WARNING in check_for_bios_corruption

Status: upstream: reported C repro on 2019/09/27 09:02
Reported-by: syzbot+73619b5f1dde39f429cb@syzkaller.appspotmail.com
First crash: 2535d, last: 2281d
Fix bisection the fix commit could be any of (bisect log):
  f6e27dbb1afa Linux 4.14.146
  4139fb08c05f Linux 4.14.187
   
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in check_for_bios_corruption -1 syz, C error 1 1811d 2518d 0/1 upstream: reported C repro on 2019/10/14 08:13
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2023/01/20 15:32 10m retest repro linux-4.14.y report log
2022/09/05 04:27 10m retest repro linux-4.14.y report log
▶ ▼ Fix bisection attempts (8)
Created Duration User Patch Repo Result
2020/07/06 21:00 31m bisect fix linux-4.14.y OK (2) job log
2020/06/06 20:29 31m bisect fix linux-4.14.y OK (0) job log log
2020/05/07 19:52 35m bisect fix linux-4.14.y OK (0) job log log
2020/04/07 19:20 31m bisect fix linux-4.14.y OK (0) job log log
2020/03/08 18:47 33m bisect fix linux-4.14.y OK (0) job log log
2020/02/07 18:07 39m bisect fix linux-4.14.y OK (0) job log log
2020/01/08 17:34 33m bisect fix linux-4.14.y OK (0) job log log
2019/12/09 14:26 30m bisect fix linux-4.14.y OK (0) job log log

Sample crash report:
Corrupted low memory at ffff888000003fe8 (3fe8 phys) = ffffffffffffffff
Corrupted low memory at ffff888000003ff0 (3ff0 phys) = ffffffffffffffff
Corrupted low memory at ffff888000003ff8 (3ff8 phys) = ffffffffffffffff
Memory corruption detected in low memory
------------[ cut here ]------------
WARNING: CPU: 0 PID: 24 at arch/x86/kernel/check.c:157 check_for_bios_corruption arch/x86/kernel/check.c:157 [inline]
WARNING: CPU: 0 PID: 24 at arch/x86/kernel/check.c:157 check_for_bios_corruption.cold+0x13/0x26 arch/x86/kernel/check.c:135
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.14.146 #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:17 [inline]
 dump_stack+0x138/0x197 lib/dump_stack.c:53
 panic+0x1f2/0x426 kernel/panic.c:182
 __warn.cold+0x2f/0x36 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:check_for_bios_corruption arch/x86/kernel/check.c:157 [inline]
RIP: 0010:check_for_bios_corruption.cold+0x13/0x26 arch/x86/kernel/check.c:135
RSP: 0018:ffff8880a9e67ce8 EFLAGS: 00010282
RAX: 0000000000000028 RBX: ffff888000010000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff866d10e0 RDI: ffffed10153ccf93
RBP: ffff8880a9e67d20 R08: 0000000000000028 R09: ffff8880a9e58f08
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888000010000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888000000000
 check_corruption+0xd/0x67 arch/x86/kernel/check.c:165
 process_one_work+0x863/0x1600 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x319/0x430 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/09/27 10:56 linux-4.14.y f6e27dbb1afa 2f1548bc .config console log report syz C ci2-linux-4-14
2019/09/27 08:01 linux-4.14.y f6e27dbb1afa 2f1548bc .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.