uvm_fault(0xffffffff83a600b0, 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
*310424  42413      0           0  0x4000000    0  syz-executor
kcov_remote_enter(0,ffff80002f0af198) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff83952e90,ffff80002f0ab810) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002f0ab810,0) 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
writedisklabel(d02,ffffffff825d69c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158
sdioctl(d01,84946467,ffff800001583000,3,ffff80002f0ab248) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd806e81dc10,84946467,ffff800001583000,3,fffffd8007ffd958,ffff80002f0ab248) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806cacf960,84946467,ffff800001583000,ffff80002f0ab248) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80002f0ab248,ffff80002a7b1d90,ffff80002a7b1ce0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a7b1d90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a7b1d90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xee609d538b0, count: 1
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>