WARNING: CPU: 0 PID: 29362 at fs/block_dev.c:1899 __blkdev_put+0x1a9/0x6d0 fs/block_dev.c:1899
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 29362 Comm: blkid Not tainted 5.3.0-rc3+ #69
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113
 panic+0x25c/0x799 kernel/panic.c:219
 __warn+0x22f/0x230 kernel/panic.c:576
 report_bug+0x190/0x290 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0xd7/0x440 arch/x86/kernel/traps.c:272
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:__blkdev_put+0x1a9/0x6d0 fs/block_dev.c:1899
Code: c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 f6 e7 e7 ff 48 8b 3b e8 7e 1d cc ff eb 11 e8 a7 ee ae ff <0f> 0b 4d 85 e4 75 9b e8 9b ee ae ff 4d 8d 74 24 08 4d 89 f7 49 c1
RSP: 0018:ffff888057f1fc30 EFLAGS: 00010293
RAX: ffffffff81c49b39 RBX: 0000000000000002 RCX: ffff8880906aa180
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffff888057f1fcd8 R08: ffffffff81c49acd R09: ffffed101247880c
R10: ffffed101247880c R11: 0000000000000000 R12: ffff8880923c4040
R13: 00000000080a101d R14: dffffc0000000000 R15: ffff8880923c4120
 blkdev_put+0x2c8/0x3b0 fs/block_dev.c:1969
 blkdev_close+0x7b/0xa0 fs/block_dev.c:1976
 __fput+0x2e4/0x740 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:313
 task_work_run+0x17e/0x1b0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:163 [inline]
 prepare_exit_to_usermode+0x459/0x580 arch/x86/entry/common.c:194
 syscall_return_slowpath+0x113/0x4a0 arch/x86/entry/common.c:274
 do_syscall_64+0x126/0x140 arch/x86/entry/common.c:299
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f381a0752b0
Code: 40 75 0b 31 c0 48 83 c4 08 e9 0c ff ff ff 48 8d 3d c5 32 08 00 e8 c0 07 02 00 83 3d 45 a3 2b 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8a 01 00 48 89 04 24
RSP: 002b:00007ffd07fb4298 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f381a0752b0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000919030
R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000005
Kernel Offset: disabled
Rebooting in 86400 seconds..