panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0xa: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *416158 23488 0 0 0x4000000 0 syz-executor1 db_enter() at db_enter+0xa sys/arch/amd64/amd64/db_interface.c:399 panic() at panic+0x147 sys/kern/subr_prf.c:208 uvm_fault_unwire_locked(ffffff003f12bd68,5,ffffff002ba4f810) at uvm_fault_unwire_locked+0x270 uvm_map_pageable_wire(4000,ffffff003f12bd68,0,ffff800014ab6c98,1,ffffff002ba4f810) at uvm_map_pageable_wire+0x475 sys/uvm/uvm_map.c:2288 uvm_mmaplock(ffffff003f12bd68,ffffff00376038e8,ffffff0030454c40,1,11) at uvm_mmaplock+0x103 sys/uvm/uvm_mmap.c:999 sys_mmap(ffff800014ab6db0,ffff800014af32d8,ffff800014a15988) at sys_mmap+0x89e sys/uvm/uvm_mmap.c:534 syscall(0) at syscall+0x3e4 Xsyscall(6,0,ffffffffffffffa3,0,7,1e47e010) at Xsyscall+0x128 end of kernel end trace frame: 0x30175d3a0, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.