panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *501000 59852 0 0 0x4000000 1 syz-executor 121745 67722 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8349825c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c4673f0,200000020000,20000002e000) at uvm_fault_unwire_locked+0x4be uvm_fault_wire(fffffd806c4673f0,200000020000,200000031000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1724 [inline] uvm_fault_wire(fffffd806c4673f0,200000020000,200000031000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1706 uvm_vslock_device(ffff8000ffffc7d0,200000020140,10000,3,ffff800038bd0ae8) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff81616240,d02,8000,ffffffff81616a90,ffff800038bd0e40) at physio+0x257 sys/kern/kern_physio.c:139 spec_read(ffff800038bd0c20) at spec_read+0x14b sys/kern/spec_vnops.c:215 VOP_READ(fffffd805f18f700,ffff800038bd0e40,0,fffffd80097fd2d8) at VOP_READ+0x101 sys/kern/vfs_vops.c:227 vn_read(fffffd8063656e20,ffff800038bd0e40,1) at vn_read+0x17b sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000ffffc7d0,3,ffff800038bd0e40,1,ffff800038bd0f00) at dofilereadv+0x25a sys/kern/sys_generic.c:252 sys_preadv(ffff8000ffffc7d0,ffff800038bd0fb0,ffff800038bd0f00) at sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3366 syscall(ffff800038bd0fb0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038bd0fb0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xda3efdc5ea0, count: 2 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault_unwire_locked: address not in map ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8349825c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c4673f0,200000020000,20000002e000) at uvm_fault_unwire_locked+0x4be uvm_fault_wire(fffffd806c4673f0,200000020000,200000031000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1724 [inline] uvm_fault_wire(fffffd806c4673f0,200000020000,200000031000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1706 uvm_vslock_device(ffff8000ffffc7d0,200000020140,10000,3,ffff800038bd0ae8) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff81616240,d02,8000,ffffffff81616a90,ffff800038bd0e40) at physio+0x257 sys/kern/kern_physio.c:139 spec_read(ffff800038bd0c20) at spec_read+0x14b sys/kern/spec_vnops.c:215 VOP_READ(fffffd805f18f700,ffff800038bd0e40,0,fffffd80097fd2d8) at VOP_READ+0x101 sys/kern/vfs_vops.c:227 vn_read(fffffd8063656e20,ffff800038bd0e40,1) at vn_read+0x17b sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000ffffc7d0,3,ffff800038bd0e40,1,ffff800038bd0f00) at dofilereadv+0x25a sys/kern/sys_generic.c:252 sys_preadv(ffff8000ffffc7d0,ffff800038bd0fb0,ffff800038bd0f00) at sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3366 syscall(ffff800038bd0fb0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038bd0fb0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xda3efdc5ea0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800038bd0830 rbx 0xffff8000299bee07 rdx 0 rcx 0xffff8000ffffc7d0 rax 0xffff8000299bdff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe2ef8d17f3499c94 r11 0x7ddd3ac46607a9a7 r12 0xffff8000299bec08 r13 0 r14 0 r15 0x1 rip 0xffffffff81487395 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800038bd0820 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=501000 pid=59852 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffee2b0,0xffff8000fffee7f0 process=0xffff80003c3fb9e0 user=0xffff800038bcc000, vmspace=0xfffffd806c4673f0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 47857 43376 19556 0 3 0x80 nanoslp syz-executor 47857 225331 19556 0 3 0x4000080 fsleep syz-executor 59852 16148 37115 0 3 0 vmmaplk syz-executor *59852 501000 37115 0 7 0x4000000 syz-executor 59852 204344 37115 0 3 0x4000080 fsleep syz-executor 67722 352066 65474 0 2 0 syz-executor 67722 121745 65474 0 7 0x4000000 syz-executor 67722 471512 65474 0 3 0x4000080 fsleep syz-executor 51801 284847 7950 0 3 0x80 nanoslp syz-executor 51801 82005 7950 0 3 0x4000080 bpf syz-executor 51801 315012 7950 0 3 0x4000080 fsleep syz-executor 41328 462968 18578 0 3 0x80 nanoslp syz-executor 41328 87658 18578 0 3 0x4000080 netcon syz-executor 41328 261734 18578 0 3 0x4000080 fsleep syz-executor 29810 487683 14403 0 3 0x80 nanoslp syz-executor 29810 301415 14403 0 3 0x4000080 sbwait syz-executor 29810 474470 14403 0 3 0x4000080 fsleep syz-executor 29810 111181 14403 0 3 0x4000080 fsleep syz-executor 65474 363831 7234 0 3 0x82 nanoslp syz-executor 28000 15348 1 0 3 0x82 nanoslp getty 19556 105305 7234 0 3 0x82 nanoslp syz-executor 47929 14855 7234 0 3 0x82 nanoslp syz-executor 7950 231413 7234 0 3 0x82 nanoslp syz-executor 37115 205896 7234 0 3 0x82 nanoslp syz-executor 18578 324915 7234 0 3 0x82 nanoslp syz-executor 48052 4570 7234 0 3 0x2 biowait syz-executor 14403 89664 7234 0 3 0x82 nanoslp syz-executor 7234 467399 1 0 3 0x82 kqread syz-executor 30850 65193 0 0 3 0x14200 bored smr 42007 477254 0 0 3 0x14200