BUG: MAX_STACK_TRACE_ENTRIES too low!
turning off the locking correctness validator.
CPU: 1 PID: 26518 Comm: syz-executor694 Not tainted 5.2.0-next-20190708 #33
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
 save_trace kernel/locking/lockdep.c:473 [inline]
 save_trace.isra.0.cold+0x14/0x19 kernel/locking/lockdep.c:458
 mark_lock+0x3db/0x11e0 kernel/locking/lockdep.c:3583
 mark_usage kernel/locking/lockdep.c:3509 [inline]
 __lock_acquire+0x1409/0x4c30 kernel/locking/lockdep.c:3834
 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4413
 flush_workqueue+0x126/0x14b0 kernel/workqueue.c:2774
 drain_workqueue+0x1b4/0x470 kernel/workqueue.c:2939
 destroy_workqueue+0x21/0x6c0 kernel/workqueue.c:4320
 io_finish_async+0xd5/0x140 fs/io_uring.c:2474
 io_ring_ctx_free fs/io_uring.c:2982 [inline]
 io_ring_ctx_wait_and_kill+0x133/0x600 fs/io_uring.c:3046
 io_uring_release+0x42/0x50 fs/io_uring.c:3054
 __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/0x2ea0 kernel/exit.c:877
 do_group_exit+0x135/0x360 kernel/exit.c:981
 __do_sys_exit_group kernel/exit.c:992 [inline]
 __se_sys_exit_group kernel/exit.c:990 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:990
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43ffb8
Code: Bad RIP value.
RSP: 002b:00007fffa46ed998 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ffb8
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bf7f0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000