syzbot


WARNING in notify_change

Status: upstream: reported on 2024/04/09 23:34
Reported-by: syzbot+c291b6d61bc0f5c8615c@syzkaller.appspotmail.com
First crash: 76d, last: 7d17h
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in notify_change C done 14 1830d 1896d 1/1 fixed on 2019/11/30 21:02
upstream WARNING in notify_change (5) fs 15 5d15h 76d 0/27 moderation: reported on 2024/04/09 09:55
upstream WARNING in notify_change (4) fs 1 247d 243d 0/27 auto-obsoleted due to no activity on 2024/01/19 20:10
upstream WARNING in notify_change (3) fs 2 424d 431d 0/27 auto-obsoleted due to no activity on 2023/07/26 12:25
upstream WARNING in notify_change (2) fuse C unreliable 2 579d 580d 22/27 fixed on 2023/02/24 13:50
linux-5.15 WARNING in notify_change origin:lts-only C unreliable 3 80d 195d 0/3 upstream: reported C repro on 2023/12/12 19:33
linux-4.19 WARNING in notify_change C done 12 1830d 1886d 1/1 fixed on 2019/12/01 09:13
upstream WARNING in notify_change fs C 566 1879d 2268d 12/27 fixed on 2019/07/24 12:46

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5696 at fs/attr.c:390 notify_change+0xd61/0xfc0
Modules linked in:
CPU: 0 PID: 5696 Comm: syz-executor.2 Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:notify_change+0xd61/0xfc0 fs/attr.c:390
Code: e6 e8 83 f3 05 02 4c 89 e7 89 de e8 19 37 06 02 45 31 f6 44 89 f0 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 1f ac 91 ff <0f> 0b e9 66 f3 ff ff 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c e9 f2 ff
RSP: 0018:ffffc9000341fc50 EFLAGS: 00010287
RAX: ffffffff81f8e731 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90012d9d000 RSI: 000000000000222f RDI: 0000000000002230
RBP: ffffffff8cfd5220 R08: ffffffff81f8da90 R09: ffffed100a60fe3b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8880533aeeb0 R14: ffff88805307f0f0 R15: ffffc9000341fd80
FS:  00007f8835bf66c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31222000 CR3: 0000000062474000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 chmod_common+0x2a7/0x4b0 fs/open.c:606
 do_fchmodat fs/open.c:645 [inline]
 __do_sys_fchmodat fs/open.c:658 [inline]
 __se_sys_fchmodat fs/open.c:655 [inline]
 __x64_sys_fchmodat+0x117/0x1a0 fs/open.c:655
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f883707cf29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007f8835bf60c8 EFLAGS: 00000246 ORIG_RAX: 000000000000010c
RAX: ffffffffffffffda RBX: 00007f88371b4050 RCX: 00007f883707cf29
RDX: 0000000000000120 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f88370ec074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f88371b4050 R15: 00007ffef4857b48
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/17 08:49 linux-6.1.y eb44d83053d6 88722c0f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in notify_change
2024/06/04 02:45 linux-6.1.y 88690811da69 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in notify_change
2024/05/01 09:28 linux-6.1.y dcbc050cb0d3 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in notify_change
2024/04/27 22:31 linux-6.1.y f2295faba5e8 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in notify_change
2024/04/09 23:33 linux-6.1.y 347385861c50 171ec371 .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.