uvm_fault(0xfffffd806ce10c20, 0x7, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x58: movq 0x8(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *354359 90451 0 0x8001000 0x4080000 0K syz-executor 465509 10117 0 0x14000 0x200 1 reaper ktrops(ffff800037295710,ffffffffffffffff,0,a0c7df9b,fffffd80590542e8,fffffd807f7d34e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff800037295710,ffffffffffffffff,0,a0c7df9b,fffffd80590542e8,fffffd807f7d34e0) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd80590542e8,4,20c7df9b,0,ffff800037295710) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80590542e8,4,20c7df9b,0,ffff800037295710) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff800037295710,ffff8000372b9ec0,ffff8000372b9e10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff8000372b9ec0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000372b9ec0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf65f049ac40, 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.