witness: userret: returning with the following locks held:
exclusive rwlock vmmaplk r = 0 (0xfffffd806ebda6a8)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316
#2  vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227
#3  uvm_map_pageable_wire+0x588 sys/uvm/uvm_map.c:2128
#4  sys_mlockall+0x85 sys/uvm/uvm_mmap.c:914
#5  syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xb08 sys/arch/amd64/amd64/trap.c:579
#6  Xsyscall+0x128
panic: witness_warn
Starting stack trace...
panic(ffffffff83382cc8) at panic+0x1d0 sys/kern/subr_prf.c:229
witness_warn(2,0,ffffffff83341f50) at witness_warn+0x850 witness_debugger sys/kern/subr_witness.c:2576 [inline]
witness_warn(2,0,ffffffff83341f50) at witness_warn+0x850 sys/kern/subr_witness.c:1485
userret(ffff80003b7fc028) at userret+0x3a4 sys/kern/kern_sig.c:2227
syscall(ffff8000383e8330) at syscall+0x9c0 mi_syscall_return sys/sys/syscall_mi.h:203 [inline]
syscall(ffff8000383e8330) at syscall+0x9c0 sys/arch/amd64/amd64/trap.c:600
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x92bdbfa1240, count: 252
End of stack trace.