syzbot

 sign-in | mailing list | source | docs
🐞 Open [1487]
≡ Subsystems
🐞 Fixed [6557]
🐞 Invalid [16780]
⬇ Missing Backports [203]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

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: 1015d, last: 5h07m
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 (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in do_mkdirat (3) -1 16 140d 208d 0/3 auto-obsoleted due to no activity on 2025/07/02 00:38
linux-6.1 WARNING in do_mkdirat -1 7 659d 884d 0/3 auto-obsoleted due to no activity on 2024/02/28 16:21
linux-6.1 WARNING in do_mkdirat (2) -1 60 279d 532d 0/3 auto-obsoleted due to no activity on 2025/02/12 20:24
linux-6.1 WARNING in do_mkdirat (4) -1 1 16d 16d 0/3 upstream: reported on 2025/08/24 17:03
linux-5.15 WARNING in do_mkdirat origin:lts-only -1 C inconclusive 19 36d 798d 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 (522):
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
2025/09/08 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
2025/05/18 14:00 upstream 5723cc3450bc f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-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
2025/09/10 03:52 upstream 9dd1835ecda5 fdeaa69b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/10 02:17 upstream 9dd1835ecda5 fdeaa69b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/08 22:51 upstream f777d1112ee5 d291dd2d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/08 09:54 upstream 76eeb9b8de98 d291dd2d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/08 00:56 upstream 6ab41fca2e80 d291dd2d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/06 18:07 upstream d1d10cea0895 d291dd2d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/03 03:59 upstream e6b9dce0aeeb 96a211bc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/09/01 21:15 upstream b320789d6883 807a3b61 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/31 08:02 upstream c8bc81a52d5a 807a3b61 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/30 22:36 upstream 11e7861d680c 807a3b61 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/29 12:26 upstream 07d9df80082b 3e1beec6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/29 01:23 upstream 07d9df80082b d401b9d7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/28 18:46 upstream 07d9df80082b bee60a83 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/27 15:29 upstream fab1beda7597 e12e5ba4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/26 23:38 upstream fab1beda7597 e12e5ba4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/26 17:04 upstream fab1beda7597 e12e5ba4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/26 04:27 upstream b6add54ba618 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/25 03:33 upstream 69fd6b99b8f8 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/15 00:31 upstream 0cc53520e68b dcc075fb .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/14 22:31 upstream 0cc53520e68b dcc075fb .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/14 11:43 upstream 0cc53520e68b 22ec1469 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/14 03:52 upstream dfc0f6373094 22ec1469 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/13 19:04 upstream 8742b2d8935f 22ec1469 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/12 23:14 upstream 0e39a731820a 22ec1469 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/11 22:16 upstream 8f5ae30d69d7 c06e8995 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/11 08:12 upstream 8f5ae30d69d7 32a0e5ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/06 21:14 upstream 479058002c32 4bd24a3e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/05 04:50 upstream 35a813e010b9 f5bcc8dc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/04 17:28 upstream d2eedaa3909b abdcb213 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/04 16:13 upstream d2eedaa3909b abdcb213 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/04 05:00 upstream 352af6a011d5 7368264b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/01 12:11 upstream d6084bb815c4 0c075d67 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/01 08:06 upstream d6084bb815c4 0c075d67 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/08/01 00:20 upstream d6084bb815c4 3526e777 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/29 07:52 upstream ced1b9e0392d c4a95487 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/28 23:18 upstream 038d61fd6422 6654ea9c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/27 20:24 upstream ec2df4364666 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/27 07:45 upstream 302f88ff3584 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/27 03:41 upstream 302f88ff3584 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/23 08:31 upstream 89be9a83ccf1 e1dd4f22 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/22 02:01 upstream 89be9a83ccf1 1555463b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_mkdirat
2025/07/21 15:06 upstream 89be9a83ccf1 56d87229 .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
2025/09/10 09:02 linux-next 5f540c4aade9 fdeaa69b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in do_mkdirat
2025/08/24 11:38 linux-next 7fa4d8dc380f bf27483f .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.