panic: assertwaitok: non-zero mutex count: 1
Starting stack trace...
panic(ffffffff830004cc) at panic+0x1ba sys/kern/subr_prf.c:229
assertwaitok() at assertwaitok+0x16f sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x2b6 sys/kern/sched_bsd.c:412
yield() at yield+0x61 sys/kern/sched_bsd.c:320
pool_get(ffffffff8353e380,1) at pool_get+0x1e9 sys/kern/subr_pool.c:589
uvm_mapent_alloc(fffffd807146bc68,0) at uvm_mapent_alloc+0x35a
uvm_map_protect(fffffd807146bc68,20000000,20800000,5,0,0,c00a109f231d0f05) at uvm_map_protect+0x888 sys/uvm/uvm_map.c:3136
sys_mprotect(ffff80003766d6f8,ffff8000376474d0,ffff800037647420) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585
syscall(ffff8000376474d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x882aca677e0, count: 247
End of stack trace.