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WARNING in do_mkdirat

Status: upstream: reported C repro on 2022/12/03 14:52
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+919c5a9be8433b8bf201@syzkaller.appspotmail.com
First crash: 1161d, last: 1d13h
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly fs report (Feb 2024) 0 (1) 2024/02/12 21:31
Re: [syzbot] WARNING in do_mkdirat 20 (20) 2023/01/03 13:36
[syzbot] WARNING in do_mkdirat 2 (5) 2022/12/10 18:06
▶ ▼ Similar bugs (7)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in do_mkdirat (3) -1 16 286d 354d 0/3 auto-obsoleted due to no activity on 2025/07/02 00:38
linux-6.1 WARNING in do_mkdirat -1 7 805d 1030d 0/3 auto-obsoleted due to no activity on 2024/02/28 16:21
linux-6.1 WARNING in do_mkdirat (2) -1 60 425d 678d 0/3 auto-obsoleted due to no activity on 2025/02/12 20:24
linux-6.1 WARNING in do_mkdirat (4) -1 19 6d16h 162d 0/3 upstream: reported on 2025/08/24 17:03
linux-6.6 WARNING in do_mkdirat -1 1 133d 133d 0/2 auto-obsoleted due to no activity on 2025/12/31 18:38
linux-6.6 WARNING in do_mkdirat (2) -1 6 11d 24d 0/2 upstream: reported on 2026/01/09 11:46
linux-5.15 WARNING in do_mkdirat origin:lts-only -1 C inconclusive 22 27d 943d 0/3 upstream: reported C repro on 2023/07/05 09:42
▶ ▼ Last patch testing requests (13)
Created Duration User Patch Repo Result
2024/10/10 18:59 15m retest repro upstream report log
2024/04/03 09:11 20m retest repro upstream OK log
2024/03/06 16:30 24m retest repro upstream report log
2024/03/06 15:49 27m retest repro upstream OK log
2024/01/06 21:49 20m retest repro upstream OK log
2023/12/14 21:30 2h41m retest repro linux-next OK log
2023/11/24 15:04 21m retest repro upstream report log
2023/11/24 15:04 31m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2023/11/24 13:53 17m retest repro upstream OK log
2023/09/04 15:44 25m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2022/12/15 23:51 23m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log
2022/12/11 00:29 20m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 3ecc37918c80 report log
2022/12/10 01:14 24m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 0d1409e4ff08 report log

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888077a5f318, owner = 0x0, curr 0xffff888015e8d940, list empty
WARNING: CPU: 1 PID: 5438 at kernel/locking/rwsem.c:1369 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 1 PID: 5438 at kernel/locking/rwsem.c:1369 up_write+0x460/0x510 kernel/locking/rwsem.c:1632
Modules linked in:
CPU: 1 PID: 5438 Comm: syz-executor192 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline]
RIP: 0010:up_write+0x460/0x510 kernel/locking/rwsem.c:1632
Code: ea 03 80 3c 02 00 75 53 48 8b 13 4d 89 f1 41 55 4d 89 f8 4c 89 e1 48 c7 c6 00 96 cc 8a 48 c7 c7 20 95 cc 8a e8 51 e3 e6 ff 90 <0f> 0b 90 90 5a e9 a0 fc ff ff 48 89 ef e8 be f5 77 00 e9 0d fd ff
RSP: 0018:ffffc90003edfe08 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff888077a5f318 RCX: ffffffff814cf119
RDX: ffff888015e8d940 RSI: ffffffff814cf126 RDI: 0000000000000001
RBP: ffff888077a5f320 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888077a5f318
R13: ffffffff8acc9460 R14: ffff888015e8d940 R15: 0000000000000000
FS:  00007f28c7db36c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffd0a33db8 CR3: 0000000023652000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:807 [inline]
 done_path_create fs/namei.c:3942 [inline]
 do_mkdirat+0x1ca/0x3a0 fs/namei.c:4148
 __do_sys_mkdir fs/namei.c:4165 [inline]
 __se_sys_mkdir fs/namei.c:4163 [inline]
 __x64_sys_mkdir+0xf2/0x140 fs/namei.c:4163
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f28c7e180d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f28c7db3218 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f28c7eb2718 RCX: 00007f28c7e180d9
RDX: 00007f28c7e180d9 RSI: 0000000000000000 RDI: 00000000200001c0
RBP: 00007f28c7eb2710 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f28c7e7ea68
R13: 00007f28c7e6c07b R14: 0031656c69662f2e R15: 006b6c6265737566
 </TASK>

Crashes (736):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/01/15 03:12 upstream 052d534373b7 551587c1 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-upstream-kasan-gce-selinux-root WARNING in do_mkdirat
2025/12/05 13:53 upstream 2061f18ad76e d1b870e1 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/13 12:05 upstream 8742b2d8935f 22ec1469 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (corrupt fs)] [mounted in repro #2 (clean fs)] [mounted in repro #3 (corrupt fs)] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/11/21 03:14 upstream 8e621c9a3375 280ea308 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root WARNING in do_mkdirat
2023/01/11 13:04 upstream 7dd4b804e080 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in do_mkdirat
2022/12/10 18:05 upstream 3ecc37918c80 67be1ae7 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in do_mkdirat
2024/03/20 09:02 upstream 78c3925c048c a485f239 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream WARNING in do_mkdirat
2022/12/10 22:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a5541c0811a0 67be1ae7 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in do_mkdirat
2022/12/09 19:50 upstream 0d1409e4ff08 67be1ae7 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in do_mkdirat
2023/01/28 17:58 linux-next e2f86c02fdc9 9dfcf09c .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in do_mkdirat
2025/12/14 06:34 upstream 9d9c1cfec01c d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in do_mkdirat
2025/12/10 20:02 upstream c9b47175e913 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_mkdirat
2025/09/03 23:51 upstream ec299e4dc21e 96a211bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in do_mkdirat
2024/06/14 17:51 upstream 2ccbdf43d5e7 8d849073 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in do_mkdirat
2024/04/22 06:01 upstream 48cf398f15fc af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in do_mkdirat
2026/02/01 20:10 upstream 162b42445b58 6b8752f2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/02/01 05:14 upstream 162b42445b58 6b8752f2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/31 01:22 upstream 4d310797262f c75a2f6e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/30 17:53 upstream 4d310797262f ea6dba22 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/30 10:31 upstream 4d310797262f bfa73b7b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/30 04:43 upstream 4d310797262f bfa73b7b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/28 02:51 upstream 1f97d9dcf536 3029c699 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/27 18:13 upstream fcb70a56f4d8 43e1df1d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/27 02:53 upstream fcb70a56f4d8 efb3e894 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/26 04:44 upstream 023777797472 02bac031 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/25 08:22 upstream 5dbeeb268b63 40acda8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/25 01:38 upstream 5dbeeb268b63 40acda8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/24 08:43 upstream c133687c2eae 4f25b9b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/24 01:42 upstream c133687c2eae 4f25b9b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/23 19:47 upstream c072629f05d7 319d7797 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/20 23:28 upstream c03e9c42ae8f 2494e18d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/20 06:39 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/19 06:14 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/19 03:00 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/18 07:01 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/18 05:15 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/17 06:56 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/16 15:49 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/16 07:42 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/16 04:27 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/15 15:44 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/15 09:16 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/14 07:33 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/12 06:29 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/11 02:54 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/10 13:07 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/10 07:37 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/10 01:00 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/09 21:17 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/09 19:49 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/07 23:56 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/07 12:10 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/07 06:13 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/05 19:44 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/05 10:30 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/05 03:16 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/04 23:00 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/03 07:48 upstream 9b0436804460 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/02 02:18 upstream b69053dd3ffb d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/01 16:48 upstream b69053dd3ffb d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2026/01/01 02:35 upstream 349bd28a86f2 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/12/30 23:39 upstream dbf8fe85a16a d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2024/02/04 18:53 upstream 3a0e92207940 a67b2c42 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in do_mkdirat
2024/05/16 21:00 upstream 3c999d1ae3c7 ad5321c6 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in do_mkdirat
2022/11/29 14:42 upstream ca57f02295f1 ca9683b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_mkdirat
2025/11/30 11:17 linux-next 7d31f578f323 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in do_mkdirat
2025/06/04 15:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci d7fa1af5b33e fd5e6e61 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in do_mkdirat
* Struck through repros no longer work on HEAD.