panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0xa: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 66401 29849 0 0 0x4000000 0K syz-executor0 201750 75358 0 0 0 1 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(ffffff007f124d68,5,ffffff0072887b40) at uvm_fault_unwire_locked+0x270 uvm_map_pageable_wire(4000,ffffff007f124d68,0,ffff8000211b5328,1,ffffff0072887b40) at uvm_map_pageable_wire+0x475 sys/uvm/uvm_map.c:2288 uvm_mmaplock(ffff8000210a3330,ffff8000210a32f8,ffffff0068828b50,1,7) at uvm_mmaplock+0x119 sys/uvm/uvm_mmap.c:999 sys_mmap(c50,ffff8000210a32d8,0) at sys_mmap+0x8ea sys/uvm/uvm_mmap.c:534 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,ffffffffffffffa3,0,7,bba0010) at Xsyscall+0x128 end of kernel end trace frame: 0x23fa13630, 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. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> show panic uvm_fault_unwire_locked: address not in map ddb{0}> 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(ffffff007f124d68,5,ffffff0072887b40) at uvm_fault_unwire_locked+0x270 uvm_map_pageable_wire(4000,ffffff007f124d68,0,ffff8000211b5328,1,ffffff0072887b40) at uvm_map_pageable_wire+0x475 sys/uvm/uvm_map.c:2288 uvm_mmaplock(ffff8000210a3330,ffff8000210a32f8,ffffff0068828b50,1,7) at uvm_mmaplock+0x119 sys/uvm/uvm_mmap.c:999 sys_mmap(c50,ffff8000210a32d8,0) at sys_mmap+0x8ea sys/uvm/uvm_mmap.c:534 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,ffffffffffffffa3,0,7,bba0010) at Xsyscall+0x128 end of kernel end trace frame: 0x23fa13630, count: -8 ddb{0}> show registers rdi 0xffffffff81e26140 kprintf_mutex rsi 0xffffffff81a15189 db_enter+0x9 rbp 0xffff8000211b5090 rbx 0xffff8000211b5130 rdx 0xffff800000ad6000 rcx 0x1732 __ALIGN_SIZE+0x732 rax 0xffff800000ad6000 r8 0xffff8000211b5060 r9 0 r10 0 r11 0xffffffff819679e0 x86_bus_space_io_read_1 r12 0x3000000008 r13 0xffff8000211b50a0 r14 0x100 r15 0xffffffff81c656ff cy_pio_rec+0x143fc rip 0xffffffff81a1518a db_enter+0xa cs 0x8 rflags 0x202 rsp 0xffff8000211b5090 ss 0x10 db_enter+0xa: popq %rbp ddb{0}> show proc PROC (syz-executor0) pid=66401 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000210a39e0,0xffffffff81ee86d8 process=0xffff8000210b7958 user=0xffff8000211b0000, vmspace=0xffffff007f124d68 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 29849 122842 48595 0 2 0 syz-executor0 *29849 66401 48595 0 7 0x4000000 syz-executor0 75358 201750 42488 0 7 0 syz-executor1 75358 19778 42488 0 2 0x4000000 syz-executor1 34509 282938 1 0 3 0x100083 ttyin getty 57829 345703 0 0 3 0x14200 bored sosplice 42488 379256 72565 0 3 0x82 nanosleep syz-executor1 48595 276537 72565 0 3 0x82 nanosleep syz-executor0 72565 169178 51269 0 3 0x82 thrsleep syz-fuzzer 72565 481918 51269 0 3 0x4000082 thrsleep syz-fuzzer 72565 222274 51269 0 3 0x4000082 thrsleep syz-fuzzer 72565 331415 51269 0 3 0x4000082 kqread syz-fuzzer 72565 241032 51269 0 3 0x4000082 thrsleep syz-fuzzer 72565 445180 51269 0 3 0x4000082 thrsleep syz-fuzzer 72565 406006 51269 0 3 0x4000082 thrsleep syz-fuzzer 72565 356308 51269 0 3 0x4000082 thrsleep syz-fuzzer 72565 318311 51269 0 3 0x4000082 thrsleep syz-fuzzer 72565 454234 51269 0 3 0x4000082 thrsleep syz-fuzzer 51269 509202 98932 0 3 0x10008a pause ksh 98932 366903 80532 0 3 0x92 select sshd 80532 521571 1 0 3 0x80 select sshd 27179 278932 80132 73 3 0x100090 kqread syslogd 80132 333979 1 0 3 0x100082 netio syslogd 43347 262091 1 77 3 0x100090 poll dhclient 84467 178857 1 0 3 0x80 poll dhclient 94373 59021 0 0 2 0x14200 zerothread 80912 330130 0 0 3 0x14200 aiodoned aiodoned 1258 1818 0 0 3 0x14200 syncer update 40742 420228 0 0 3 0x14200 cleaner cleaner 47906 452034 0 0 3 0x14200 reaper reaper 52373 90474 0 0 3 0x14200 pgdaemon pagedaemon 87282 451139 0 0 3 0x14200 bored crynlk 67461 382153 0 0 3 0x14200 bored crypto 45765 451425 0 0 3 0x40014200 acpi0 acpi0 57479 443162 0 0 3 0x40014200 idle1 93990 106591 0 0 3 0x14200 bored softnet 87761 359020 0 0 3 0x14200 bored systqmp 23608 368504 0 0 3 0x14200 bored systq 67776 263728 0 0 3 0x40014200 bored softclock 87591 257579 0 0 3 0x40014200 idle0 1 163240 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper