syzbot


WARNING in mark_buffer_dirty (7)

Status: upstream: reported C repro on 2025/05/10 17:11
Subsystems: hfs
[Documentation on labels]
Reported-by: syzbot+2327bccb02eef9291c1c@syzkaller.appspotmail.com
First crash: 10d, last: 3h36m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [hfs?] WARNING in mark_buffer_dirty (7) 0 (1) 2025/05/10 17:11
Similar bugs (13)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in mark_buffer_dirty bfs C error 10 866d 1212d 0/1 upstream: reported C repro on 2022/01/20 22:23
upstream WARNING in mark_buffer_dirty (6) fs C error 11669 10d 577d 28/28 fixed on 2025/05/06 15:33
upstream WARNING in mark_buffer_dirty (4) bfs nilfs C inconclusive 1152 708d 1047d 22/28 fixed on 2023/06/08 14:41
android-44 WARNING in mark_buffer_dirty 2 2326d 2224d 0/2 auto-closed as invalid on 2019/07/01 11:44
upstream WARNING in mark_buffer_dirty fs C 21 2356d 2738d 0/28 closed as invalid on 2019/07/24 04:22
linux-4.14 WARNING in mark_buffer_dirty (2) nilfs2 C error 8 808d 1191d 0/1 upstream: reported C repro on 2022/02/10 08:17
upstream WARNING in mark_buffer_dirty (2) ext4 665 1858d 1990d 0/28 auto-closed as invalid on 2020/07/14 01:44
upstream WARNING in mark_buffer_dirty (5) nilfs C done 172 585d 704d 23/28 fixed on 2023/10/12 12:48
upstream WARNING in mark_buffer_dirty (3) ext4 2 1539d 1552d 0/28 auto-closed as invalid on 2021/06/27 09:01
android-49 WARNING in mark_buffer_dirty 7 2172d 2224d 0/3 auto-closed as invalid on 2019/10/25 08:47
linux-4.14 WARNING in mark_buffer_dirty 1 1951d 1951d 0/1 auto-closed as invalid on 2020/05/11 07:45
linux-5.15 WARNING in mark_buffer_dirty origin:upstream C error 288 18d 793d 0/3 upstream: reported C repro on 2023/03/15 22:22
linux-6.1 WARNING in mark_buffer_dirty origin:upstream C error 350 50d 795d 0/3 upstream: reported C repro on 2023/03/13 14:09

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5313 at fs/buffer.c:1186 mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1186
Modules linked in:
CPU: 0 UID: 0 PID: 5313 Comm: syz-executor161 Not tainted 6.15.0-rc5-syzkaller-00032-g0d8d44db295c #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1186
Code: 4c 89 f7 e8 79 0d de ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 c4 34 fc ff e8 cf 18 7c ff eb 8c e8 c8 18 7c ff 90 <0f> 0b 90 e9 95 fd ff ff e8 ba 18 7c ff 90 0f 0b 90 e9 bf fd ff ff
RSP: 0018:ffffc9000d26fce0 EFLAGS: 00010293
RAX: ffffffff8243b788 RBX: ffff888047493ae0 RCX: ffff88801f494880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff11003bf1001 R08: ffff888047493ae7 R09: 1ffff11008e9275c
R10: dffffc0000000000 R11: ffffed1008e9275d R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff829851d0 R15: ffff88801df88780
FS:  00005555720f8480(0000) GS:ffff88808d6cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffedcb1fd28 CR3: 00000000432ad000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_put_super+0x49/0x60 fs/hfs/super.c:51
 generic_shutdown_super+0x132/0x2c0 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xb9/0x130 fs/super.c:473
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1435
 task_work_run+0x1d1/0x260 kernel/task_work.c:227
 resume_user_mode_work+0x5e/0x80 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x9a/0x120 kernel/entry/common.c:218
 do_syscall_64+0x103/0x210 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0854de79f7
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffedcb1ed38 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0854de79f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffedcb1edf0
RBP: 00007ffedcb1edf0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffedcb1fe60
R13: 00005555720f97c0 R14: 431bde82d7b634db R15: 00007ffedcb1fe80
 </TASK>

Crashes (29):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/06 21:50 upstream 0d8d44db295c 350f4ffc .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 21:08 upstream 0d8d44db295c 350f4ffc .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 20:16 upstream 0d8d44db295c 350f4ffc .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/17 01:42 upstream 3c21441eeffc f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in mark_buffer_dirty
2025/05/17 01:41 upstream 3c21441eeffc f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in mark_buffer_dirty
2025/05/16 23:27 upstream 3c21441eeffc cfde8269 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/09 13:46 upstream 9c69f8884904 3af71fd3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/09 06:09 upstream 2c89c1b655c0 bb813bcc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/09 04:32 upstream 2c89c1b655c0 bb813bcc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/09 03:22 upstream 2c89c1b655c0 bb813bcc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/09 02:15 upstream 2c89c1b655c0 bb813bcc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 21:25 upstream 2c89c1b655c0 bb813bcc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 16:43 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 13:42 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 11:46 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 10:20 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 06:36 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 02:12 upstream 707df3375124 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 02:02 upstream 707df3375124 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/08 01:46 upstream 707df3375124 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/07 20:55 upstream 707df3375124 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/07 18:42 upstream 707df3375124 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/07 11:57 upstream 0d8d44db295c 350f4ffc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/07 07:37 upstream 0d8d44db295c 350f4ffc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/07 04:58 upstream 0d8d44db295c 350f4ffc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 23:28 upstream 0d8d44db295c 350f4ffc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 21:36 upstream 0d8d44db295c 350f4ffc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 17:03 upstream 01f95500a162 350f4ffc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/16 13:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c919f08732cc cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in mark_buffer_dirty
* Struck through repros no longer work on HEAD.