syzbot


WARNING in udf_rename

Status: upstream: reported C repro on 2024/12/11 07:06
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+99bb36d7a3ea562b950e@syzkaller.appspotmail.com
First crash: 201d, last: 4d08h
Fix commit to backport (bisect log) :
tree: upstream
commit 6756af923e06aa33ad8894aaecbf9060953ba00f
Author: Jan Kara <jack@suse.cz>
Date: Tue Nov 26 11:55:12 2024 +0000

  udf: Verify inode link counts before performing rename

  
Bug presence (2)
Date Name Commit Repro Result
2024/12/11 linux-5.15.y (ToT) 0a51d2d4527b C [report] WARNING in udf_rename
2024/12/11 upstream (ToT) f92f4749861b C Didn't crash
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in udf_rename (2) udf C error 8 208d 215d 28/29 fixed on 2025/05/06 15:33
linux-6.1 WARNING in udf_rename origin:lts-only C done 52 4d16h 201d 0/3 upstream: reported C repro on 2024/12/11 06:39
upstream WARNING in udf_rename udf C error 3 920d 921d 0/29 auto-obsoleted due to no activity on 2023/04/22 05:39
Last patch testing requests (2)
Created Duration User Patch Repo Result
2025/04/05 07:30 13m retest repro linux-5.15.y report log
2025/02/19 19:00 9m retest repro linux-5.15.y report log
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/02/03 05:57 5h38m (2) fix candidate upstream OK (1) job log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4168 at fs/inode.c:332 drop_nlink+0xbb/0x100 fs/inode.c:332
Modules linked in:
CPU: 0 PID: 4168 Comm: syz-executor682 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:drop_nlink+0xbb/0x100 fs/inode.c:332
Code: 48 8b 1b 48 8d bb c8 07 00 00 be 08 00 00 00 e8 bb 12 ef ff f0 48 ff 83 c8 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 e8 f5 98 a9 ff <0f> 0b eb 88 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
RSP: 0018:ffffc900011df750 EFLAGS: 00010293
RAX: ffffffff81ce292b RBX: ffff888070110e28 RCX: ffff888079e6bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888079e6bb80 R09: 0000000000000002
R10: 000000003b9aca00 R11: 0000000000000000 R12: 1ffff1100e0221ce
R13: dffffc0000000000 R14: ffff888070110e70 R15: dffffc0000000000
FS:  0000555584ef1380(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8dc84a1000 CR3: 000000007d181000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_dec_link_count include/linux/fs.h:2503 [inline]
 udf_rename+0x8f6/0xb20 fs/udf/namei.c:850
 vfs_rename+0xbbf/0x10d0 fs/namei.c:4832
 do_renameat2+0xa83/0xf70 fs/namei.c:4985
 __do_sys_rename fs/namei.c:5031 [inline]
 __se_sys_rename fs/namei.c:5029 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5029
 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: 0033:0x7f162342e9f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffcbe42c98 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f162342e9f9
RDX: 00007f162342e9f9 RSI: 0000200000000040 RDI: 0000200000000000
RBP: 0031656c69662f2e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000000c0
R13: 0030656c69662f30 R14: 2f30656c69662f2e R15: 0000000000000001
 </TASK>

Crashes (41):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/25 23:35 linux-5.15.y 1c700860e8bc 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in udf_rename
2024/12/11 07:31 linux-5.15.y 0a51d2d4527b cfc402b4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/08 04:10 linux-5.15.y c16c81c81336 7e3bd60d .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in udf_rename
2025/06/25 23:08 linux-5.15.y 1c700860e8bc 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/25 23:07 linux-5.15.y 1c700860e8bc 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/16 23:59 linux-5.15.y 1c700860e8bc d1716036 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/16 23:58 linux-5.15.y 1c700860e8bc d1716036 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/10 12:42 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/10 12:40 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/05 06:55 linux-5.15.y 1c700860e8bc 6b6b5f21 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/05 06:55 linux-5.15.y 1c700860e8bc 6b6b5f21 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/04 09:13 linux-5.15.y 98f47d0e9b8c a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/06/04 09:13 linux-5.15.y 98f47d0e9b8c a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/05/28 12:32 linux-5.15.y 98f47d0e9b8c 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/05/28 12:32 linux-5.15.y 98f47d0e9b8c 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/05/21 18:50 linux-5.15.y a68c15152131 dc5d3808 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/05/07 16:33 linux-5.15.y 16fdf2c7111b 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/05/07 16:33 linux-5.15.y 16fdf2c7111b 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/04/24 02:25 linux-5.15.y f7347f400572 73a168d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/04/24 02:24 linux-5.15.y f7347f400572 73a168d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/04/24 02:21 linux-5.15.y f7347f400572 73a168d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/04/17 01:52 linux-5.15.y f7347f400572 a95239b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/04/13 09:54 linux-5.15.y f7347f400572 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/21 18:39 linux-5.15.y 0c935c049b5c 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/15 22:14 linux-5.15.y 0c935c049b5c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/15 22:14 linux-5.15.y 0c935c049b5c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/10 09:59 linux-5.15.y c16c81c81336 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/10 09:58 linux-5.15.y c16c81c81336 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/06 15:15 linux-5.15.y c16c81c81336 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/03/06 15:15 linux-5.15.y c16c81c81336 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/02/26 12:07 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/02/21 01:05 linux-5.15.y c16c81c81336 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/02/21 01:04 linux-5.15.y c16c81c81336 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/01/06 16:35 linux-5.15.y 91786f140358 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2025/01/06 16:35 linux-5.15.y 91786f140358 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2024/12/13 05:53 linux-5.15.y 0a51d2d4527b 530e80f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2024/12/13 00:10 linux-5.15.y 0a51d2d4527b 530e80f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2024/12/13 00:10 linux-5.15.y 0a51d2d4527b 530e80f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2024/12/13 00:08 linux-5.15.y 0a51d2d4527b 530e80f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2024/12/11 07:06 linux-5.15.y 0a51d2d4527b cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
2024/12/11 07:06 linux-5.15.y 0a51d2d4527b cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in udf_rename
* Struck through repros no longer work on HEAD.