panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0xa: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *366479 42080 0 0 0x4000000 0 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(20002000,20004000,0) at uvm_fault_unwire_locked+0x270 uvm_fault_unwire(1000,ffffff003cd6de00,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff800014abbe78,ffffff0027962a38,ffffff0027962a38,ffff800014abbe78,ffff800014abbd48) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0x9d sys/kern/spec_vnops.c:223 VOP_READ(ffff800014abbe78,ffffff0027962a38,ffffff0037690ac8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247 vn_read(ffffff0037690ac8,ffff8000ffffae28,2088) at vn_read+0x130 sys/kern/vfs_vnops.c:365 dofilereadv(0,3,ffff8000ffffae28,ffff800014abbfa0,ffff800014abbfb8) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(ffff800014abc040,ffff8000ffffae28,ffff8000149ff670) at sys_readv+0xce sys/kern/sys_generic.c:182 syscall(0) at syscall+0x3e4 Xsyscall(6,0,ffffffffffffffbc,0,3,62a0b6a010) at Xsyscall+0x128 end of kernel end trace frame: 0x64b331cae0, 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> ddb> set $lines = 0 ddb> show panic uvm_fault_unwire_locked: address not in map ddb> 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(20002000,20004000,0) at uvm_fault_unwire_locked+0x270 uvm_fault_unwire(1000,ffffff003cd6de00,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff800014abbe78,ffffff0027962a38,ffffff0027962a38,ffff800014abbe78,ffff800014abbd48) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0x9d sys/kern/spec_vnops.c:223 VOP_READ(ffff800014abbe78,ffffff0027962a38,ffffff0037690ac8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247vn_read(ffffff0037690ac8,ffff8000ffffae28,2088) at vn_read+0x130 dofilereadv(0,3,ffff8000ffffae28,ffff800014abbfa0,ffff800014abbfb8) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(ffff800014abc040,ffff8000ffffae28,ffff8000149ff670) at sys_readv+0xce sys/kern/sys_generic.c:182syscall(0) at syscall+0x3e4 Xsyscall(6,0,ffffffffffffffbc,0,3,62a0b6a010) at Xsyscall+0x128 end of kernel end trace frame: 0x64b331cae0, count: -12 ddb> show registers rdi 0xffffffff81e39300 kprintf_mutex rsi 0xffffffff81804899 db_enter+0x9 rbp 0xffff800014abbaf0 rbx 0xffff800014abbb90 rdx 0xffff800000ccb000 rcx 0x1d70 __ALIGN_SIZE+0xd70 rax 0xffff800000ccb000 r8 0xffff800014abbac0 r9 0 r10 0 r11 0xffffffff81782140 x86_bus_space_io_read_1 r12 0x3000000008 r13 0xffff800014abbb00 r14 0x100 r15 0xffffffff81c4e8c8 cy_pio_rec+0x1406c rip 0xffffffff8180489a db_enter+0xa cs 0x8 rflags 0x212 rsp 0xffff800014abbaf0 ss 0x10 db_enter+0xa: popq %rbp ddb> show proc PROC (syz-executor0) pid=366479 stat=onproc flags process=0 proc=4000000 pri=17, usrpri=69, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffa270,0xffff8000ffffabe0 process=0xffff8000149ff670 user=0xffff800014ab7000, vmspace=0xffffff002a69c220 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 67768 123794 46967 0 2 0 syz-executor1 67768 399411 46967 0 2 0x4000000 syz-executor1 42080 446070 98735 0 2 0x480 syz-executor0 *42080 366479 98735 0 7 0x4000000 syz-executor0 42080 267221 98735 0 3 0x4000080 fsleep syz-executor0 98735 369348 32032 0 2 0x482 syz-executor0 46967 521687 32032 0 2 0x482 syz-executor1 9580 181865 1 0 3 0x100083 ttyin getty 58979 413507 0 0 3 0x14200 bored sosplice 32032 442921 92645 0 3 0x82 thrsleep syz-fuzzer 32032 54978 92645 0 3 0x4000082 thrsleep syz-fuzzer 32032 445045 92645 0 3 0x4000082 thrsleep syz-fuzzer 32032 125714 92645 0 3 0x4000082 kqread syz-fuzzer 32032 255244 92645 0 3 0x4000082 thrsleep syz-fuzzer 32032 400176 92645 0 3 0x4000082 thrsleep syz-fuzzer 32032 504079 92645 0 3 0x4000082 thrsleep syz-fuzzer 92645 183701 58869 0 3 0x10008a pause ksh 58869 120384 28359 0 3 0x92 select sshd 28359 239862 1 0 3 0x80 select sshd 96685 257289 32051 73 3 0x100090 kqread syslogd 32051 487420 1 0 3 0x100082 netio syslogd 785 389543 0 0 2 0x14200 zerothread 91897 236609 0 0 3 0x14200 aiodoned aiodoned 59160 255847 0 0 3 0x14200 syncer update 45516 272610 0 0 3 0x14200 cleaner cleaner 36590 192604 0 0 3 0x14200 reaper reaper 36708 253994 0 0 3 0x14200 pgdaemon pagedaemon 73015 291013 0 0 3 0x14200 bored crynlk 4907 199105 0 0 3 0x14200 bored crypto 86565 511565 0 0 3 0x40014200 acpi0 acpi0 15584 87040 0 0 3 0x14200 bored softnet 79577 104164 0 0 3 0x14200 bored systqmp 94422 345206 0 0 3 0x14200 bored systq 58670 233981 0 0 3 0x40014200 bored softclock 39861 20126 0 0 3 0x40014200 idle0 1 16938 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper