uvm_fault(0xfffffd807c8e8770, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at socreate+0x7b: cmpq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND *290067 15498 0 0 0x4000000 0 syz-executor.1 socreate(18,ffff800023ac32f8,3,3c) at socreate+0x7b sys/kern/uipc_socket.c:172 sys_socket(ffff800024b0a7f0,ffff800023ac3388,ffff800023ac33e0) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800023ac3450) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6dc868a8b00, 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.