syzbot


WARNING in notify_change (5)

Status: moderation: reported on 2024/04/09 09:55
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+20f3f42f0f4d77a315e8@syzkaller.appspotmail.com
First crash: 46d, last: 2d02h
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 1796d 1862d 1/1 fixed on 2019/11/30 21:02
upstream WARNING in notify_change (4) fs 1 212d 208d 0/26 auto-obsoleted due to no activity on 2024/01/19 20:10
upstream WARNING in notify_change (3) fs 2 390d 396d 0/26 auto-obsoleted due to no activity on 2023/07/26 12:25
linux-6.1 WARNING in notify_change 3 20d 41d 0/3 upstream: reported on 2024/04/09 23:34
upstream WARNING in notify_change (2) fuse C unreliable 2 545d 546d 22/26 fixed on 2023/02/24 13:50
linux-5.15 WARNING in notify_change origin:lts-only C unreliable 3 45d 161d 0/3 upstream: reported C repro on 2023/12/12 19:33
linux-4.19 WARNING in notify_change C done 12 1795d 1852d 1/1 fixed on 2019/12/01 09:13
upstream WARNING in notify_change fs C 566 1845d 2234d 12/26 fixed on 2019/07/24 12:46

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11633 at fs/attr.c:388 notify_change+0xc0d/0xe70 fs/attr.c:388
Modules linked in:
CPU: 0 PID: 11633 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-09429-g61307b7be41a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:notify_change+0xc0d/0xe70 fs/attr.c:388
Code: 28 4c 89 e6 89 da e8 f2 81 4e 02 45 31 f6 44 89 f0 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 94 5e 84 ff 90 <0f> 0b 90 e9 bf f4 ff ff 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c 41 f4
RSP: 0018:ffffc9000c02fbe8 EFLAGS: 00010283
RAX: ffffffff8211d0ac RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90014c00000 RSI: 000000000000735a RDI: 000000000000735b
RBP: ffffffff8e47b7a0 R08: ffffffff8211c566 R09: 1ffff1100fadf2a1
R10: dffffc0000000000 R11: ffffed100fadf2a2 R12: ffff8880255ffa70
R13: ffffc9000c02fd40 R14: ffff88807d6f9428 R15: dffffc0000000000
FS:  00007f379e9dd6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000404e8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 chown_common+0x501/0x850 fs/open.c:790
 do_fchownat+0x16d/0x250 fs/open.c:821
 __do_sys_lchown fs/open.c:846 [inline]
 __se_sys_lchown fs/open.c:844 [inline]
 __x64_sys_lchown+0x85/0xa0 fs/open.c:844
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f379dc7cee9
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:00007f379e9dd0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007f379ddac050 RCX: 00007f379dc7cee9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f379dcc949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f379ddac050 R15: 00007fff4afd40e8
 </TASK>

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/19 17:30 upstream 61307b7be41a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in notify_change
2024/05/19 12:46 upstream 0450d2083be6 c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in notify_change
2024/05/16 12:43 upstream 8c06da67d0bd ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in notify_change
2024/04/07 17:50 upstream fe46a7dd189e ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in notify_change
2024/04/05 09:49 upstream fe46a7dd189e 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in notify_change
2024/05/13 23:33 linux-next 6ba6c795dc73 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in notify_change
2024/05/09 23:58 linux-next 704ba27ac555 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in notify_change
2024/05/07 01:00 linux-next 2b84edefcad1 c035c6de .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in notify_change
2024/05/06 01:29 linux-next 9221b2819b8a 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in notify_change
2024/04/27 22:31 linux-next bb7a2467e6be 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in notify_change
* Struck through repros no longer work on HEAD.