uvm_fault(0xffffffff83949d90, 0xffff800029d9uvm_fault(0xffffffff83949d90, 0xffff800029ef6000, 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
*428545  40955      0         0x2        0x1    0  syz-executor
kcov_remote_enter(0,ffff80002a778910) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff838b5960,ffff80002a789800) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a789800,0) 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
cnputc(39) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(39) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff833bd8d9) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff8347db42) at fault+0xa3 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff80002a8b4d80,ffff800029d9535f) at kpageflttrap+0x353 sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff80002a8b4d80) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
end trace frame: 0xffff80002a8b4e00, count: 0
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>