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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: 1058d, last: 9h41m
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 (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in do_mkdirat (3) -1 16 183d 250d 0/3 auto-obsoleted due to no activity on 2025/07/02 00:38
linux-6.1 WARNING in do_mkdirat -1 7 702d 927d 0/3 auto-obsoleted due to no activity on 2024/02/28 16:21
linux-6.1 WARNING in do_mkdirat (2) -1 60 322d 575d 0/3 auto-obsoleted due to no activity on 2025/02/12 20:24
linux-6.1 WARNING in do_mkdirat (4) -1 1 59d 59d 0/3 upstream: reported on 2025/08/24 17:03
linux-6.6 WARNING in do_mkdirat -1 1 30d 30d 0/2 upstream: reported on 2025/09/22 18:38
linux-5.15 WARNING in do_mkdirat origin:lts-only -1 C inconclusive 21 2d12h 840d 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 (580):
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
2025/08/13 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
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
2025/09/17 01:35 upstream 5aca7966d2a7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in do_mkdirat
2025/09/08 14:02 upstream 76eeb9b8de98 d291dd2d .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
2025/10/22 22:18 upstream dd72c8fcf6d3 c0460fcd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/20 03:29 upstream d9043c79ba68 1c8c8cd8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/18 13:16 upstream f406055cb18c 1c8c8cd8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/18 03:24 upstream 6f3b6e91f720 1c8c8cd8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/17 13:29 upstream 98ac9cc4b445 e18aa505 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/17 04:48 upstream 634ec1fc7982 19568248 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/17 00:58 upstream 634ec1fc7982 19568248 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/16 13:49 upstream 7ea30958b305 19568248 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/14 20:58 upstream 9b332cece987 b6605ba8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/14 07:12 upstream 3a8660878839 b6605ba8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/14 05:26 upstream 3a8660878839 b6605ba8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/13 04:59 upstream 3a8660878839 ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/12 14:11 upstream 67029a49db6c ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/12 10:18 upstream 98906f9d850e ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/10 17:08 upstream 5472d60c129f ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/09 07:10 upstream cd5a0afbdf80 7e2882b3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/09 04:12 upstream cd5a0afbdf80 7e2882b3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/09 00:25 upstream cd5a0afbdf80 7e2882b3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/08 13:36 upstream 0d97f2067c16 7e2882b3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/08 09:09 upstream 0d97f2067c16 7e2882b3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/07 19:20 upstream c746c3b51698 7e2882b3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/07 00:55 upstream ba9dac987319 8ef35d49 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/06 15:57 upstream fd94619c4336 91305dbe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/06 13:46 upstream fd94619c4336 91305dbe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/06 12:44 upstream fd94619c4336 91305dbe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/06 02:12 upstream 6a74422b9710 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/04 23:21 upstream cbf33b8e0b36 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/04 10:35 upstream 2ccb4d203fe4 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/03 06:02 upstream f79e772258df 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/10/03 02:33 upstream f79e772258df 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/29 15:57 upstream e5f0a698b34e 86341da6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/28 08:22 upstream 51a24b7deaae 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/27 21:24 upstream fec734e8d564 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/27 14:44 upstream fec734e8d564 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/24 23:44 upstream 4ea5af085908 0abd0691 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/24 06:03 upstream cec1e6e5d1ab 0abd0691 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/23 14:02 upstream cec1e6e5d1ab 0ac7291c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/23 06:36 upstream cec1e6e5d1ab 0ac7291c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/21 07:51 upstream 3b08f56fbbb9 67c37560 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/20 22:46 upstream cd89d487374c 67c37560 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/20 10:08 upstream 1522b530ac3e 67c37560 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/18 11:36 upstream 8b789f2b7602 e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/17 13:18 upstream 5aca7966d2a7 e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/17 10:58 upstream 5aca7966d2a7 e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/16 05:25 upstream 46a51f4f5eda e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/15 10:29 upstream 79e8447ec662 e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/14 14:45 upstream f83a4f2a4d8c e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/13 05:39 upstream 22f20375f5b7 e2beed91 .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
2025/10/19 23:24 linux-next 93f3bab4310d 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in do_mkdirat
2025/10/07 04:57 linux-next 4a7153147192 8ef35d49 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in do_mkdirat
2025/09/15 22:04 linux-next 590b221ed425 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in do_mkdirat
2025/09/13 20:35 linux-next 590b221ed425 e2beed91 .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.