uvm_fault(0xffffffff83a0a918, 0xffff80001fbe2600, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memcpy+0x19: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND memcpy() at memcpy+0x19 ufs_inactive(ffff80002a781020) at ufs_inactive+0x2de sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffff7806e970618,ffff80002a760018) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vrele(fffff7806e970618) at vrele+0x120 sys/kern/vfs_subr.c:837 fdfree(ffff80002a760018) at fdfree+0x286 sys/kern/kern_descrip.c:1216 exit1(ffff80002a760018,1,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a760018,ffff80002a781290,ffff80002a7811e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a781290) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a781290) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a64d166a750, count: 6 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> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff83a0a918, 0xffff80001fbe2600, 0, 2) -> d ddb> trace memcpy() at memcpy+0x19 ufs_inactive(ffff80002a781020) at ufs_inactive+0x2de sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffff7806e970618,ffff80002a760018) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vrele(fffff7806e970618) at vrele+0x120 sys/kern/vfs_subr.c:837 fdfree(ffff80002a760018) at fdfree+0x286 sys/kern/kern_descrip.c:1216 exit1(ffff80002a760018,1,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a760018,ffff80002a781290,ffff80002a7811e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a781290) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a781290) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a64d166a750, count: -9 ddb> show registers rdi 0xffff80001fbe2600 rsi 0xfffff7806ee7a500 rbp 0xffff80002a780fb0 rbx 0xffff80001fbe2600 rdx 0x100 rcx 0x20 rax 0xffff80002a760018 r8 0xffffffffffffffff r9 0x32a00 acpi_pdirpa+0x1e871 r10 0x8e1d48397c6d77b4 r11 0xffff80001fbe2600 r12 0x600 r13 0x2 r14 0 r15 0xfffff7806cc67000 rip 0xffffffff823bdca9 memcpy+0x19 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a780f48 ss 0x10 memcpy+0x19: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syz-executor) tid=400920 pid=39295 tcnt=0 stat=onproc flags process=a proc=2000 runpri=32, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a761ca0,0xffff8000314a22c8 process=0xffff8000314a4d98 user=0xffff80002a77c000, vmspace=0xfffff78075d47458 estcpu=31, cpticks=5, pctcpu=0.3, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 518 236589 0 0 3 0x14280 nfsidl nfsio 12886 73359 0 0 3 0x14280 nfsidl nfsio 76134 165896 0 0 3 0x14280 nfsidl nfsio 40284 132138 0 0 3 0x14280 nfsidl nfsio 57976 333915 0 0 3 0x14280 nfsidl nfsio 27505 212129 0 0 3 0x14280 nfsidl nfsio 52042 96624 0 0 3 0x14280 nfsidl nfsio 18139 272217 0 0 3 0x14280 nfsidl nfsio 88380 143318 0 0 3 0x14280 nfsidl nfsio 44497 494577 0 0 3 0x14280 nfsidl nfsio 65758 485315 0 0 3 0x14280 nfsidl nfsio 51557 166195 0 0 3 0x14280 nfsidl nfsio 13986 298538 0 0 3 0x14280 nfsidl nfsio 57931 302049 0 0 3 0x14280 nfsidl nfsio 79912 395196 0 0 3 0x14280 nfsidl nfsio 95778 198737 0 0 3 0x14280 nfsidl nfsio 29709 170873 0 0 3 0x14280 nfsidl nfsio 14314 100501 0 0 3 0x14280 nfsidl nfsio 87950 412837 0 0 3 0x14280 nfsidl nfsio 31600 373675 0 0 3 0x14280 nfsidl nfsio 77359 423919 1 0 3 0x82 nanoslp getty 42176 34076 1 0 3 0x82 wait syz-executor 2720 347188 0 0 3 0x14200 bored smr 94939 278771 0 0 2 0x14200 zerothread 66746 60818 0 0 3 0x14200 aiodoned aiodoned 42872 385839 0 0 3 0x14200 syncer update 61767 215878 0 0 3 0x14200 cleaner cleaner 69001 263856 0 0 3 0x14200 reaper reaper 63671 183983 0 0 3 0x14200 pgdaemon pagedaemon 995 429021 0 0 3 0x14200 bored viomb 7816 188006 0 0 3 0x40014200 acpi0 acpi0 89891 257159 0 0 3 0x14200 bored softnet0 41463 46647 0 0 3 0x14200 smrbar systqmp 12595 264388 0 0 3 0x14200 bored systq 57067 361176 0 0 3 0x40014200 tmoslp softclock 31848 156097 0 0 3 0x40014200 idle0 1 208334 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb>