syzbot


WARNING in check_for_bios_corruption

Status: upstream: reported C repro on 2019/10/14 08:13
Reported-by: syzbot+d6725605e81212aa5b13@syzkaller.appspotmail.com
First crash: 1895d, last: 1188d
Fix bisection: failed (error log, bisect log)
  
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in check_for_bios_corruption C inconclusive 2 1658d 1912d 0/1 upstream: reported C repro on 2019/09/27 09:02
Fix bisection attempts (25)
Created Duration User Patch Repo Result
2021/10/19 20:06 15m bisect fix linux-4.19.y error job log
2021/09/19 19:34 31m bisect fix linux-4.19.y OK (0) job log log
2021/08/20 18:49 28m bisect fix linux-4.19.y OK (0) job log log
2021/07/21 18:14 26m bisect fix linux-4.19.y OK (0) job log log
2021/06/21 17:40 27m bisect fix linux-4.19.y OK (0) job log log
2021/05/22 00:58 23m bisect fix linux-4.19.y OK (0) job log log
2021/04/22 00:26 24m bisect fix linux-4.19.y OK (0) job log log
2021/03/23 00:03 22m bisect fix linux-4.19.y OK (0) job log log
2021/02/20 23:40 22m bisect fix linux-4.19.y OK (0) job log log
2021/02/18 01:01 19m bisect fix linux-4.19.y error job log
2021/02/05 04:49 1m bisect fix linux-4.19.y error job log
2021/01/06 04:22 26m bisect fix linux-4.19.y OK (0) job log log
2020/12/07 00:14 24m bisect fix linux-4.19.y OK (0) job log log
2020/11/06 23:11 24m bisect fix linux-4.19.y OK (0) job log log
2020/10/07 22:34 25m bisect fix linux-4.19.y OK (0) job log log
2020/09/07 22:04 29m bisect fix linux-4.19.y OK (0) job log log
2020/08/08 21:28 27m bisect fix linux-4.19.y OK (0) job log log
2020/07/09 21:02 25m bisect fix linux-4.19.y OK (0) job log log
2020/06/09 19:30 25m bisect fix linux-4.19.y OK (0) job log log
2020/05/10 18:52 26m bisect fix linux-4.19.y OK (0) job log log
2020/04/10 18:14 24m bisect fix linux-4.19.y OK (0) job log log
2020/03/11 17:48 26m bisect fix linux-4.19.y OK (0) job log log
2020/02/10 17:02 25m bisect fix linux-4.19.y OK (0) job log log
2020/01/11 11:26 24m bisect fix linux-4.19.y OK (0) job log log
2019/12/12 10:50 24m bisect fix linux-4.19.y OK (0) job log log

Sample crash report:
Corrupted low memory at 00000000b113e72f (2900 phys) = 000000e8
------------[ cut here ]------------
Memory corruption detected in low memory
WARNING: CPU: 1 PID: 24 at arch/x86/kernel/check.c:157 check_for_bios_corruption arch/x86/kernel/check.c:157 [inline]
WARNING: CPU: 1 PID: 24 at arch/x86/kernel/check.c:157 check_for_bios_corruption+0x10c/0x1a0 arch/x86/kernel/check.c:135
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 4.19.79 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events check_corruption
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x263/0x507 kernel/panic.c:185
 __warn.cold+0x20/0x4a kernel/panic.c:540
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:check_for_bios_corruption arch/x86/kernel/check.c:157 [inline]
RIP: 0010:check_for_bios_corruption+0x10c/0x1a0 arch/x86/kernel/check.c:135
Code: c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 c3 80 3d 9e 49 09 08 00 75 e7 48 c7 c7 e0 e0 47 87 c6 05 8e 49 09 08 01 e8 82 40 10 00 <0f> 0b eb d0 48 89 df 89 55 d0 e8 55 5d 73 00 8b 55 d0 eb 9a 48 89
RSP: 0018:ffff8880aa3afce0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888000010000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155f4a6 RDI: ffffed1015475f8e
RBP: ffff8880aa3afd18 R08: ffff8880aa3a0640 R09: ffffed1015d23ee3
R10: ffffed1015d23ee2 R11: ffff8880ae91f717 R12: ffff888000010000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888000000000
 check_corruption+0xd/0x67 arch/x86/kernel/check.c:165
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/10/14 07:13 linux-4.19.y dafd634415a7 2f661ec4 .config console log report syz C ci2-linux-4-19
* Struck through repros no longer work on HEAD.