loop1: p1 p2 p3 p4 < >
------------[ cut here ]------------
binder: 21585:21589 got transaction to invalid handle
binder: 21585:21589 transaction failed 29201/-22, size 16923918160496817-26388279066624 line 3018
------------[ cut here ]------------
WARNING: CPU: 1 PID: 21585 at fs/block_dev.c:1634 blkdev_put+0x4c8/0x560 fs/block_dev.c:1634
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 21585 Comm: syz-executor3 Not tainted 4.9.111-g03c70fe #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a00afc60 ffffffff81eb2729 ffffffff83c48980 00000000ffffffff
 0000000000000000 0000000000000001 0000000000000662 ffff8801a00afd20
 ffffffff814219f5 0000000041b58ab3 ffffffff843ba8c0 ffffffff81421836
Call Trace:
 [<ffffffff81eb2729>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb2729>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff814219f5>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81421ce1>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff811367dc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff81632488>] blkdev_put+0x4c8/0x560 fs/block_dev.c:1634
 [<ffffffff816325ab>] blkdev_close+0x8b/0xb0 fs/block_dev.c:1670
 [<ffffffff81578263>] __fput+0x263/0x700 fs/file_table.c:208
 [<ffffffff81578785>] ____fput+0x15/0x20 fs/file_table.c:244
 [<ffffffff8119833c>] task_work_run+0x10c/0x180 kernel/task_work.c:116
 [<ffffffff8100559c>] tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 [<ffffffff8100559c>] exit_to_usermode_loop+0xfc/0x120 arch/x86/entry/common.c:161
 [<ffffffff810064d4>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline]
 [<ffffffff810064d4>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline]
 [<ffffffff810064d4>] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287
 [<ffffffff839f8cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..