¹j¼õ¬|ÿ ž¨E1\…:*ýuvm_fault(0xffffffff839d8080, 0xffff800029ee6000, 0, 2) -> e kernel: page fault trap, code=2 Stopped at kcov_remote_enter+0x122: movq $0,0(%rcx) TID PID UID PRFLAGS PFLAGS CPU COMMAND * 20548 9964 0 0 0 0 syz-executor kcov_remote_enter(0,ffff80002a779f90) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff838be2a0,ffff80002a736338) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a736338,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 alltraps() at alltraps+0x135 end of kernel end trace frame: 0x7d445b2291b0, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff839d8080, 0xffff800029ee6000, 0, 2) -> e ddb> trace kcov_remote_enter(0,ffff80002a779f90) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff838be2a0,ffff80002a736338) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a736338,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 alltraps() at alltraps+0x135 end of kernel end trace frame: 0x7d445b2291b0, count: -8 ddb> show registers rdi 0xffffffff rsi 0xffff800000c16c00 rbp 0xffff80002a754f30 rbx 0xffff80002a779f90 rdx 0xffff80002a7707f0 rcx 0xffff800029ee6000 rax 0xfffffd806cabfd20 r8 0 r9 0 r10 0x7b4542d298e1ac83 r11 0xbc2c61e7a4cfbbcd r12 0xffffffff81f2f140 endtsleep r13 0xffff80002a7362a0 r14 0xffff80002a779f90 r15 0 rip 0xffffffff81e11702 kcov_remote_enter+0x122 cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff80002a754f10 ss 0 kcov_remote_enter+0x122: movq $0,0(%rcx) ddb>