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Date: Wed, 16 Feb 2022 13:15:17 +0900
From: Byungchul Park <byungchul.park@....com>
To: tytso@....edu, adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org
Cc: torvalds@...ux-foundation.org, mingo@...hat.com,
linux-kernel@...r.kernel.org, peterz@...radead.org,
will@...nel.org, tglx@...utronix.de, rostedt@...dmis.org,
joel@...lfernandes.org, sashal@...nel.org, daniel.vetter@...ll.ch,
chris@...is-wilson.co.uk, duyuyang@...il.com,
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david@...morbit.com, amir73il@...il.com, bfields@...ldses.org,
gregkh@...uxfoundation.org, kernel-team@....com,
linux-mm@...ck.org, akpm@...ux-foundation.org, mhocko@...nel.org,
minchan@...nel.org, hannes@...xchg.org, vdavydov.dev@...il.com,
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penberg@...nel.org, rientjes@...gle.com, vbabka@...e.cz,
ngupta@...are.org, linux-block@...r.kernel.org, axboe@...nel.dk,
paolo.valente@...aro.org, josef@...icpanda.com,
linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk,
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hch@...radead.org, djwong@...nel.org,
dri-devel@...ts.freedesktop.org, airlied@...ux.ie,
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hamohammed.sa@...il.com
Subject: Report in ksys_write()
[ 7.382619] ===================================================
[ 7.382623] DEPT: Circular dependency has been detected.
[ 7.382624] 5.17.0-rc1-00014-gcf3441bb2012 #2 Tainted: G W
[ 7.382625] ---------------------------------------------------
[ 7.382626] summary
[ 7.382627] ---------------------------------------------------
[ 7.382627] *** DEADLOCK ***
[ 7.382627]
[ 7.382628] context A
[ 7.382628] [S] (unknown)(&(&journal->j_wait_commit)->dmap:0)
[ 7.382630] [W] __mutex_lock_common(&f->f_pos_lock:0)
[ 7.382631] [E] event(&(&journal->j_wait_commit)->dmap:0)
[ 7.382633]
[ 7.382633] context B
[ 7.382634] [S] __raw_write_lock(&journal->j_state_lock:8)
[ 7.382635] [W] wait(&(&journal->j_wait_commit)->dmap:0)
[ 7.382636] [E] write_unlock(&journal->j_state_lock:8)
[ 7.382637]
[ 7.382638] context C
[ 7.382639] [S] __mutex_lock_common(&f->f_pos_lock:0)
[ 7.382640] [W] __raw_read_lock(&journal->j_state_lock:8)
[ 7.382641] [E] mutex_unlock(&f->f_pos_lock:0)
[ 7.382642]
[ 7.382642] [S]: start of the event context
[ 7.382643] [W]: the wait blocked
[ 7.382643] [E]: the event not reachable
[ 7.382644] ---------------------------------------------------
[ 7.382645] context A's detail
[ 7.382645] ---------------------------------------------------
[ 7.382646] context A
[ 7.382647] [S] (unknown)(&(&journal->j_wait_commit)->dmap:0)
[ 7.382648] [W] __mutex_lock_common(&f->f_pos_lock:0)
[ 7.382649] [E] event(&(&journal->j_wait_commit)->dmap:0)
[ 7.382650]
[ 7.382650] [S] (unknown)(&(&journal->j_wait_commit)->dmap:0):
[ 7.382651] (N/A)
[ 7.382652]
[ 7.382652] [W] __mutex_lock_common(&f->f_pos_lock:0):
[ 7.382653] [<ffffffff8124ff73>] __fdget_pos+0x43/0x50
[ 7.382658] stacktrace:
[ 7.382659] __mutex_lock+0x52c/0x900
[ 7.382662] __fdget_pos+0x43/0x50
[ 7.382663] ksys_write+0x15/0xc0
[ 7.382665] do_syscall_64+0x3a/0x90
[ 7.382668] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 7.382670]
[ 7.382671] [E] event(&(&journal->j_wait_commit)->dmap:0):
[ 7.382672] [<ffffffff810baa53>] __wake_up_common+0x93/0x1a0
[ 7.382674] stacktrace:
[ 7.382674] dept_event+0x12b/0x1f0
[ 7.382677] __wake_up_common+0xb0/0x1a0
[ 7.382678] __wake_up_common_lock+0x65/0x90
[ 7.382679] __jbd2_log_start_commit+0x8a/0xa0
[ 7.382682] jbd2_log_start_commit+0x24/0x40
[ 7.382683] __jbd2_journal_force_commit+0x91/0xb0
[ 7.382685] jbd2_journal_force_commit_nested+0x5/0x10
[ 7.382686] ext4_should_retry_alloc+0x5b/0xb0
[ 7.382689] ext4_da_write_begin+0xf2/0x2a0
[ 7.382691] generic_perform_write+0xa6/0x1c0
[ 7.382693] ext4_buffered_write_iter+0x89/0x100
[ 7.382695] ext4_file_write_iter+0x4a/0x7f0
[ 7.382697] new_sync_write+0x100/0x190
[ 7.382700] vfs_write+0x134/0x360
[ 7.382702] ksys_write+0x4d/0xc0
[ 7.382703] do_syscall_64+0x3a/0x90
[ 7.382705] ---------------------------------------------------
[ 7.382705] context B's detail
[ 7.382706] ---------------------------------------------------
[ 7.382706] context B
[ 7.382707] [S] __raw_write_lock(&journal->j_state_lock:8)
[ 7.382708] [W] wait(&(&journal->j_wait_commit)->dmap:0)
[ 7.382709] [E] write_unlock(&journal->j_state_lock:8)
[ 7.382710]
[ 7.382711] [S] __raw_write_lock(&journal->j_state_lock:8):
[ 7.382712] [<ffffffff81346e9e>] kjournald2+0x7e/0x260
[ 7.382713] stacktrace:
[ 7.382714] _raw_write_lock+0x6e/0x90
[ 7.382716] kjournald2+0x7e/0x260
[ 7.382717] kthread+0xe3/0x110
[ 7.382720] ret_from_fork+0x22/0x30
[ 7.382722]
[ 7.382723] [W] wait(&(&journal->j_wait_commit)->dmap:0):
[ 7.382724] [<ffffffff810bb017>] prepare_to_wait+0x47/0xd0
[ 7.382725] stacktrace:
[ 7.382726] kjournald2+0x164/0x260
[ 7.382727] kthread+0xe3/0x110
[ 7.382729] ret_from_fork+0x22/0x30
[ 7.382731]
[ 7.382731] [E] write_unlock(&journal->j_state_lock:8):
[ 7.382732] [<ffffffff8134700b>] kjournald2+0x1eb/0x260
[ 7.382734] stacktrace:
[ 7.382734] _raw_write_unlock+0x30/0x70
[ 7.382736] kjournald2+0x1eb/0x260
[ 7.382737] kthread+0xe3/0x110
[ 7.382739] ret_from_fork+0x22/0x30
[ 7.382740] ---------------------------------------------------
[ 7.382741] context C's detail
[ 7.382742] ---------------------------------------------------
[ 7.382742] context C
[ 7.382743] [S] __mutex_lock_common(&f->f_pos_lock:0)
[ 7.382744] [W] __raw_read_lock(&journal->j_state_lock:8)
[ 7.382745] [E] mutex_unlock(&f->f_pos_lock:0)
[ 7.382746]
[ 7.382746] [S] __mutex_lock_common(&f->f_pos_lock:0):
[ 7.382747] [<ffffffff8124ff73>] __fdget_pos+0x43/0x50
[ 7.382749] stacktrace:
[ 7.382750] __mutex_lock+0x54d/0x900
[ 7.382751] __fdget_pos+0x43/0x50
[ 7.382753] ksys_write+0x15/0xc0
[ 7.382754] do_syscall_64+0x3a/0x90
[ 7.382756] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 7.382758]
[ 7.382758] [W] __raw_read_lock(&journal->j_state_lock:8):
[ 7.382759] [<ffffffff8133cd87>] start_this_handle+0xa7/0x5e0
[ 7.382762] stacktrace:
[ 7.382763] _raw_read_lock+0x57/0xd0
[ 7.382765] start_this_handle+0xa7/0x5e0
[ 7.382766] jbd2__journal_start+0xe6/0x220
[ 7.382768] __ext4_journal_start_sb+0x11c/0x150
[ 7.382770] ext4_dirty_inode+0x2f/0x70
[ 7.382771] __mark_inode_dirty+0x1ba/0x400
[ 7.382774] generic_update_time+0x99/0xc0
[ 7.382775] file_update_time+0x85/0xe0
[ 7.382777] ext4_buffered_write_iter+0x56/0x100
[ 7.382779] ext4_file_write_iter+0x4a/0x7f0
[ 7.382781] new_sync_write+0x100/0x190
[ 7.382783] vfs_write+0x134/0x360
[ 7.382785] ksys_write+0x4d/0xc0
[ 7.382786] do_syscall_64+0x3a/0x90
[ 7.382788] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 7.382790]
[ 7.382790] [E] mutex_unlock(&f->f_pos_lock:0):
[ 7.382791] [<ffffffff8122c800>] ksys_write+0x90/0xc0
[ 7.382792] stacktrace:
[ 7.382793] __mutex_unlock_slowpath+0x49/0x2a0
[ 7.382795] ksys_write+0x90/0xc0
[ 7.382796] do_syscall_64+0x3a/0x90
[ 7.382797] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 7.382799] ---------------------------------------------------
[ 7.382800] information that might be helpful
[ 7.382801] ---------------------------------------------------
[ 7.382802] CPU: 1 PID: 628 Comm: rs:main Q:Reg Tainted: G W 5.17.0-rc1-00014-gcf3441bb2012 #2
[ 7.382804] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 7.382805] Call Trace:
[ 7.382807] <TASK>
[ 7.382808] dump_stack_lvl+0x44/0x57
[ 7.382810] print_circle+0x384/0x510
[ 7.382812] ? unwind_get_return_address+0x16/0x30
[ 7.382816] ? print_circle+0x510/0x510
[ 7.382818] cb_check_dl+0x58/0x60
[ 7.382819] bfs+0xdc/0x1b0
[ 7.382822] add_dep+0x94/0x120
[ 7.382824] do_event.isra.22+0x284/0x300
[ 7.382826] ? __wake_up_common+0x93/0x1a0
[ 7.382827] dept_event+0x12b/0x1f0
[ 7.382829] __wake_up_common+0xb0/0x1a0
[ 7.382831] __wake_up_common_lock+0x65/0x90
[ 7.382833] __jbd2_log_start_commit+0x8a/0xa0
[ 7.382835] jbd2_log_start_commit+0x24/0x40
[ 7.382837] __jbd2_journal_force_commit+0x91/0xb0
[ 7.382839] jbd2_journal_force_commit_nested+0x5/0x10
[ 7.382840] ext4_should_retry_alloc+0x5b/0xb0
[ 7.382842] ext4_da_write_begin+0xf2/0x2a0
[ 7.382845] generic_perform_write+0xa6/0x1c0
[ 7.382847] ext4_buffered_write_iter+0x89/0x100
[ 7.382850] ext4_file_write_iter+0x4a/0x7f0
[ 7.382853] new_sync_write+0x100/0x190
[ 7.382856] vfs_write+0x134/0x360
[ 7.382859] ksys_write+0x4d/0xc0
[ 7.382860] ? trace_hardirqs_on+0x38/0xe0
[ 7.382863] do_syscall_64+0x3a/0x90
[ 7.382865] entry_SYSCALL_64_after_hwframe+0x44/0xae
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