__loop_clr_fd: partition scan of loop3 failed (rc=-22)
WARNING: CPU: 0 PID: 24129 at fs/block_dev.c:1831 blkdev_put+0x4bd/0x540 fs/block_dev.c:1831
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 24129 Comm: syz-executor3 Not tainted 4.20.0-rc1-next-20181109+ #110
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+0x244/0x39d lib/dump_stack.c:113
 panic+0x2ad/0x55c kernel/panic.c:188
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:blkdev_put+0x4bd/0x540 fs/block_dev.c:1831
Code: 10 e0 ff 48 8b 55 d0 e9 bb fc ff ff 4c 89 ff e8 e9 10 e0 ff e9 fa fc ff ff e8 ff b8 9c ff 0f 0b e9 4c fc ff ff e8 f3 b8 9c ff <0f> 0b e9 bc fc ff ff e8 e7 10 e0 ff e9 9c fb ff ff 4c 89 f7 e8 da
RSP: 0018:ffff88017f55fb38 EFLAGS: 00010293
RAX: ffff88017cca2100 RBX: ffff880173804280 RCX: ffffffff81e2ec75
RDX: 0000000000000000 RSI: ffffffff81e2efbd RDI: 0000000000000005
RBP: ffff88017f55fb70 R08: ffff88017cca2100 R09: ffffed002feabf54
R10: ffffed002feabf54 R11: 0000000000000003 R12: ffff880173804298
R13: 00000000080a009d R14: ffff880173804340 R15: ffff880173804328
 blkdev_close+0x8b/0xb0 fs/block_dev.c:1867
 __fput+0x3bc/0xa70 fs/file_table.c:279
 ____fput+0x15/0x20 fs/file_table.c:312
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x411021
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffdf3990ae0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000000000000000a RCX: 0000000000411021
RDX: fffffffffffffff7 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 0000000000000000 R08: 00000000288a7cb2 R09: 00000000288a7cb6
R10: 00007ffdf3990a10 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000243 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..