panic: mtx 0xffffffff839b7190: locking against myself
Starting stack trace...
panic(ffffffff833dde30) at panic+0x1d0 sys/kern/subr_prf.c:229
mtx_enter_try(ffffffff839b7190) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271
mtx_enter(ffffffff839b7190) at mtx_enter+0x60 sys/kern/kern_lock.c:239
uvm_pageclean(fffffd8009301a08) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline]
uvm_pageclean(fffffd8009301a08) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980
uvm_pagefree(fffffd8009301a08) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvn_get(fffffd805e1e5d38,1000,ffff80002a2c7fd8,ffff80002a2c7fbc,0,2,78b17e103f61df55,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118
uvm_fault_lower_io(ffff80002a2c81f0,ffff80002a2c8228,ffff80002a2c8070,ffff80002a2c8058) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1651
uvm_fault_lower(ffff80002a2c81f0,ffff80002a2c8228,ffff80002a2c8170) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1418
uvm_fault(fffffd806bc76d40,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002a2c8380,200000001280) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a2c8380) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f00bbb39fb0, count: 245
End of stack trace.