uvm_fault(0xfffffd806c8e45d0, 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 *521749 3762 0 0x1 0x4000000 1 syz-executor 38593 99466 0 0x14000 0x200 0 zerothread ktrops(ffff80002a243c98,ffffffffffffffff,0,80001010,fffffd805fedde60,fffffd80097fd0d0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a243c98,ffffffffffffffff,0,80001010,fffffd805fedde60,fffffd80097fd0d0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805fedde60,4,1010,0,ffff80002a243c98) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805fedde60,4,1010,0,ffff80002a243c98) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a243c98,ffff80002a29bf70,ffff80002a29bec0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80002a29bf70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a29bf70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x64eacbc3320, 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{1}> ddb{1}>