uvm_fault(0xfffff0006d1a1d00, 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
*256092  76621      0           0  0x4000000    0  syz-executor
ktrops(ffff80003c8f7250,ffffffffffffffff,0,a0c7df9f,fffff0006f9e2b40,fffff00007ffd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline]
ktrops(ffff80003c8f7250,ffffffffffffffff,0,a0c7df9f,fffff0006f9e2b40,fffff00007ffd750) at ktrops+0x58 sys/kern/kern_ktrace.c:571
doktrace(fffff0006f9e2b40,4,20c7df9f,0,ffff80003c8f7250) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
doktrace(fffff0006f9e2b40,4,20c7df9f,0,ffff80003c8f7250) at doktrace+0x6bd sys/kern/kern_ktrace.c:518
sys_ktrace(ffff80003c8f7250,ffff80002a75d700,ffff80002a75d650) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559
syscall(ffff80002a75d700) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a75d700) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf1536de2750, 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(0xfffff0006d1a1d00, 0xf, 0, 1) -> e
ddb> show kasan
No such command
ddb> trace
ktrops(ffff80003c8f7250,ffffffffffffffff,0,a0c7df9f,fffff0006f9e2b40,fffff00007ffd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline]
ktrops(ffff80003c8f7250,ffffffffffffffff,0,a0c7df9f,fffff0006f9e2b40,fffff00007ffd750) at ktrops+0x58 sys/kern/kern_ktrace.c:571
doktrace(fffff0006f9e2b40,4,20c7df9f,0,ffff80003c8f7250) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
doktrace(fffff0006f9e2b40,4,20c7df9f,0,ffff80003c8f7250) at doktrace+0x6bd sys/kern/kern_ktrace.c:518
sys_ktrace(ffff80003c8f7250,ffff80002a75d700,ffff80002a75d650) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559
syscall(ffff80002a75d700) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a75d700) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf1536de2750, count: -5
ddb> show registers
rdi               0xffff80003c8f7250
rsi               0xffffffffffffffff
rbp               0xffff80002a75d420
rbx               0xfffff00007ffd750
rdx               0xffff8000015e6900
rcx                       0xa0c7df9f
rax               0xffff80003c8f7250
r8                0xfffff0006f9e2b40
r9                0xfffff00007ffd750
r10               0xffff8000314b8000
r11               0xb63e953fffa06248
r12               0xffff80003c8f7250
r13               0xffffffffffffffff
r14               0xffffffffffffffff
r15                       0xa0c7df9f
rip               0xffffffff8228b1a8    ktrops+0x58
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff80002a75d3a0
ss                                 0
ktrops+0x58:    movq    0x10(%r14),%r14
ddb>