syzbot


kernel BUG in may_delete

Status: upstream: reported C repro on 2024/04/03 23:06
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+6807813924e95a9e0a09@syzkaller.appspotmail.com
First crash: 567d, last: 3d10h
Bug presence (3)
Date Name Commit Repro Result
2024/04/04 android13-5.15-lts (ToT) 993bed180178 C [report] kernel BUG in may_delete
2024/04/04 lts (merge base) 6139f2a02fe0 C Didn't crash
2024/04/04 upstream (ToT) c85af715cac0 C Didn't crash
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 kernel BUG in may_delete -1 C 839 151d 567d 0/2 upstream: reported C repro on 2024/04/03 23:36
android-6-1 kernel BUG in may_delete origin:downstream -1 C 3042 3d10h 567d 0/2 upstream: reported C repro on 2024/04/03 23:51
android-5-10 kernel BUG in may_delete -1 C 6445 2d04h 567d 0/2 upstream: reported C repro on 2024/04/04 00:03
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/06/21 00:45 6m retest repro android13-5.15-lts report log

Sample crash report:
EXT4-fs (loop0): 1 orphan inode deleted
EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodiscard,noquota,jqfmt=vfsv0,noblock_validity,resgid=0x0000000000000000,sysvgroups,usrquota,usrquota,. Quota mode: writeback.
ext4 filesystem being mounted at /file1 supports timestamps until 2038-01-19 (0x7fffffff)
------------[ cut here ]------------
kernel BUG at fs/namei.c:2933!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 282 Comm: syz-executor255 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2933
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 d0 4e f5 ff e9 77 fe ff ff e8 16 d0 b6 ff 0f 0b e8 0f d0 b6 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53
RSP: 0018:ffffc90000987b10 EFLAGS: 00010293
RAX: ffffffff81b1ef01 RBX: ffff8881119fd880 RCX: ffff88811bdebb40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000987b78 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000130f44 R11: 1ffff92000130f44 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888120590e00 R15: 1ffff1102233fb10
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f20be2af130 CR3: 000000000660f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vfs_rmdir+0x32/0x460 fs/namei.c:4130
 incfs_kill_sb+0x105/0x220 fs/incfs/vfs.c:1989
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x446/0x500 fs/namespace.c:1139
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1146
 task_work_run+0x127/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa7e/0x27a0 kernel/exit.c:889
 do_group_exit+0x141/0x310 kernel/exit.c:1003
 __do_sys_exit_group kernel/exit.c:1014 [inline]
 __se_sys_exit_group kernel/exit.c:1012 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1012
 x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f20be234f89
Code: Unable to access opcode bytes at RIP 0x7f20be234f5f.
RSP: 002b:00007ffdcc25a788 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f20be234f89
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f20be2b1370 R08: ffffffffffffffb8 R09: 0000000000000006
R10: 0000000000000147 R11: 0000000000000246 R12: 00007f20be2b1370
R13: 0000000000000000 R14: 00007f20be2b20e0 R15: 00007f20be203250
 </TASK>
Modules linked in:
---[ end trace 3ddb068aa8f4df49 ]---
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2933
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 d0 4e f5 ff e9 77 fe ff ff e8 16 d0 b6 ff 0f 0b e8 0f d0 b6 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53
RSP: 0018:ffffc90000987b10 EFLAGS: 00010293
RAX: ffffffff81b1ef01 RBX: ffff8881119fd880 RCX: ffff88811bdebb40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000987b78 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000130f44 R11: 1ffff92000130f44 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888120590e00 R15: 1ffff1102233fb10
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f20be2af130 CR3: 000000000660f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2690):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/11 07:12 android13-5.15-lts bce84c40a40b ff1712fe .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 kernel BUG in may_delete
2025/10/01 09:57 android13-5.15-lts 2bbc293701f8 65a0eece .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-android-5-15 kernel BUG in may_delete
2025/08/09 18:51 android13-5.15-lts f32b52534f1d 32a0e5ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 kernel BUG in may_delete
2025/07/15 00:27 android13-5.15-lts eabc268e4fb2 d8fc7335 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 kernel BUG in may_delete
2025/05/23 03:43 android13-5.15-lts 56993594bfa4 fa44301a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 kernel BUG in may_delete
2025/05/21 19:29 android13-5.15-lts 56993594bfa4 dc5d3808 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 kernel BUG in may_delete
2025/04/01 13:36 android13-5.15-lts 5e1b899f19c3 36d76a97 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 kernel BUG in may_delete
2024/12/22 05:58 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/22 05:28 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/22 02:38 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/22 01:38 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/22 00:18 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/21 19:37 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/21 18:19 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/21 17:04 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/21 12:28 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/21 06:28 android13-5.15-lts b4bd207b0380 d7f584ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/20 21:48 android13-5.15-lts b4bd207b0380 0f61b415 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/20 18:42 android13-5.15-lts b4bd207b0380 0f61b415 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/12/20 17:12 android13-5.15-lts b4bd207b0380 0f61b415 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/10/23 07:33 android13-5.15-lts 5e4635681cf1 15fa2979 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/07/13 21:14 android13-5.15-lts db06c48ab67e eaeb5c15 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2024/04/03 23:03 android13-5.15-lts 993bed180178 51c4dcff .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-15 kernel BUG in may_delete
2025/10/20 06:08 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/20 02:04 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/18 19:55 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/18 15:14 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/18 15:06 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/18 14:56 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/18 14:46 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/18 14:40 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/18 14:36 android13-5.15-lts bce84c40a40b 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/15 10:18 android13-5.15-lts bce84c40a40b b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/12 20:13 android13-5.15-lts bce84c40a40b ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/12 13:24 android13-5.15-lts bce84c40a40b ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/12 04:17 android13-5.15-lts bce84c40a40b ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/12 02:39 android13-5.15-lts bce84c40a40b ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/11 20:18 android13-5.15-lts bce84c40a40b ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/06 07:25 android13-5.15-lts 2bbc293701f8 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/06 05:39 android13-5.15-lts 2bbc293701f8 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/05 07:44 android13-5.15-lts 2bbc293701f8 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/04 05:03 android13-5.15-lts 2bbc293701f8 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/10/03 08:53 android13-5.15-lts 2bbc293701f8 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/29 08:20 android13-5.15-lts 8d934e0056f7 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/28 21:56 android13-5.15-lts 8d934e0056f7 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/26 12:40 android13-5.15-lts 8d934e0056f7 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/26 08:51 android13-5.15-lts 8d934e0056f7 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/25 23:36 android13-5.15-lts 8d934e0056f7 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/25 22:21 android13-5.15-lts 8d934e0056f7 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/25 20:36 android13-5.15-lts 8d934e0056f7 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/25 14:26 android13-5.15-lts 8d934e0056f7 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/22 05:05 android13-5.15-lts 8d934e0056f7 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/19 08:49 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/19 02:00 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/19 00:44 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/18 19:59 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/16 16:40 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/16 04:17 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/15 13:07 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/14 23:45 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/14 20:04 android13-5.15-lts 8d934e0056f7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/06 00:39 android13-5.15-lts da3dbfdd15be d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/02 00:28 android13-5.15-lts da3dbfdd15be 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/01 15:35 android13-5.15-lts f32b52534f1d 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/01 11:07 android13-5.15-lts f32b52534f1d 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/01 05:32 android13-5.15-lts f32b52534f1d 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/01 03:58 android13-5.15-lts f32b52534f1d 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2025/09/01 01:49 android13-5.15-lts f32b52534f1d 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/04/03 22:37 android13-5.15-lts 993bed180178 51c4dcff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
* Struck through repros no longer work on HEAD.