:    0 pid:21032 ppid:     2 flags:0x00004000
> [51091.892234] Workqueue: writeback wb_workfn (flush-8:0)
> [51091.892243] Call Trace:
> [51091.892245]  <TASK>
> [51091.892249]  __schedule+0x307/0x9e0
> [51091.892258]  schedule+0x4e/0xc0
> [51091.892263]  io_schedule+0x47/0x70
> [51091.892268]  folio_wait_bit_common+0x147/0x390
> [51091.892274]  ? file_fdatawait_range+0x20/0x20
> [51091.892278]  folio_wait_writeback+0x28/0x80
> [51091.892285]  jwait_io+0x4b/0x60 [reiser4]
> [51091.892310]  reiser4_write_logs+0x897/0xc70 [reiser4]
> [51091.892341]  ? commit_txnh+0x3db/0x580 [reiser4]
> [51091.892367]  ? reiser4_txn_restart+0x1e/0x70 [reiser4]
> [51091.892392]  ? flush_some_atom+0x330/0x570 [reiser4]
> [51091.892418]  ? reiser4_writeout+0x10a/0x180 [reiser4]
> [51091.892447]  ? reiser4_writeback_inodes+0xb0/0xe0 [reiser4]
> [51091.892474]  ? writeback_sb_inodes+0x8f/0xb0
> [51091.892478]  ? __writeback_inodes_wb+0x4c/0xe0
> [51091.892482]  ? wb_writeback+0x1d7/0x2c0
> [51091.892486]  ? wb_workfn+0x2ed/0x510
> [51091.892489]  ? psi_task_switch+0xbc/0x1f0
> [51091.892493]  ? _raw_spin_unlock+0x16/0x30
> [51091.892497]  ? process_one_work+0x1e5/0x3b0
> [51091.892501]  ? rescuer_thread+0x390/0x390
> [51091.892504]  ? worker_thread+0x50/0x3a0
> [51091.892506]  ? rescuer_thread+0x390/0x390
> [51091.892509]  ? kthread+0xe7/0x110
> [51091.892513]  ? kthread_complete_and_exit+0x20/0x20
> [51091.892517]  ? ret_from_fork+0x22/0x30
> [51091.892523]  </TASK>
> [51091.892527] task:umount          state:D stack:    0 pid:21534 ppid:  3155 flags:0x00004000
> [51091.892531] Call Trace:
> [51091.892533]  <TASK>
> [51091.892535]  __schedule+0x307/0x9e0
> [51091.892541]  schedule+0x4e/0xc0
> [51091.892545]  rwsem_down_write_slowpath+0x2a7/0x5a0
> [51091.892549]  ? fsnotify_grab_connector+0x20/0x90
> [51091.892556]  deactivate_super+0x2c/0x40
> [51091.892561]  cleanup_mnt+0x131/0x190
> [51091.892567]  task_work_run+0x5c/0x90
> [51091.892571]  exit_to_user_mode_prepare+0x200/0x210
> [51091.892576]  syscall_exit_to_user_mode+0x18/0x40
> [51091.892580]  do_syscall_64+0x48/0xc0
> [51091.892585]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [51091.892590] RIP: 0033:0x7f506e43ce27
> [51091.892594] RSP: 002b:00007ffff5f00c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
> [51091.892597] RAX: 0000000000000000 RBX: 00007f506e560264 RCX: 00007f506e43ce27
> [51091.892600] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055ff1a1c0f90
> [51091.892601] RBP: 000055ff1a1bc9a0 R08: 0000000000000000 R09: 00007ffff5effa20
> [51091.892603] R10: 000055ff1a1c0fb0 R11: 0000000000000246 R12: 0000000000000000
> [51091.892605] R13: 000055ff1a1c0f90 R14: 000055ff1a1bcab0 R15: 000055ff1a1bcbd0
> [51091.892609]  </TASK>
>
>
> Best Professional Regards.
>
> Jose R R
> http://metztli.it
> ---------------------------------------------------------------------------------------------
> Download Metztli Reiser4: Debian Bullseye w/ Linux 5.16.20 AMD64
> ---------------------------------------------------------------------------------------------
> feats ZSTD compression https://sf.net/projects/metztli-reiser4/
> ---------------------------------------------------------------------------------------------
> or SFRN 5.1.3, Metztli Reiser5 https://sf.net/projects/debian-reiser4/
> -------------------------------------------------------------------------------------------
> Official current Reiser4 resources: https://reiser4.wiki.kernel.org/

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