BUG: corrupted list in __dentry_kill (2)

Status: upstream: reported C repro on 2026/01/26 16:31
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+503ce1dbeb93ad221be6@syzkaller.appspotmail.com
First crash: 333d, last: 4h54m
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2026/01/26 android13-5.15-lts (ToT) fd7f3945989f C [report] BUG: corrupted list in __dentry_kill
2026/01/26 lts (merge base) 278455a82245 C Didn't crash
2026/01/26 upstream (ToT) fcb70a56f4d8 C Didn't crash
▶ ▼ Similar bugs (13)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: corrupted list in __dentry_kill fs 8 syz, C 35 3113d 3133d 5/29 fixed on 2018/05/08 18:30
android-54 BUG: corrupted list in __dentry_kill (2) 8 syz, C 11 537d 946d 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 syz, C 175 6h36m 270d 0/2 upstream: reported C repro on 2026/02/01 13:41
linux-4.19 BUG: corrupted list in __dentry_kill 8 1 2386d 2386d 0/1 auto-closed as invalid on 2020/08/15 07:34
android-5-15 BUG: corrupted list in __dentry_kill 8 1 668d 668d 0/2 auto-obsoleted due to no activity on 2025/03/30 08:49
android-5-10 BUG: corrupted list in __dentry_kill 8 syz, C inconclusive 657 4h03m 946d 0/2 upstream: reported C repro on 2024/03/27 10:55
upstream BUG: corrupted list in __dentry_kill (2) driver-core fs 8 syz, C done 4945 2513d 2513d 15/29 fixed on 2020/02/18 14:31
android-6-1 BUG: corrupted list in __dentry_kill (2) 8 2 556d 626d 0/2 auto-obsoleted due to no activity on 2025/07/20 02:58
android-54 BUG: corrupted list in __dentry_kill 8 1 1305d 1305d 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 811d 838d 0/2 auto-obsoleted due to no activity on 2024/11/07 13:03
android-5-10 KASAN: use-after-free Read in incfs_free_mount_info 19 1036 4h05m 283d 0/2 premoderation: reported on 2026/01/19 00:38
android-6-1 KASAN: use-after-free Read in incfs_free_mount_info 19 237 1d00h 283d 0/2 premoderation: reported on 2026/01/18 22:40
android-5-15 KASAN: use-after-free Read in incfs_free_mount_info 19 309 2d20h 277d 0/2 premoderation: reported on 2026/01/25 07:55

Sample crash report:
overlayfs: failed to create directory ./bus/work (errno: 17); mounting read-only
list_del corruption. prev->next should be ffff888111cbb2b0, but was ffff888111cbbd60
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3292 Comm: syz.2.972 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 f6 bd 56 02 0f 0b 48 c7 c7 40 a4 63 85 48 89 de e8 e5 bd 56 02 0f 0b 48 c7 c7 a0 a4 63 85 48 89 de e8 d4 bd 56 02 <0f> 0b 48 c7 c7 00 a5 63 85 48 89 de e8 c3 bd 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90001b6f9c0 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff888111cbb2b0 RCX: 92efc65946622200
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001b6f9e0 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7
R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111cbbd60 R15: ffff888111cd3e60
FS:  00007fa06038c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000120319000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:529 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:582
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x47/0x90 fs/dcache.c:893
 __fput+0x580/0x8b0 fs/file_table.c:319
 ____fput+0x15/0x20 fs/file_table.c:339
 task_work_run+0x127/0x190 kernel/task_work.c:188
 get_signal+0x13fb/0x1480 kernel/signal.c:2679
 arch_do_signal_or_restart+0xdf/0x11c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa06054a819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa06038c028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: 0000000000000000 RBX: 00007fa0607c4090 RCX: 00007fa06054a819
RDX: 0000200000000b80 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007fa0605e0c91 R08: 0000200000000a80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa0607c4128 R14: 00007fa0607c4090 R15: 00007ffc0e3c8928
 </TASK>
Modules linked in:
---[ end trace 85ebacb8f0c4ddd8 ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 f6 bd 56 02 0f 0b 48 c7 c7 40 a4 63 85 48 89 de e8 e5 bd 56 02 0f 0b 48 c7 c7 a0 a4 63 85 48 89 de e8 d4 bd 56 02 <0f> 0b 48 c7 c7 00 a5 63 85 48 89 de e8 c3 bd 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90001b6f9c0 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff888111cbb2b0 RCX: 92efc65946622200
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001b6f9e0 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7
R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111cbbd60 R15: ffff888111cd3e60
FS:  00007fa06038c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000120319000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (211):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/04/06 09:36 android13-5.15-lts 7fad219d720d 4440e7c2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/03/31 03:08 android13-5.15-lts 7fad219d720d d0af506e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/01/26 16:25 android13-5.15-lts 00b50d06692d a4c52dd6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/20 09:48 android13-5.15-lts 86eefba284ca 72cdc28d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/13 00:57 android13-5.15-lts d6c8aee048e0 745a967f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/08 02:00 android13-5.15-lts d6c8aee048e0 6520ecdb .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/05/18 14:17 android13-5.15-lts 05eea940894a 55156e84 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/04/21 15:08 android13-5.15-lts 68d122e51b06 3f2e655b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/04/06 15:09 android13-5.15-lts 7fad219d720d 4440e7c2 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/01/29 21:29 android13-5.15-lts 7e1070528954 aeb6fdd5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/29 15:03 android13-5.15-lts 2316d138a3c3 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/29 02:54 android13-5.15-lts 2316d138a3c3 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/29 00:37 android13-5.15-lts 2316d138a3c3 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/28 20:06 android13-5.15-lts 2316d138a3c3 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/28 01:14 android13-5.15-lts 2316d138a3c3 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/26 23:28 android13-5.15-lts dde14ee8fb2e 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/21 18:47 android13-5.15-lts 86eefba284ca 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/21 13:31 android13-5.15-lts 86eefba284ca 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/21 04:11 android13-5.15-lts 86eefba284ca df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/18 19:36 android13-5.15-lts ff23d765b06f 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/18 00:43 android13-5.15-lts ff23d765b06f 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/13 03:23 android13-5.15-lts d6c8aee048e0 745a967f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/12 13:01 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/12 09:02 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/11 18:53 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/11 17:19 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/11 10:19 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/10 17:00 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/10 11:04 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/10 02:18 android13-5.15-lts d6c8aee048e0 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/09 11:16 android13-5.15-lts d6c8aee048e0 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/09 10:01 android13-5.15-lts d6c8aee048e0 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/06 21:33 android13-5.15-lts f5eaed2bbe33 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/06 20:24 android13-5.15-lts f5eaed2bbe33 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/06 16:25 android13-5.15-lts f5eaed2bbe33 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/05 01:01 android13-5.15-lts f5eaed2bbe33 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/04 12:13 android13-5.15-lts f5eaed2bbe33 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/29 23:18 android13-5.15-lts f6f638556ea7 328436b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/27 19:01 android13-5.15-lts 776976664f31 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/27 07:04 android13-5.15-lts 776976664f31 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/27 04:39 android13-5.15-lts 776976664f31 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/25 10:43 android13-5.15-lts 5bfe2b8c1439 f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/25 09:08 android13-5.15-lts 5bfe2b8c1439 f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/23 18:34 android13-5.15-lts 5bfe2b8c1439 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/23 08:02 android13-5.15-lts 5bfe2b8c1439 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/21 20:25 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/20 20:51 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/20 06:21 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/20 02:36 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/16 22:00 android13-5.15-lts 5bfe2b8c1439 12a0a44a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/15 10:54 android13-5.15-lts 5bfe2b8c1439 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/09/14 11:04 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: corrupted list in __dentry_kill
2026/10/22 22:32 android13-5.15-lts c4cfc3ce1d26 b55fad29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KFENCE: use-after-free read in incfs_free_mount_info
* Struck through repros no longer work on HEAD.