Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 PID: 5761 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 panic+0x2ca/0x720 kernel/panic.c:340
 check_panic_on_warn kernel/panic.c:236 [inline]
 __warn+0x2e0/0x470 kernel/panic.c:681
 __report_bug lib/bug.c:199 [inline]
 report_bug+0x2be/0x4f0 lib/bug.c:219
 handle_bug+0xcf/0x120 arch/x86/kernel/traps.c:310
 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:345
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:606
RIP: 0010:blkdev_flush_mapping+0xac/0x290 block/bdev.c:643
Code: 42 80 3c 28 00 74 08 4c 89 f7 e8 af d0 cd fd 49 8b 3e 48 ba ff ff ff ff ff ff ff 7f 31 f6 e8 cb 5d a3 fd eb 11 e8 24 4e 75 fd <0f> 0b 48 85 db 75 9f e8 18 4e 75 fd 48 89 1c 24 4c 8d b3 80 00 00
RSP: 0018:ffffc9000462fda0 EFLAGS: 00010293
RAX: ffffffff8412235c RBX: ffff888020278bc0 RCX: ffff888027b9da00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000002 R08: ffff888020278bfb R09: 1ffff1100404f17f
R10: dffffc0000000000 R11: ffffed100404f180 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888020278cf4 R15: ffff888020278bf8
 blkdev_put_whole block/bdev.c:676 [inline]
 blkdev_put+0x49a/0x7a0 block/bdev.c:954
 blkdev_release+0x84/0x90 block/fops.c:604
 __fput+0x221/0x940 fs/file_table.c:418
 __do_sys_close fs/open.c:1574 [inline]
 __se_sys_close+0x15c/0x1e0 fs/open.c:1559
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4240aa7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc000b4b50 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f4240a1d880 RCX: 00007f4240aa7407
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007f4240a1d6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 000055bc56e0a410 R14: 0000000000000008 R15: 000055bc56ffa090
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..