panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0xa: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *116599 56190 0 0 0x4000000 0K syz-executor8783 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,ffffff006d062100,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff80002112b868,ffffff006d119ae0,ffffff006d119ae0,ffff80002112b868,ffff80002112b738) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0xa5 sys/kern/spec_vnops.c:223 VOP_READ(ffff80002112b868,ffffff006d119ae0,ffffff006e4905a8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247 vn_read(ffffff006e4905a8,ffff800021084710,1000) at vn_read+0x130 sys/kern/vfs_vnops.c:365 dofilereadv(0,1,ffff800021084710,ffff80002112b990,ffff80002112b9a8) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(780,ffff800021084710,0) 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,c58629d2aa0,0,c55ff38c0a8,c55ff38c0a0) at Xsyscall+0x128 end of kernel end trace frame: 0xc585d4b0a30, 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{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(20001000,20003000,0) at uvm_fault_unwire_locked+0x270 uvm_fault_unwire(1000,ffffff006d062100,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff80002112b868,ffffff006d119ae0,ffffff006d119ae0,ffff80002112b868,ffff80002112b738) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0xa5 sys/kern/spec_vnops.c:223 VOP_READ(ffff80002112b868,ffffff006d119ae0,ffffff006e4905a8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247vn_read(ffffff006e4905a8,ffff800021084710,1000) at vn_read+0x130 dofilereadv(0,1,ffff800021084710,ffff80002112b990,ffff80002112b9a8) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(780,ffff800021084710,0) 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,c58629d2aa0,0,c55ff38c0a8,c55ff38c0a0) at Xsyscall+0x128 end of kernel end trace frame: 0xc585d4b0a30, count: -12 ddb{0}> show registers rdi 0xffffffff81e20110 kprintf_mutex rsi 0x5 rbp 0xffff80002112b4e0 rbx 0xffff80002112b580 rdx 0x3fd rcx 0 rax 0x1 r8 0xffff80002112b4b0 r9 0 r10 0 r11 0xffffffff8197d380 x86_bus_space_io_read_1 r12 0x3000000008 r13 0xffff80002112b4f0 r14 0x100 r15 0xffffffff81c64515 cy_pio_rec+0x10dfa rip 0xffffffff8182d81a db_enter+0xa cs 0x8 rflags 0x202 rsp 0xffff80002112b4e0 ss 0x10 db_enter+0xa: popq %rbp ddb{0}> show proc PROC (syz-executor8783) pid=116599 stat=onproc flags process=0 proc=4000000 pri=17, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800021084008,0xffff8000210852d8 process=0xffff800021070ca8 user=0xffff800021126000, vmspace=0xffffff007f124420 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56190 70238 89960 0 3 0x80 nanosleep syz-executor8783 *56190 116599 89960 0 7 0x4000000 syz-executor8783 56190 2668 89960 0 3 0x4000080 fsleep syz-executor8783 89960 233048 98433 0 3 0x80 nanosleep syz-executor8783 51302 400320 98433 0 3 0x80 nanosleep syz-executor8783 98433 448484 73670 0 3 0x82 nanosleep syz-executor8783 73670 391063 13489 0 3 0x10008a pause ksh 13489 180989 69079 0 3 0x92 select sshd 34280 272430 1 0 3 0x100083 ttyin getty 69079 214264 1 0 3 0x80 select sshd 14516 401541 34680 73 3 0x100090 kqread syslogd 34680 129302 1 0 3 0x100082 netio syslogd 98833 220905 1 77 3 0x100090 poll dhclient 92523 53992 1 0 3 0x80 poll dhclient 19296 57917 0 0 3 0x14200 pgzero zerothread 55778 84655 0 0 3 0x14200 aiodoned aiodoned 56102 424379 0 0 3 0x14200 syncer update 57562 136865 0 0 3 0x14200 cleaner cleaner 91419 373635 0 0 3 0x14200 reaper reaper 48262 501715 0 0 3 0x14200 pgdaemon pagedaemon 21730 320485 0 0 3 0x14200 bored crynlk 65963 476355 0 0 3 0x14200 bored crypto 31733 400906 0 0 3 0x40014200 acpi0 acpi0 41000 13681 0 0 7 0x40014200 idle1 43578 74494 0 0 3 0x14200 bored softnet 32914 50734 0 0 3 0x14200 bored systqmp 19023 68977 0 0 3 0x14200 bored systq 66780 392577 0 0 3 0x40014200 bored softclock 70297 227767 0 0 3 0x40014200 idle0 1 314882 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper