syzbot


WARNING in lookup_slow

Status: auto-obsoleted due to no activity on 2024/05/02 19:30
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+7923cf13ed6110fc744d@syzkaller.appspotmail.com
First crash: 527d, last: 124d
Cause bisection: failed (error log, bisect log)
  
Fix bisection: the issue occurs on the latest tested release (bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [vfs?] [ntfs3?] [tmpfs?] WARNING in lookup_slow 0 (1) 2022/12/19 10:37
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in lookup_slow (2) 1 207d 207d 0/3 auto-obsoleted due to no activity on 2024/02/09 08:58
upstream WARNING in lookup_slow (2) fs 4 5d12h 13d 0/26 moderation: reported on 2024/05/13 10:15
linux-6.1 WARNING in lookup_slow origin:upstream missing-backport C inconclusive 4 49d 176d 0/3 upstream: reported C repro on 2023/12/02 22:03
linux-5.15 WARNING in lookup_slow (3) 3 7d02h 57d 0/3 upstream: reported on 2024/03/30 12:27
linux-5.15 WARNING in lookup_slow 1 367d 367d 0/3 auto-obsoleted due to no activity on 2023/09/02 18:27
Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/04/24 07:14 26m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2024/04/24 07:14 26m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2024/02/20 10:50 19m retest repro upstream OK log
2024/02/07 17:09 25m retest repro upstream OK log
2024/01/23 18:47 23m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/01/23 18:47 19m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/01/10 20:02 18m retest repro upstream OK log
2024/01/10 20:02 19m retest repro upstream OK log
2023/12/12 10:27 19m retest repro upstream report log
2023/11/28 08:54 1h21m retest repro upstream report log
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/06/28 19:09 44m bisect fix upstream job log (0)
2023/05/28 13:20 48m bisect fix upstream job log (0) log

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x1, magic = 0xffff888074d7ccf0, owner = 0xffff8880768c5940, curr 0xffff8880768c3b80, list empty
WARNING: CPU: 0 PID: 5422 at kernel/locking/rwsem.c:1343 __up_read+0x602/0x690 kernel/locking/rwsem.c:1343
Modules linked in:
CPU: 0 PID: 5422 Comm: syz-executor305 Not tainted 6.4.0-syzkaller-12316-g4f6b6c2b2f86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:__up_read+0x602/0x690 kernel/locking/rwsem.c:1343
Code: 0a 8b 48 0f 44 c1 48 c7 c7 80 84 0a 8b 48 c7 c6 20 85 0a 8b 4c 89 fa 4c 89 f1 49 89 d8 4d 89 e9 50 e8 c2 60 e8 ff 48 83 c4 08 <0f> 0b 48 bb 00 00 00 00 00 fc ff df 4c 8b 2c 24 e9 4e fb ff ff 48
RSP: 0018:ffffc900045b7a80 EFLAGS: 00010292
RAX: 792fb47aa3b3aa00 RBX: ffff8880768c5940 RCX: ffff8880768c3b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900045b7b38 R08: ffffffff815321f2 R09: 1ffff920008b6ec8
R10: dffffc0000000000 R11: fffff520008b6ec9 R12: ffff888074d7cd48
R13: ffff8880768c3b80 R14: ffff888074d7ccf0 R15: 0000000000000001
FS:  00007f5db83ee700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5db83ee000 CR3: 0000000020052000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock_shared include/linux/fs.h:786 [inline]
 lookup_slow+0x5e/0x70 fs/namei.c:1708
 walk_component+0x2d0/0x400 fs/namei.c:1998
 lookup_last fs/namei.c:2455 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2479
 filename_lookup+0x255/0x610 fs/namei.c:2508
 user_path_at_empty+0x44/0x180 fs/namei.c:2907
 user_path_at include/linux/namei.h:57 [inline]
 __do_sys_chdir fs/open.c:551 [inline]
 __se_sys_chdir+0xbf/0x220 fs/open.c:545
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5ec4663b59
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 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:00007f5db83ee1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 0000000000000020 RCX: 00007f5ec4663b59
RDX: 00007f5ec4663b59 RSI: ffffffffffffffb8 RDI: 0000000020000380
RBP: 00007f5ec4707790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ec470779c
R13: 00007fff10c32fdf R14: 00007f5db83ee300 R15: 0000000000022000
 </TASK>

Crashes (34):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/08 11:45 upstream 4f6b6c2b2f86 668cb1fa .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in lookup_slow
2023/01/07 04:43 upstream 1f5abbd77e2c 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in lookup_slow
2023/01/02 01:00 upstream e4cf7c25bae5 ab32d508 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-upstream-fs WARNING in lookup_slow
2022/12/17 00:00 upstream 84e57d292203 05494336 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in lookup_slow
2022/12/21 03:50 upstream 6feb57c2fd7c d3e76707 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in lookup_slow
2023/01/07 05:31 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ae87308093bc 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in lookup_slow
2022/12/17 02:17 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a5541c0811a0 05494336 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in lookup_slow
2023/12/27 18:08 upstream fbafc3e621c3 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/07/28 21:32 upstream f837f0a3c948 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/04/23 06:41 upstream 2caeeb9d4a1b 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/04/23 04:37 upstream 2caeeb9d4a1b 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/04/11 11:03 upstream 0d3eb744aed4 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/04/06 14:35 upstream 99ddf2254feb 08707520 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/03/31 14:36 upstream 62bad54b26db f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/03/18 18:39 upstream 478a351ce0d6 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/03/05 22:58 upstream f915322fe014 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/27 07:23 upstream f3a2439f20d9 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/25 08:35 upstream 8cbd92339db0 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/21 02:48 upstream 91bc559d8d3a 2414209c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/20 07:28 upstream c9c3395d5e3d bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/17 07:39 upstream 3ac88fa4605e 851bc19a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/16 16:11 upstream 033c40a89f55 38b317a7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/10 10:58 upstream 38c1e0c65865 07980f9d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/02/09 17:48 upstream 0983f6bf2bfc 07980f9d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in lookup_slow
2023/02/08 04:05 upstream 513c1a3d3f19 15c3d445 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/01/31 22:16 upstream 22b8077d0fce b68fb8d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/01/11 16:49 upstream 7dd4b804e080 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/01/10 04:03 upstream 1fe4fd6f5cad 48bc529a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/01/09 07:25 upstream 1fe4fd6f5cad 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2023/01/05 07:02 upstream 512dee0c00ad 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2022/12/22 06:21 upstream b6bb9676f216 4067838e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2022/12/20 09:49 upstream aeba12b26c79 c52b2efb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2022/12/19 15:38 upstream f9ff5644bcc0 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
2022/12/16 23:44 upstream 84e57d292203 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_slow
* Struck through repros no longer work on HEAD.