uvm_fault(0xfffffd8008716e60, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at socreate+0x84: cmpq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND *295420 31974 0 0 0x4000000 0K syz-executor.5 458743 67351 0 0 0 1 syz-executor.6 socreate(18,ffff80002af2dfe8,3,2c) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff800027ade010,ffff80002af2e078,ffff80002af2e0d0) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002af2e140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002af2e140) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x29763259930, count: 11 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.