uvm_fault(0xffffffff82d1e840, 0x444, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pf_purge_expired_states+0x187: movl 0x444(%r14,%rbx,4),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND *243657 87522 0 0x14000 0x200 0 systqmp pf_purge_expired_states(40,40) at pf_purge_expired_states+0x187 pf_state_expires sys/net/pf.c:1704 [inline] pf_purge_expired_states(40,40) at pf_purge_expired_states+0x187 sys/net/pf.c:1922 pf_purge_states(0) at pf_purge_states+0x3e sys/net/pf.c:1630 taskq_thread(ffffffff82b6e310) at taskq_thread+0xe5 sys/kern/kern_task.c:450 end trace frame: 0x0, count: 12 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.