uvm_fault(0xfffffd806abf2c60, 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 *276677 94042 0 0 0x4000000 1K syz-executor 185232 70954 0 0 0x4000000 0 syz-executor ktrops(ffff8000ffffd450,ffffffffffffffff,0,80000310,fffffd806bc27518,fffffd807f7d33a8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff8000ffffd450,ffffffffffffffff,0,80000310,fffffd806bc27518,fffffd807f7d33a8) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd806bc27518,4,310,0,ffff8000ffffd450) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806bc27518,4,310,0,ffff8000ffffd450) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff8000ffffd450,ffff800031586e50,ffff800031586da0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff800031586e50) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800031586e50) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6a41f7fcda0, 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.