panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0xa: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *379965 28854 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,ffffff006e52a500,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff800021189248,ffffff0060443288,ffffff0060443288,ffff800021189248,ffff800021189118) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0xa5 sys/kern/spec_vnops.c:223 VOP_READ(ffff800021189248,ffffff0060443288,ffffff0067a6dbc8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247 vn_read(ffffff0067a6dbc8,ffff8000210a2e28,1000) at vn_read+0x130 sys/kern/vfs_vnops.c:365 dofilereadv(0,1,ffff8000210a2e28,ffff800021189370,ffff800021189388) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(780,ffff8000210a2e28,0) 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,0,3,90e96626010) at Xsyscall+0x128 end of kernel end trace frame: 0x91195f82f40, 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,ffffff006e52a500,1000) at uvm_fault_unwire+0x3b sys/uvm/uvm_fault.c:1314 physio(ffff800021189248,ffffff0060443288,ffffff0060443288,ffff800021189248,ffff800021189118) at physio+0x2ba sys/kern/kern_physio.c:183 spec_read(0) at spec_read+0xa5 sys/kern/spec_vnops.c:223 VOP_READ(ffff800021189248,ffffff0060443288,ffffff0067a6dbc8,0) at VOP_READ+0x5e sys/kern/vfs_vops.c:247vn_read(ffffff0067a6dbc8,ffff8000210a2e28,1000) at vn_read+0x130 dofilereadv(0,1,ffff8000210a2e28,ffff800021189370,ffff800021189388) at dofilereadv+0x14f sys/kern/sys_generic.c:235 sys_readv(780,ffff8000210a2e28,0) 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,0,3,90e96626010) at Xsyscall+0x128 end of kernel end trace frame: 0x91195f82f40, count: -12 ddb{1}> show registers rdi 0xffffffff81e20110 kprintf_mutex rsi 0xffffffff8182d819 db_enter+0x9 rbp 0xffff800021188ec0 rbx 0xffff800021188f60 rdx 0xffff800000ad7000 rcx 0x1c3a __ALIGN_SIZE+0xc3a rax 0xffff800000ad7000 r8 0xffff800021188e90 r9 0 r10 0 r11 0xffffffff8197d380 x86_bus_space_io_read_1 r12 0x3000000008 r13 0xffff800021188ed0 r14 0x100 r15 0xffffffff81c64515 cy_pio_rec+0x10dfa rip 0xffffffff8182d81a db_enter+0xa cs 0x8 rflags 0x206 rsp 0xffff800021188ec0 ss 0x10 db_enter+0xa: popq %rbp ddb{1}> show proc PROC (syz-executor0) pid=379965 stat=onproc flags process=0 proc=4000000 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000210a2018,0xffff8000210a39f0 process=0xffff8000210b7638 user=0xffff800021184000, vmspace=0xffffff007f124840 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28854 182730 98134 0 3 0x80 nanosleep syz-executor0 *28854 379965 98134 0 7 0x4000000 syz-executor0 28854 113818 98134 0 3 0x4000080 fsleep syz-executor0 96958 375472 1 0 3 0x100083 ttyin getty 61222 77741 0 0 3 0x14200 bored sosplice 51839 350389 17338 0 3 0x2 biowait syz-executor1 98134 496179 17338 0 3 0x82 nanosleep syz-executor0 17338 106987 26898 0 3 0x82 thrsleep syz-fuzzer 17338 374172 26898 0 3 0x4000082 nanosleep syz-fuzzer 17338 241616 26898 0 3 0x4000082 thrsleep syz-fuzzer 17338 232492 26898 0 3 0x4000082 thrsleep syz-fuzzer 17338 448981 26898 0 3 0x4000082 thrsleep syz-fuzzer 17338 523268 26898 0 3 0x4000082 thrsleep syz-fuzzer 17338 118746 26898 0 3 0x4000082 thrsleep syz-fuzzer 17338 26385 26898 0 3 0x4000082 thrsleep syz-fuzzer 17338 515263 26898 0 3 0x4000082 thrsleep syz-fuzzer 17338 118817 26898 0 3 0x4000082 kqread syz-fuzzer 26898 20601 12316 0 3 0x10008a pause ksh 12316 275934 71431 0 3 0x92 select sshd 71431 190158 1 0 3 0x80 select sshd 90852 165540 10788 73 3 0x100090 kqread syslogd 10788 456627 1 0 3 0x100082 netio syslogd 64623 141026 1 77 3 0x100090 poll dhclient 99353 458000 1 0 3 0x80 poll dhclient 1526 438486 0 0 3 0x14200 pgzero zerothread 6501 172557 0 0 3 0x14200 aiodoned aiodoned 79442 195491 0 0 3 0x14200 syncer update 75297 395861 0 0 3 0x14200 cleaner cleaner 54668 150016 0 0 3 0x14200 reaper reaper 11883 201195 0 0 3 0x14200 pgdaemon pagedaemon 10332 342742 0 0 3 0x14200 bored crynlk 64918 207478 0 0 3 0x14200 bored crypto 20560 271922 0 0 3 0x40014200 acpi0 acpi0 92835 512232 0 0 3 0x40014200 idle1 32641 233934 0 0 3 0x14200 bored softnet 61784 364356 0 0 3 0x14200 bored systqmp 29925 131288 0 0 3 0x14200 bored systq 99275 230774 0 0 3 0x40014200 bored softclock 96510 395798 0 0 7 0x40014200 idle0 1 219310 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper