uvm_fault(0xffffffff82d88e40, 0xffffffff8c225000, 0, 1) -> e kernel: page fault trap, code=0 Stopped at softclock_process_kclock_timeout+0x3e: movq timeout_kclock(%r15),%r13 TID PID UID PRFLAGS PFLAGS CPU COMMAND 150487 76516 0 0x2 0 1 syz-executor.2 softclock_process_kclock_timeout(fffffd80635bff00,0) at softclock_process_kclock_timeout+0x3e sys/kern/kern_timeout.c:676 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:754 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82b8aff0) at sched_idle+0x41e sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 9 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.