epanic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0xa: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *508555 26337 0 0 0x4000000 1K syz-executor0 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,ffffff0063c03200,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff80002119b8e8,ffffff007d9eac50,ffffff007d9eac50,ffff80002119b8e8,ffff80002119b7b8) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0xa5 sys/kern/spec_vnops.c:223 VOP_READ(ffff80002119b8e8,ffffff007d9eac50,ffffff006823ccb8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247 vn_read(ffffff006823ccb8,ffff8000210a2720,1000) at vn_read+0x130 sys/kern/vfs_vnops.c:365 dofilereadv(0,1,ffff8000210a2720,ffff80002119ba10,ffff80002119ba28) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(780,ffff8000210a2720,0) at sys_readv+0xce sys/kern/sys_generic.c:182 syscall(0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,ffffffffffffffbc,0,3,42ab5052010) at Xsyscall+0x128 end of kernel end trace frame: 0x42da186cf60, 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. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> show panic uvm_fault_unwire_locked: address not in map ddb{1}> trace 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,ffffff0063c03200,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff80002119b8e8,ffffff007d9eac50,ffffff007d9eac50,ffff80002119b8e8,ffff80002119b7b8) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0xa5 sys/kern/spec_vnops.c:223 VOP_READ(ffff80002119b8e8,ffffff007d9eac50,ffffff006823ccb8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247vn_read(ffffff006823ccb8,ffff8000210a2720,1000) at vn_read+0x130 dofilereadv(0,1,ffff8000210a2720,ffff80002119ba10,ffff80002119ba28) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(780,ffff8000210a2720,0) at sys_readv+0xce sys/kern/sys_generic.c:182 syscall(0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,ffffffffffffffbc,0,3,42ab5052010) at Xsyscall+0x128 end of kernel end trace frame: 0x42da186cf60, count: -12 ddb{1}> show registers rdi 0xffffffff81e3e438 kprintf_mutex rsi 0xffffffff817b9589 db_enter+0x9 rbp 0xffff80002119b560 rbx 0xffff80002119b600 rdx 0xffff800000ad6000 rcx 0x1d09 __ALIGN_SIZE+0xd09 rax 0xffff800000ad6000 r8 0xffff80002119b530 r9 0 r10 0 r11 0xffffffff81780d60 x86_bus_space_io_read_1 r12 0x3000000008 r13 0xffff80002119b570 r14 0x100 r15 0xffffffff81c66154 cy_pio_rec+0x167f5 rip 0xffffffff817b958a db_enter+0xa cs 0x8 rflags 0x206 rsp 0xffff80002119b560 ss 0x10 db_enter+0xa: popq %rbp ddb{1}> show proc PROC (syz-executor0) pid=508555 stat=onproc flags process=0 proc=4000000 pri=17, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff8000210a39e0,0xffff8000210a24d8 process=0xffff8000210b6028 user=0xffff800021196000, vmspace=0xffffff007f124108 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26337 49087 96729 0 3 0x80 nanosleep syz-executor0 *26337 508555 96729 0 7 0x4000000 syz-executor0 26337 469588 96729 0 3 0x4000080 fsleep syz-executor0 62148 188408 1 0 3 0x100083 ttyin getty 14829 59124 0 0 3 0x14200 bored sosplice 15349 285895 32744 0 3 0x2 biowait syz-executor1 96729 22815 32744 0 3 0x82 nanosleep syz-executor0 32744 518216 63375 0 3 0x82 thrsleep syz-fuzzer 32744 437647 63375 0 3 0x4000082 nanosleep syz-fuzzer 32744 422468 63375 0 3 0x4000082 thrsleep syz-fuzzer 32744 41994 63375 0 3 0x4000082 thrsleep syz-fuzzer 32744 162458 63375 0 3 0x4000082 thrsleep syz-fuzzer 32744 444027 63375 0 3 0x4000082 thrsleep syz-fuzzer 32744 376498 63375 0 3 0x4000082 thrsleep syz-fuzzer 32744 254794 63375 0 3 0x4000082 kqread syz-fuzzer 32744 44425 63375 0 3 0x4000082 thrsleep syz-fuzzer 32744 91858 63375 0 3 0x4000082 thrsleep syz-fuzzer 63375 397836 39288 0 3 0x10008a pause ksh 39288 291919 89470 0 3 0x92 select sshd 89470 438888 1 0 3 0x80 select sshd 20069 80100 4604 73 3 0x100090 kqread syslogd 4604 289454 1 0 3 0x100082 netio syslogd 92063 161578 1 77 3 0x100090 poll dhclient 96592 298811 1 0 3 0x80 poll dhclient 63266 301871 0 0 3 0x14200 pgzero zerothread 26469 423795 0 0 3 0x14200 aiodoned aiodoned 73550 444692 0 0 3 0x14200 syncer update 76686 172314 0 0 3 0x14200 cleaner cleaner 4268 459324 0 0 3 0x14200 reaper reaper 55780 235117 0 0 3 0x14200 pgdaemon pagedaemon 52877 205856 0 0 3 0x14200 bored crynlk 74931 219342 0 0 3 0x14200 bored crypto 92344 514660 0 0 3 0x40014200 acpi0 acpi0 80576 255547 0 0 3 0x40014200 idle1 46434 50365 0 0 3 0x14200 bored softnet 4861 446172 0 0 3 0x14200 bored systqmp 76884 332968 0 0 3 0x14200 bored systq 86602 323398 0 0 3 0x40014200 bored softclock 56092 398316 0 0 7 0x40014200 idle0 1 202929 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper