uvm_fault(0xffffffff83a039a8, 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
*292160  57359      0           0          0    0  syz-executor
kcov_remote_enter(0,ffff80002a79d690) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff83958690,ffff80002a736d98) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a736d98,0) 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
__sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x31 sys/dev/kcov.c:-1
vm_map_lock_read_ln(fffffb006d1515d0,ffffffff834f2989,754) at vm_map_lock_read_ln+0x32 sys/uvm/uvm_map.c:5196
uvmfault_lookup(ffff80003c8e1a10,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
uvm_fault_check(ffff80003c8e1a10,ffff80003c8e1a48,ffff80003c8e1a80,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
uvm_fault(fffffb006d1515d0,b949d043000,0,1) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80003c8e1bb0,b949d043000) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c8e1bb0) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:640
end trace frame: 0xffff80003c8e1c30, 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>