uvm_fault(0xfffff3806ce94d08, 0xf, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      ktrops+0x58:    movq    0x10(%r14),%r14
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*171647  49182      0           0  0x4000000    0  syz-executor
ktrops(ffff80002a766d08,ffffffffffffffff,0,80001930,fffff3806fb7a8b0,fffff38007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline]
ktrops(ffff80002a766d08,ffffffffffffffff,0,80001930,fffff3806fb7a8b0,fffff38007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571
doktrace(fffff3806fb7a8b0,4,1930,0,ffff80002a766d08) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
doktrace(fffff3806fb7a8b0,4,1930,0,ffff80002a766d08) at doktrace+0x6bd sys/kern/kern_ktrace.c:518
sys_ktrace(ffff80002a766d08,ffff80003c8edc70,ffff80003c8edbc0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559
syscall(ffff80003c8edc70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c8edc70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd102b396c30, count: 10
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(0xfffff3806ce94d08, 0xf, 0, 1) -> e
ddb> trace
ktrops(ffff80002a766d08,ffffffffffffffff,0,80001930,fffff3806fb7a8b0,fffff38007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline]
ktrops(ffff80002a766d08,ffffffffffffffff,0,80001930,fffff3806fb7a8b0,fffff38007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571
doktrace(fffff3806fb7a8b0,4,1930,0,ffff80002a766d08) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
doktrace(fffff3806fb7a8b0,4,1930,0,ffff80002a766d08) at doktrace+0x6bd sys/kern/kern_ktrace.c:518
sys_ktrace(ffff80002a766d08,ffff80003c8edc70,ffff80003c8edbc0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559
syscall(ffff80003c8edc70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c8edc70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd102b396c30, count: -5
ddb> show registers
rdi               0xffff80002ccaa000
rsi                           0x1169    __ALIGN_SIZE+0x169
rbp               0xffff80003c8ed990
rbx               0xfffff38007ffd6e8
rdx               0xffff80002ccaa000
rcx                           0x1168    __ALIGN_SIZE+0x168
rax               0xffffffff82bb4cd3    ktrops+0x43
r8                0xfffff3806fb7a8b0
r9                0xfffff38007ffd6e8
r10               0xb79d8fdd3f422951
r11               0x65692ae7c6e4c3bb
r12               0xffff80002a766d08
r13               0xffffffffffffffff
r14               0xffffffffffffffff
r15                       0x80001930    __kernel_virt_to_phys+0x1930
rip               0xffffffff82bb4ce8    ktrops+0x58
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff80003c8ed910
ss                                 0
ktrops+0x58:    movq    0x10(%r14),%r14
ddb> show proc
PROC (syz-executor) tid=171647 pid=49182 tcnt=2 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=17, usrpri=50, slppri=17, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80002a7674d0,0xffff80002a767778
    process=0xffff800045ff8018 user=0xffff80003c8e8000, vmspace=0xfffff3806ce94d08
    estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb>