uvm_fault(0xfffffd8074ad72b8, 0xf, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      ktrops+0x58:    movq    0x10(%r14),%r14
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*491231  54555      0   0x8000000  0x4000000    0  syz-executor
ktrops(ffff80002edda2a8,ffffffffffffffff,0,a0c7df9b,fffffd8078f14970,fffffd807f7d7478) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline]
ktrops(ffff80002edda2a8,ffffffffffffffff,0,a0c7df9b,fffffd8078f14970,fffffd807f7d7478) at ktrops+0x58 sys/kern/kern_ktrace.c:561
doktrace(fffffd8078f14970,4,20c7df9b,0,ffff80002edda2a8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline]
doktrace(fffffd8078f14970,4,20c7df9b,0,ffff80002edda2a8) at doktrace+0x6dd sys/kern/kern_ktrace.c:508
sys_ktrace(ffff80002edda2a8,ffff80002a587210,ffff80002a587160) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549
syscall(ffff80002a587210) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe3a7b68f500, count: 10
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.