uvm_fault(0xfffffd806c4a79a8, 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
* 64381   8768      0           0  0x4000000    1K syz-executor
  44535  25398      0         0x2          0    0  syz-executor
ktrops(ffff8000fffe8a80,ffffffffffffffff,0,80003920,fffffd8067e22bf0,fffffd80097fd618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline]
ktrops(ffff8000fffe8a80,ffffffffffffffff,0,80003920,fffffd8067e22bf0,fffffd80097fd618) at ktrops+0x58 sys/kern/kern_ktrace.c:571
doktrace(fffffd8067e22bf0,4,3920,0,ffff8000fffe8a80) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
doktrace(fffffd8067e22bf0,4,3920,0,ffff8000fffe8a80) at doktrace+0x6bd sys/kern/kern_ktrace.c:518
sys_ktrace(ffff8000fffe8a80,ffff80002a2847a0,ffff80002a2846f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559
syscall(ffff80002a2847a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2847a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x303cdd65c10, 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{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd806c4a79a8, 0xf, 0, 1) -> e
ddb{1}> trace
ktrops(ffff8000fffe8a80,ffffffffffffffff,0,80003920,fffffd8067e22bf0,fffffd80097fd618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline]
ktrops(ffff8000fffe8a80,ffffffffffffffff,0,80003920,fffffd8067e22bf0,fffffd80097fd618) at ktrops+0x58 sys/kern/kern_ktrace.c:571
doktrace(fffffd8067e22bf0,4,3920,0,ffff8000fffe8a80) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
doktrace(fffffd8067e22bf0,4,3920,0,ffff8000fffe8a80) at doktrace+0x6bd sys/kern/kern_ktrace.c:518
sys_ktrace(ffff8000fffe8a80,ffff80002a2847a0,ffff80002a2846f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559
syscall(ffff80002a2847a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2847a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x303cdd65c10, count: -5
ddb{1}> show registers
rdi               0xffff80002ab81000
rsi                           0x3360    __ALIGN_SIZE+0x2360
rbp               0xffff80002a2844b0
rbx               0xfffffd80097fd618
rdx               0xffff80002ab81000
rcx                           0x335f    __ALIGN_SIZE+0x235f
rax               0xffffffff82351b83    ktrops+0x43
r8                0xfffffd8067e22bf0
r9                0xfffffd80097fd618
r10               0xa3027b99bcf24cf6
r11               0xf94e6fc2705e58e4
r12               0xffff8000fffe8a80
r13               0xffffffffffffffff
r14               0xffffffffffffffff
r15                       0x80003920    __kernel_virt_to_phys+0x3920
rip               0xffffffff82351b98    ktrops+0x58
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff80002a284430
ss                                 0
ktrops+0x58:    movq    0x10(%r14),%r14
ddb{1}> show proc
PROC (syz-executor) tid=64381 pid=8768 tcnt=3 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=0xffff8000fffe8fb0,0xffff8000fffe9788
    process=0xffff8000ffff04e0 user=0xffff80002a27f000, vmspace=0xfffffd806c4a79a8
    estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 19099  248541  43623      0  2           0                syz-executor
 19099  462956  43623      0  3   0x4000080  fsleep        syz-executor
  8768  129387  66984      0  2           0                syz-executor
* 8768   64381  66984      0  7   0x4000000                syz-executor
  8768  125213  66984      0  3   0x4000080  fsleep        syz-executor
  3824   64023  67099      0  2         0x2                ifconfig
 67099  491586  96088      0  3    0x10008a  sigsusp       sh
 79677  295401  89132      0  2           0                syz-executor
 79677   86126  89132      0  3   0x4000080  fsleep        syz-executor
 96088   23983  42905      0  3        0x82  wait          syz-executor
 39769   41638      1      0  3    0x100083  ttyin         getty
 89132   88720  42905      0  3        0x82  nanoslp       syz-executor
 76328  197413      0      0  3     0x14280  nfsidl        nfsio
   155  476616      0      0  3     0x14280  nfsidl        nfsio
 23228  120981      0      0  3     0x14280  nfsidl        nfsio
  1228  385375      0      0  3     0x14280  nfsidl        nfsio
  6527  216522      0      0  3     0x14280  nfsidl        nfsio
 77751  355296      0      0  3     0x14280  nfsidl        nfsio
 23480  232377      0      0  3     0x14280  nfsidl        nfsio
 62556  500680      0      0  3     0x14280  nfsidl        nfsio
 98899    7193      0      0  3     0x14280  nfsidl        nfsio
 26482  188420      0      0  3     0x14280  nfsidl        nfsio
 28595  475527      0      0  3     0x14280  nfsidl        nfsio
 50407   17572      0      0  3     0x14280  nfsidl