syzbot


WARNING in ovl_real_fdget_meta

Status: upstream: reported C repro on 2020/01/11 04:27
Reported-by: syzbot+e967b3e531e31a44f295@syzkaller.appspotmail.com
First crash: 1615d, last: 476d
Fix bisection: failed (error log, bisect log)
  
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ovl_real_fdget_meta C done error 115 1379d 1785d 0/28 auto-obsoleted due to no activity on 2022/12/30 12:10
Fix bisection attempts (7)
Created Duration User Patch Repo Result
2020/10/14 08:03 3m bisect fix linux-4.19.y error job log (0)
2020/09/14 07:40 23m bisect fix linux-4.19.y job log (0) log
2020/07/24 20:13 28m bisect fix linux-4.19.y job log (0) log
2020/06/24 19:48 24m bisect fix linux-4.19.y job log (0) log
2020/04/29 04:39 25m bisect fix linux-4.19.y job log (0) log
2020/03/30 04:14 24m bisect fix linux-4.19.y job log (0) log
2020/02/10 05:11 25m bisect fix linux-4.19.y job log (0) log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8088 at fs/overlayfs/file.c:60 ovl_change_flags fs/overlayfs/file.c:60 [inline]
WARNING: CPU: 0 PID: 8088 at fs/overlayfs/file.c:60 ovl_real_fdget_meta.cold+0x11/0x1e fs/overlayfs/file.c:111
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8088 Comm: syz-executor556 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:ovl_change_flags fs/overlayfs/file.c:60 [inline]
RIP: 0010:ovl_real_fdget_meta.cold+0x11/0x1e fs/overlayfs/file.c:111
Code: e8 42 ff 69 f9 44 89 f6 48 c7 c7 a0 97 99 88 e8 9e 30 fb ff e9 72 e5 71 fa e8 29 ff 69 f9 48 c7 c7 80 9e 99 88 e8 88 30 fb ff <0f> 0b 41 bd fb ff ff ff e9 4a f3 71 fa e8 0b ff 69 f9 48 c7 c7 80
RSP: 0018:ffff888091ca7e10 EFLAGS: 00010286
RAX: 0000000000000024 RBX: 0000000000002000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012394fb4
RBP: 0000000004048000 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880aad60cc0
R13: ffff88808ac42770 R14: 000000000000a000 R15: ffff8880aad60d38
 ovl_real_fdget fs/overlayfs/file.c:118 [inline]
 ovl_llseek+0xe5/0x340 fs/overlayfs/file.c:168
 vfs_llseek fs/read_write.c:300 [inline]
 ksys_lseek+0x14f/0x1b0 fs/read_write.c:313
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f14ca8ce109
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4039e9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f14ca8ce109
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f14ca8920f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f14ca892180
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (37):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/13 22:19 linux-4.19.y 3f8a27f9e27b 957959cb .config console log report syz C [disk image] [vmlinux] ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/10/30 14:13 linux-4.19.y 3f8a27f9e27b 2a71366b .config console log report syz C [disk image] [vmlinux] ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/10/30 10:14 linux-4.19.y 3f8a27f9e27b 2a71366b .config console log report syz C [disk image] [vmlinux] ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/05/29 01:35 linux-4.19.y 3f8a27f9e27b a46af346 .config console log report syz C ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2020/08/15 07:40 linux-4.19.y c14d30dc9987 5ce13532 .config console log report syz C ci2-linux-4-19
2020/01/11 05:10 linux-4.19.y cb1f9a169a0e 4c04afaa .config console log report syz C ci2-linux-4-19
2023/02/22 22:37 linux-4.19.y 3f8a27f9e27b 9f1e2cb3 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2023/02/13 22:00 linux-4.19.y 3f8a27f9e27b 957959cb .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/11/06 18:36 linux-4.19.y 3f8a27f9e27b 6d752409 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/10/30 09:56 linux-4.19.y 3f8a27f9e27b 2a71366b .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/08/01 19:36 linux-4.19.y 3f8a27f9e27b fef302b1 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/05/29 01:13 linux-4.19.y 3f8a27f9e27b a46af346 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/05/10 21:19 linux-4.19.y 3f8a27f9e27b 8b277b8e .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/03/26 14:52 linux-4.19.y 3f8a27f9e27b 89bc8608 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/03/26 14:41 linux-4.19.y 3f8a27f9e27b 89bc8608 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/02/15 01:57 linux-4.19.y 3f8a27f9e27b 8b9ca619 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2022/01/08 19:38 linux-4.19.y 3f8a27f9e27b 2ca0d385 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2021/12/13 00:22 linux-4.19.y 3f8a27f9e27b 49ca1f59 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2021/12/12 20:33 linux-4.19.y 3f8a27f9e27b 49ca1f59 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2021/12/07 19:28 linux-4.19.y 3f8a27f9e27b 0230ba3e .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2021/05/21 16:42 linux-4.19.y 3c8c23092588 3c7fef33 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2021/02/26 17:39 linux-4.19.y 2d19be4653f5 4c37c133 .config console log report info ci2-linux-4-19 WARNING in ovl_real_fdget_meta
2020/05/25 18:46 linux-4.19.y 1bab61d3e8cd 73964a9b .config console log report ci2-linux-4-19
2020/05/20 01:20 linux-4.19.y 258f0cf7ac3b 6d882fd2 .config console log report ci2-linux-4-19
2020/05/04 04:11 linux-4.19.y fdc072324f3c 58ae5e18 .config console log report ci2-linux-4-19
2020/05/04 04:11 linux-4.19.y fdc072324f3c 58ae5e18 .config console log report ci2-linux-4-19
2020/02/29 00:20 linux-4.19.y a083db76118d c88c7b75 .config console log report ci2-linux-4-19
2020/02/27 03:33 linux-4.19.y f25804f38984 251aabb7 .config console log report ci2-linux-4-19
2020/02/24 11:30 linux-4.19.y f25804f38984 1253d6f0 .config console log report ci2-linux-4-19
2020/02/23 13:47 linux-4.19.y 4fccc2503536 2c36e7a7 .config console log report ci2-linux-4-19
2020/02/18 21:47 linux-4.19.y 9b15f7fae677 012fbc32 .config console log report ci2-linux-4-19
2020/02/17 09:41 linux-4.19.y 9b15f7fae677 1f448cd6 .config console log report ci2-linux-4-19
2020/02/14 05:45 linux-4.19.y 357668399cf7 5d7b90f1 .config console log report ci2-linux-4-19
2020/02/10 14:52 linux-4.19.y b499cf4b3a90 35f5e45e .config console log report ci2-linux-4-19
2020/02/10 14:52 linux-4.19.y b499cf4b3a90 35f5e45e .config console log report ci2-linux-4-19
2020/01/11 04:27 linux-4.19.y cb1f9a169a0e 4c04afaa .config console log report ci2-linux-4-19
2020/01/11 04:26 linux-4.19.y cb1f9a169a0e 4c04afaa .config console log report ci2-linux-4-19
* Struck through repros no longer work on HEAD.