WARNING: CPU: 0 PID: 10457 at fs/block_dev.c:1899 __blkdev_put+0x6ba/0x810 fs/block_dev.c:1899
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 10457 Comm: syz-executor.0 Not tainted 5.3.0-rc3-next-20190809 #63
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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:220
 __warn.cold+0x20/0x4c kernel/panic.c:584
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:__blkdev_put+0x6ba/0x810 fs/block_dev.c:1899
Code: 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 24 fd ff ff 48 8b bd 50 ff ff ff e8 90 5d e6 ff e9 13 fd ff ff e8 46 6f ab ff <0f> 0b e9 dc fa ff ff 48 89 cf e8 57 5d e6 ff e9 6a fa ff ff 48 8b
RSP: 0018:ffff88808f8d7c90 EFLAGS: 00010293
RAX: ffff88809785c380 RBX: ffff8880aa005040 RCX: ffffffff81c6a4c4
RDX: 0000000000000000 RSI: ffffffff81c6a9ea RDI: 0000000000000005
RBP: ffff88808f8d7d88 R08: ffff88809785c380 R09: ffffed1015400a0c
R10: ffff88808f8d7c80 R11: ffff8880aa00505f R12: 0000000000000002
R13: dffffc0000000000 R14: ffff8880aa005058 R15: ffff8880aa005058
 blkdev_put+0x98/0x560 fs/block_dev.c:1969
 blkdev_close+0x8b/0xb0 fs/block_dev.c:1976
 __fput+0x2ff/0x890 fs/file_table.c:280
 ____fput+0x16/0x20 fs/file_table.c:313
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x65f/0x760 arch/x86/entry/common.c:300
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4134f0
Code: 01 f0 ff ff 0f 83 30 1b 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 9d 2d 66 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff
RSP: 002b:00007ffecbf6f818 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000004134f0
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000003
RBP: 00000000000003e3 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffecbf6f850 R14: 000000000004ca17 R15: 00007ffecbf6f860
Kernel Offset: disabled
Rebooting in 86400 seconds..