syzbot


WARNING in notify_change (10)

Status: moderation: reported on 2026/06/01 04:30
Subsystems: fs
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+585661cb628f97fca0c3@syzkaller.appspotmail.com
First crash: 7d23h, last: 7d23h
✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision Error
319246eb-c4d4-4a4c-a3ab-48cdb68d396c assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ WARNING in notify_change (10) 2026/05/29 20:41 2026/05/29 20:41 2026/05/29 21:32 6b4a844333e83556da95d61d7f207e7ef5cd4bc6
Similar bugs (14)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in notify_change (2) -1 1 367d 367d 0/3 auto-obsoleted due to no activity on 2025/09/11 01:11
linux-4.14 WARNING in notify_change -1 C done 14 2540d 2606d 1/1 fixed on 2019/11/30 21:02
upstream WARNING in notify_change (5) fs -1 15 715d 786d 0/29 auto-obsoleted due to no activity on 2024/09/01 10:33
upstream WARNING in notify_change (4) fs -1 1 957d 953d 0/29 auto-obsoleted due to no activity on 2024/01/19 20:10
upstream WARNING in notify_change (3) fs -1 2 1134d 1141d 0/29 auto-obsoleted due to no activity on 2023/07/26 12:25
upstream WARNING in notify_change (6) fs -1 2 616d 613d 0/29 auto-obsoleted due to no activity on 2024/11/25 06:24
linux-6.1 WARNING in notify_change -1 6 667d 786d 0/3 auto-obsoleted due to no activity on 2024/11/14 17:33
upstream WARNING in notify_change (2) fuse -1 C unreliable 2 1290d 1290d 22/29 fixed on 2023/02/24 13:50
upstream WARNING in notify_change (9) fs -1 2 145d 148d 0/29 auto-obsoleted due to no activity on 2026/04/10 15:07
upstream WARNING in notify_change (8) fs -1 1 244d 240d 0/29 auto-obsoleted due to no activity on 2026/01/01 09:42
upstream WARNING in notify_change (7) fs -1 1 423d 419d 0/29 auto-obsoleted due to no activity on 2025/07/07 00:30
linux-5.15 WARNING in notify_change origin:lts-only -1 C unreliable 4 20d 905d 0/3 upstream: reported C repro on 2023/12/12 19:33
linux-4.19 WARNING in notify_change -1 C done 12 2540d 2597d 1/1 fixed on 2019/12/01 09:13
upstream WARNING in notify_change fs -1 C 566 2589d 2978d 12/29 fixed on 2019/07/24 12:46

Sample crash report:
------------[ cut here ]------------
!inode_is_locked(inode)
WARNING: fs/attr.c:436 at notify_change+0xc7e/0xf60 fs/attr.c:436, CPU#1: syz.6.838/16856
Modules linked in:
CPU: 1 UID: 0 PID: 16856 Comm: syz.6.838 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:notify_change+0xc7e/0xf60 fs/attr.c:436
Code: 89 ff 4c 89 ee 89 ea e8 80 f3 17 02 31 db 89 d8 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 13 f5 82 ff 90 <0f> 0b 90 e9 57 f4 ff ff 89 d9 80 e1 07 fe c1 38 c1 0f 8c dc f3 ff
RSP: 0018:ffffc90004affbf8 EFLAGS: 00010287
RAX: ffffffff8241782d RBX: 0000000080000000 RCX: 0000000000080000
RDX: ffffc90013f9a000 RSI: 0000000000000810 RDI: 0000000000000811
RBP: 0000000000000046 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100cc61bce R12: ffff88806630de68
R13: ffffc90004affd20 R14: ffff888040490528 R15: dffffc0000000000
FS:  00007f2baa8bd6c0(0000) GS:ffff888126486000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9cc7596cc4 CR3: 0000000097eb2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 chown_common+0x466/0x6c0 fs/open.c:776
 do_fchownat+0x14c/0x250 fs/open.c:804
 __do_sys_chown fs/open.c:824 [inline]
 __se_sys_chown fs/open.c:822 [inline]
 __x64_sys_chown+0x82/0xa0 fs/open.c:822
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2bac68ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2baa8bd028 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007f2bac906090 RCX: 00007f2bac68ce59
RDX: 0000000000000000 RSI: 0000000000008000 RDI: 00002000000000c0
RBP: 00007f2bac722d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2bac906128 R14: 00007f2bac906090 R15: 00007ffd64378748
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/28 04:17 upstream eb3f4b7426cf 4c36e7e5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in notify_change
* Struck through repros no longer work on HEAD.