WARNING: CPU: 0 PID: 19297 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: 19297 Comm: syz-executor.5 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:ffff88806283fb38 EFLAGS: 00010293
RAX: ffff8880997a0140 RBX: ffff888092ba1800 RCX: ffffffff81c6a4c4
RDX: 0000000000000000 RSI: ffffffff81c6a9ea RDI: 0000000000000005
RBP: ffff88806283fc30 R08: ffff8880997a0140 R09: ffffed1012574304
R10: ffff88806283fb28 R11: ffff888092ba181f R12: 0000000000000002
R13: dffffc0000000000 R14: ffff888092ba1818 R15: ffff888092ba1818
 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
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x92f/0x2e50 kernel/exit.c:879
 do_group_exit+0x135/0x360 kernel/exit.c:983
 __do_sys_exit_group kernel/exit.c:994 [inline]
 __se_sys_exit_group kernel/exit.c:992 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:992
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff0c61a418 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000000459829
RDX: 0000000000413451 RSI: 0000000000a74ef0 RDI: 0000000000000000
RBP: 00000000004bef34 R08: 000000000000000c R09: 00007fff0c61a520
R10: 00005555574c6940 R11: 0000000000000246 R12: 000000000075bfc8
R13: 0000000000000003 R14: 0000000000000001 R15: 000000000075bfd4
Kernel Offset: disabled
Rebooting in 86400 seconds..