syzbot


WARNING in notify_change (2)

Status: upstream: reported on 2025/06/03 01:11
Reported-by: syzbot+423874fcec7c3f909b33@syzkaller.appspotmail.com
First crash: 25d, last: 25d
Similar bugs (11)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in notify_change C done 14 2198d 2264d 1/1 fixed on 2019/11/30 21:02
upstream WARNING in notify_change (5) fs 15 373d 444d 0/29 auto-obsoleted due to no activity on 2024/09/01 10:33
upstream WARNING in notify_change (4) fs 1 615d 611d 0/29 auto-obsoleted due to no activity on 2024/01/19 20:10
upstream WARNING in notify_change (3) fs 2 792d 799d 0/29 auto-obsoleted due to no activity on 2023/07/26 12:25
upstream WARNING in notify_change (6) fs 2 274d 271d 0/29 auto-obsoleted due to no activity on 2024/11/25 06:24
linux-6.1 WARNING in notify_change 6 325d 444d 0/3 auto-obsoleted due to no activity on 2024/11/14 17:33
upstream WARNING in notify_change (2) fuse C unreliable 2 948d 948d 22/29 fixed on 2023/02/24 13:50
upstream WARNING in notify_change (7) fs 1 81d 77d 0/29 moderation: reported on 2025/04/12 00:31
linux-5.15 WARNING in notify_change origin:lts-only C unreliable 4 48d 563d 0/3 upstream: reported C repro on 2023/12/12 19:33
linux-4.19 WARNING in notify_change C done 12 2198d 2255d 1/1 fixed on 2019/12/01 09:13
upstream WARNING in notify_change fs C 566 2247d 2636d 12/29 fixed on 2019/07/24 12:46

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7753 at fs/attr.c:390 notify_change+0xce9/0xf40 fs/attr.c:390
Modules linked in:
CPU: 0 PID: 7753 Comm: syz.1.1410 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:notify_change+0xce9/0xf40 fs/attr.c:390
Code: 89 e6 e8 9a 2a e9 01 4c 89 e7 44 89 ee e8 6f 69 e9 01 31 db 89 d8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 47 2d 99 ff <0f> 0b e9 dd f3 ff ff 89 e9 80 e1 07 fe c1 38 c1 0f 8c 64 f3 ff ff
RSP: 0018:ffffc900048dfc10 EFLAGS: 00010283
RAX: ffffffff81e7a9c9 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000e872000 RSI: 000000000000595c RDI: 000000000000595d
RBP: ffff88805533eb80 R08: dffffc0000000000 R09: ffffed100aa67d8d
R10: ffffed100aa67d8d R11: 1ffff1100aa67d8c R12: ffffc900048dfd40
R13: ffff888070bbea48 R14: 0000000000000046 R15: dffffc0000000000
FS:  00007f11a63146c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11a6313f98 CR3: 0000000029741000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 chown_common+0x486/0x620 fs/open.c:736
 do_fchownat+0x164/0x270 fs/open.c:767
 __do_sys_fchownat fs/open.c:782 [inline]
 __se_sys_fchownat fs/open.c:779 [inline]
 __x64_sys_fchownat+0xb1/0xc0 fs/open.c:779
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f11a558e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f11a6314038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104
RAX: ffffffffffffffda RBX: 00007f11a57b6080 RCX: 00007f11a558e969
RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007f11a5610ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f11a57b6080 R15: 00007ffe096b5a28
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/03 01:11 linux-6.1.y da3c5173c55f a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in notify_change
* Struck through repros no longer work on HEAD.