panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0xa: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *200129 51956 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(20001000,20003000,0) at uvm_fault_unwire_locked+0x270 uvm_fault_unwire(1000,ffffff002aeb0700,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff800014ae60d8,ffffff003ad5bc58,ffffff003ad5bc58,ffff800014ae60d8,ffff800014ae5fa8) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0x9d sys/kern/spec_vnops.c:223 VOP_READ(ffff800014ae60d8,ffffff003ad5bc58,ffffff0030c8af10,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247 vn_read(ffffff0030c8af10,ffff800014a23cf8,1000) at vn_read+0x130 sys/kern/vfs_vnops.c:365 dofilereadv(0,1,ffff800014a23cf8,ffff800014ae6200,ffff800014ae6218) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(ffff800014ae62a0,ffff800014a23cf8,ffff800014a08c88) at sys_readv+0xce sys/kern/sys_generic.c:182 syscall(0) at syscall+0x3e4 Xsyscall(6,0,ffffffffffffffbc,0,3,4aa887d7010) at Xsyscall+0x128 end of kernel end trace frame: 0x4ad3a4d1020, count: 3 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.