uvm_fault(0xfffffd8069b566c8, 0x1225c81e20, 0, 1) -> e kernel: page fault trap, code=0 Stopped at softclock_process_kclock_timeout+0x3a: movq timeout_kclock(%r15),%r13 TID PID UID PRFLAGS PFLAGS CPU COMMAND *193832 8416 0 0 0 0 syz-executor.4 softclock_process_kclock_timeout(fffffd80655f9f00,0) at softclock_process_kclock_timeout+0x3a sys/kern/kern_timeout.c:652 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:717 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffe4960, 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.