uvm_fault(0xfffffc006e1e8b80, 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 *196582 38962 0 0 0x4000000 0K syz-executor 291725 92074 0 0x2 0 1 syz-executor ktrops(ffff800045ffc538,ffffffffffffffff,0,a0c7df9f,fffffc0063c9e360,fffffc00097fd208) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff800045ffc538,ffffffffffffffff,0,a0c7df9f,fffffc0063c9e360,fffffc00097fd208) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffc0063c9e360,4,20c7df9f,0,ffff800045ffc538) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffc0063c9e360,4,20c7df9f,0,ffff800045ffc538) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff800045ffc538,ffff80003c403ee0,ffff80003c403e30) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c403ee0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c403ee0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78f1f16dff0, 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. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}>