syzbot


BUG: corrupted list in __dentry_kill

Status: upstream: reported C repro on 2024/03/27 10:55
Reported-by: syzbot+b64ce08e31a10a8d28c6@syzkaller.appspotmail.com
First crash: 766d, last: 9h13m
Fix bisection: the issue occurs on the latest tested release (bisect log)
  
Similar bugs (10)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 BUG: corrupted list in __dentry_kill (2) origin:downstream 8 C 74 12h07m 96d 0/2 upstream: reported C repro on 2026/01/26 16:31
upstream BUG: corrupted list in __dentry_kill fs 8 C 35 2934d 2954d 5/29 fixed on 2018/05/08 18:30
android-54 BUG: corrupted list in __dentry_kill (2) 8 C 11 357d 766d 0/2 upstream: reported C repro on 2024/03/27 11:32
android-6-1 BUG: corrupted list in __dentry_kill (3) origin:downstream 8 C 50 6d15h 90d 0/2 upstream: reported C repro on 2026/02/01 13:41
linux-4.19 BUG: corrupted list in __dentry_kill 8 1 2207d 2207d 0/1 auto-closed as invalid on 2020/08/15 07:34
android-5-15 BUG: corrupted list in __dentry_kill 8 1 489d 489d 0/2 auto-obsoleted due to no activity on 2025/03/30 08:49
upstream BUG: corrupted list in __dentry_kill (2) fs 8 C done 4945 2334d 2334d 15/29 fixed on 2020/02/18 14:31
android-6-1 BUG: corrupted list in __dentry_kill (2) 8 2 377d 447d 0/2 auto-obsoleted due to no activity on 2025/07/20 02:58
android-54 BUG: corrupted list in __dentry_kill 8 1 1125d 1125d 0/2 auto-obsoleted due to no activity on 2023/08/01 17:00
android-6-1 BUG: corrupted list in __dentry_kill 8 2 631d 659d 0/2 auto-obsoleted due to no activity on 2024/11/07 13:03
Last patch testing requests (6)
Created Duration User Patch Repo Result
2025/07/15 05:42 11m retest repro android13-5.10-lts report log
2025/04/27 16:45 7m retest repro android13-5.10-lts report log
2025/01/26 10:52 5m retest repro android13-5.10-lts report log
2024/10/15 03:35 0m retest repro android13-5.10-lts error
2024/08/04 21:20 10m retest repro android13-5.10-lts report log
2024/04/10 19:53 5m retest repro android13-5.10-lts report log

Sample crash report:
overlayfs: failed to create directory ./bus/work (errno: 17); mounting read-only
list_del corruption. prev->next should be ffff8881264d76f0, but was ffff88811acc53d0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3994 Comm: syz.5.1209 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 a6 2f 32 02 0f 0b 48 c7 c7 a0 32 20 85 48 89 de e8 95 2f 32 02 0f 0b 48 c7 c7 00 33 20 85 48 89 de e8 84 2f 32 02 <0f> 0b 48 c7 c7 60 33 20 85 48 89 de e8 73 2f 32 02 0f 0b 00 55 48
RSP: 0018:ffffc90001d17d20 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881264d76f0 RCX: dc18c9e420362f00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001d17d40 R08: dffffc0000000000 R09: ffffed103ee2a5f8
R10: ffffed103ee2a5f8 R11: 1ffff1103ee2a5f7 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88811acc53d0 R15: ffff8881265eee60
FS:  00007f5f443306c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff319f8988 CR3: 00000001207f8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:526 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:579
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 __fput+0x4fe/0x770 fs/file_table.c:294
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f5f444c0749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5f44330038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: 0000000000000000 RBX: 00007f5f44716fa0 RCX: 00007f5f444c0749
RDX: 0000200000000b80 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f5f44544f91 R08: 0000200000000a80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5f44717038 R14: 00007f5f44716fa0 R15: 00007fff75f4b3c8
Modules linked in:
---[ end trace 0e6e1e1342d4e3a4 ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 a6 2f 32 02 0f 0b 48 c7 c7 a0 32 20 85 48 89 de e8 95 2f 32 02 0f 0b 48 c7 c7 00 33 20 85 48 89 de e8 84 2f 32 02 <0f> 0b 48 c7 c7 60 33 20 85 48 89 de e8 73 2f 32 02 0f 0b 00 55 48
RSP: 0018:ffffc90001d17d20 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881264d76f0 RCX: dc18c9e420362f00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001d17d40 R08: dffffc0000000000 R09: ffffed103ee2a5f8
R10: ffffed103ee2a5f8 R11: 1ffff1103ee2a5f7 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88811acc53d0 R15: ffff8881265eee60
FS:  00007f5f443306c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff319f8988 CR3: 00000001207f8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (378):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/16 18:36 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2025/12/16 11:34 android13-5.10-lts 9286af17ed5f d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2025/09/24 17:07 android13-5.10-lts 911f602c2237 0abd0691 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2025/09/24 15:22 android13-5.10-lts 911f602c2237 0abd0691 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2025/09/24 14:35 android13-5.10-lts 911f602c2237 0abd0691 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2025/08/29 06:13 android13-5.10-lts 1154f779f3f3 d401b9d7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2024/03/27 10:50 android13-5.10-lts e7daca75b4c3 454571b6 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/02/06 19:28 android13-5.10-lts 58c592510fcd 97745f52 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/01/02 02:09 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/05/03 01:07 android13-5.10-lts 7ae299a5827a a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/05/02 20:30 android13-5.10-lts 7ae299a5827a a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/05/02 05:33 android13-5.10-lts 7ae299a5827a 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/05/02 02:22 android13-5.10-lts 7ae299a5827a 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/05/02 01:19 android13-5.10-lts 7ae299a5827a 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/05/01 21:14 android13-5.10-lts 7ae299a5827a 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/05/01 08:09 android13-5.10-lts 7ae299a5827a 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/29 21:17 android13-5.10-lts 7ae299a5827a 005438fc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/28 04:34 android13-5.10-lts d8c55bf860fd ce741359 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/28 02:53 android13-5.10-lts d8c55bf860fd ce741359 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/27 20:00 android13-5.10-lts d8c55bf860fd 0f700595 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/27 06:42 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/27 05:38 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/27 03:26 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/26 17:16 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/26 14:39 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/26 04:41 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/25 23:59 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/25 16:39 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/25 10:53 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/25 09:29 android13-5.10-lts d8c55bf860fd 9c2d0995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/24 09:16 android13-5.10-lts d8c55bf860fd 9cfb3ca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/24 04:49 android13-5.10-lts d8c55bf860fd 9cfb3ca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/24 03:39 android13-5.10-lts d8c55bf860fd 9cfb3ca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/23 07:12 android13-5.10-lts d8c55bf860fd b10da5ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/21 00:51 android13-5.10-lts cc0ae2abdc73 e65da4ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/20 22:35 android13-5.10-lts cc0ae2abdc73 e65da4ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/20 05:00 android13-5.10-lts cc0ae2abdc73 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/19 23:49 android13-5.10-lts cc0ae2abdc73 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/19 22:37 android13-5.10-lts cc0ae2abdc73 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/19 17:20 android13-5.10-lts cc0ae2abdc73 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/18 19:07 android13-5.10-lts cc0ae2abdc73 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/18 00:34 android13-5.10-lts cc0ae2abdc73 24ecfc1e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/17 09:53 android13-5.10-lts cc0ae2abdc73 de0a551d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/17 04:03 android13-5.10-lts cc0ae2abdc73 de0a551d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/16 08:33 android13-5.10-lts cc0ae2abdc73 df15c5f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/16 01:50 android13-5.10-lts cc0ae2abdc73 df15c5f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/15 08:50 android13-5.10-lts cc0ae2abdc73 e2e976a8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/13 09:20 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/13 00:30 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/12 09:39 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/12 08:15 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/11 11:37 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/11 07:06 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/11 01:52 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/10 20:56 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/10 02:56 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/09 09:25 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/08 02:41 android13-5.10-lts cc0ae2abdc73 2c961e87 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/06 23:44 android13-5.10-lts cc0ae2abdc73 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/06 16:27 android13-5.10-lts cc0ae2abdc73 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/06 06:17 android13-5.10-lts cc0ae2abdc73 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/05 23:15 android13-5.10-lts cc0ae2abdc73 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/04/04 06:59 android13-5.10-lts cc0ae2abdc73 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/03/31 04:50 android13-5.10-lts cc0ae2abdc73 d0af506e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2026/03/30 04:38 android13-5.10-lts cc0ae2abdc73 b5ceaad2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
2024/03/27 10:29 android13-5.10-lts e7daca75b4c3 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in __dentry_kill
* Struck through repros no longer work on HEAD.