uvm_fault(0xffffffff839dba20, 0xffff80001fe02a00, 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(ffff80003c4152e0) at ufs_inactive+0x2e1 sys/ufs/ufs/ufs_inode.c:95
VOP_INACTIVE(fffffd806786c8b8,ffff8000fffee7e0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vrele(fffffd806786c8b8) at vrele+0x129 sys/kern/vfs_subr.c:837
fdfree(ffff8000fffee7e0) at fdfree+0x286 sys/kern/kern_descrip.c:1216
exit1(ffff8000fffee7e0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff8000fffee7e0,ffff80003c415560,ffff80003c4154b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c415560) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c415560) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x797d8f040db0, 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{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff839dba20, 0xffff80001fe02a00, 0, 2) -> d
ddb{0}>