syzbot


kernel BUG in clear_inode

Status: auto-obsoleted due to no activity on 2023/08/23 09:07
Reported-by: syzbot+5f80757c41c983a43f80@syzkaller.appspotmail.com
First crash: 367d, last: 367d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in clear_inode origin:upstream C 13 26d 342d 0/3 upstream: reported C repro on 2023/05/25 23:24
linux-5.15 kernel BUG in clear_inode (2) 1 1d01h 1d01h 0/3 upstream: reported on 2024/05/01 04:15
upstream kernel BUG at fs/inode.c:LINE! (2) btrfs ntfs3 C done unreliable 320 2d19h 1342d 0/26 upstream: reported C repro on 2020/08/28 13:18

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/inode.c:546!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3539 Comm: syz-executor.5 Not tainted 5.15.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:clear_inode+0x13f/0x150 fs/inode.c:546
Code: c7 06 60 00 00 00 5b 41 5c 41 5d 41 5e 41 5f c3 e8 36 49 a4 ff 0f 0b e8 2f 49 a4 ff 0f 0b e8 28 49 a4 ff 0f 0b e8 21 49 a4 ff <0f> 0b e8 1a 49 a4 ff 0f 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41
RSP: 0018:ffffc90002e1faf0 EFLAGS: 00010293
RAX: ffffffff81db955f RBX: 0000000000000040 RCX: ffff8880209c9d00
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000000
RBP: ffffc90002e1fc20 R08: ffffffff81db94f4 R09: fffffbfff1f78c52
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff1100515659b R14: ffff888028ab2cd8 R15: ffff888028ab2c00
FS:  00005555555b9400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30022000 CR3: 00000000489ab000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_evict_inode+0x9de/0xff0 fs/btrfs/inode.c:5726
 evict+0x2a4/0x620 fs/inode.c:587
 dispose_list fs/inode.c:620 [inline]
 evict_inodes+0x601/0x6a0 fs/inode.c:670
 generic_shutdown_super+0x99/0x2c0 fs/super.c:454
 kill_anon_super+0x37/0x60 fs/super.c:1067
 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2391
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f49f9a575d7
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffde0560628 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49f9a575d7
RDX: 00007ffde05606fb RSI: 000000000000000a RDI: 00007ffde05606f0
RBP: 00007ffde05606f0 R08: 00000000ffffffff R09: 00007ffde05604c0
R10: 00005555555ba893 R11: 0000000000000246 R12: 00007f49f9ab0cdc
R13: 00007ffde05617b0 R14: 00005555555ba810 R15: 00007ffde05617f0
 </TASK>
Modules linked in:
---[ end trace 46e7029b8bf4907d ]---
RIP: 0010:clear_inode+0x13f/0x150 fs/inode.c:546
Code: c7 06 60 00 00 00 5b 41 5c 41 5d 41 5e 41 5f c3 e8 36 49 a4 ff 0f 0b e8 2f 49 a4 ff 0f 0b e8 28 49 a4 ff 0f 0b e8 21 49 a4 ff <0f> 0b e8 1a 49 a4 ff 0f 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41
RSP: 0018:ffffc90002e1faf0 EFLAGS: 00010293
RAX: ffffffff81db955f RBX: 0000000000000040 RCX: ffff8880209c9d00
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000000
RBP: ffffc90002e1fc20 R08: ffffffff81db94f4 R09: fffffbfff1f78c52
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff1100515659b R14: ffff888028ab2cd8 R15: ffff888028ab2c00
FS:  00005555555b9400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc54ce4000 CR3: 00000000489ab000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/05/01 06:06 linux-5.15.y 8a7f2a5c5aa1 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in clear_inode
* Struck through repros no longer work on HEAD.