BUG: MAX_STACK_TRACE_ENTRIES too low! turning off the locking correctness validator. CPU: 1 PID: 29055 Comm: syz-executor583 Not tainted 5.2.0-next-20190718 #41 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 ucma_close+0x26d/0x310 /drivers/infiniband/core/ucma.c:1771 __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: 0033:0x43fd98 Code: Bad RIP value. RSP: 002b:00007ffd54bf6748 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fd98 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bf630 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000