uvm_fault(0xfffffd8069022720, 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 380065 64993 0 0 0 0 syz-executor *512409 91779 0 0x1000 0x4080000 1K syz-executor ktrops(ffff80002a12acd0,ffffffffffffffff,0,a0c7df9b,fffffd8067b06480,fffffd807f7d34e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a12acd0,ffffffffffffffff,0,a0c7df9b,fffffd8067b06480,fffffd807f7d34e0) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd8067b06480,4,20c7df9b,0,ffff80002a12acd0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8067b06480,4,20c7df9b,0,ffff80002a12acd0) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a12acd0,ffff8000371f6b90,ffff8000371f6ae0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff8000371f6b90) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371f6b90) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe8a4dc7bac0, 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.