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: 109d, last: 8d10h
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 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 kernel BUG in may_delete C 34 5h36m 109d 0/2 upstream: reported C repro on 2024/04/03 23:36
android-6-1 kernel BUG in may_delete origin:downstream C 392 4d20h 109d 0/2 upstream: reported C repro on 2024/04/03 23:51
android-5-10 kernel BUG in may_delete C 189 1d12h 109d 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:
------------[ cut here ]------------
kernel BUG at fs/namei.c:2933!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 293 Comm: syz-executor471 Not tainted 5.15.151-syzkaller-00415-gdb06c48ab67e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:may_delete+0x6eb/0x6f0 fs/namei.c:2933
Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 46 74 f4 ff e9 72 fe ff ff e8 ac 3a b2 ff 0f 0b e8 a5 3a b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 3a b2 ff 4c 8d
RSP: 0018:ffffc90000987bb0 EFLAGS: 00010293
RAX: ffffffff81bdfd1b RBX: ffff88811cdcdcf0 RCX: ffff888121fc3b40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000987c18 R08: ffffffff81bdf6af R09: 0000000000000003
R10: fffff52000130f58 R11: dffffc0000000001 R12: ffff88811cdcddd0
R13: 1ffff110239b9bba R14: ffff88810f26ded8 R15: dffffc0000000000
FS:  000055555743e380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b590cc90a8 CR3: 0000000121d51000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vfs_rmdir+0x32/0x470 fs/namei.c:4130
 incfs_kill_sb+0x113/0x230 fs/incfs/vfs.c:1961
 deactivate_locked_super+0xad/0x110 fs/super.c:335
 deactivate_super+0xbe/0xf0 fs/super.c:366
 cleanup_mnt+0x45c/0x510 fs/namespace.c:1143
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150
 task_work_run+0x129/0x190 kernel/task_work.c:164
 ptrace_notify+0x29e/0x350 kernel/signal.c:2388
 ptrace_report_syscall include/linux/tracehook.h:66 [inline]
 tracehook_report_syscall_exit include/linux/tracehook.h:130 [inline]
 arch_syscall_exit_tracehook include/linux/entry-common.h:297 [inline]
 syscall_exit_work kernel/entry/common.c:256 [inline]
 syscall_exit_to_user_mode_prepare kernel/entry/common.c:283 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:288 [inline]
 syscall_exit_to_user_mode+0xac/0x160 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f6468db34c7
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:00007ffc11e45cb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6468db34c7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc11e45d70
RBP: 00007ffc11e45d70 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc11e46e60
R13: 0000555557447700 R14: 431bde82d7b634db R15: 00007ffc11e47ef0
 </TASK>
Modules linked in:
---[ end trace 673b799cedb73032 ]---
RIP: 0010:may_delete+0x6eb/0x6f0 fs/namei.c:2933
Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 46 74 f4 ff e9 72 fe ff ff e8 ac 3a b2 ff 0f 0b e8 a5 3a b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 3a b2 ff 4c 8d
RSP: 0018:ffffc90000987bb0 EFLAGS: 00010293
RAX: ffffffff81bdfd1b RBX: ffff88811cdcdcf0 RCX: ffff888121fc3b40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000987c18 R08: ffffffff81bdf6af R09: 0000000000000003
R10: fffff52000130f58 R11: dffffc0000000001 R12: ffff88811cdcddd0
R13: 1ffff110239b9bba R14: ffff88810f26ded8 R15: dffffc0000000000
FS:  000055555743e380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b590cc90a8 CR3: 0000000121d51000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (143):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2024/07/14 06:37 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/07/13 20:32 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/07/09 10:57 android13-5.15-lts db06c48ab67e bc23a442 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/07/01 00:19 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 20:25 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 17:23 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 16:04 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 14:44 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 13:35 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 12:21 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 11:15 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 05:51 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/30 04:17 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/29 18:52 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/26 02:06 android13-5.15-lts 9044d25b8ff5 dec8bc94 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/26 02:03 android13-5.15-lts 9044d25b8ff5 dec8bc94 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 16:26 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 16:12 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 16:00 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:24 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:23 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:22 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:21 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:20 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:19 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:19 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:18 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:17 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:17 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:16 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:16 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:15 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:14 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:14 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:14 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:12 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:12 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:11 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:10 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:10 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:09 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:09 android13-5.15-lts 9044d25b8ff5 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 kernel BUG in may_delete
2024/06/24 15:08 android13-5.15-lts 9044d25b8ff5 edc5149a .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.