uvm_fault(0xfffff1800ded2468, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      rtable_l2+0x6b: movzbl  0(%rax,%rcx,4),%eax
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*494171  21992      0           0  0x4000000    0  syz-executor
rtable_l2(0) at rtable_l2+0x6b sys/net/rtable.c:315
in_pcbhash_insert(fffff1806fd57a40) at in_pcbhash_insert+0x193 sys/netinet/in_pcb.c:-1
in_pcballoc(ffff800010fe0f20,ffffffff839b52c0,1) at in_pcballoc+0x23a sys/netinet/in_pcb.c:269
tcp_attach(ffff800010fe0f20,6,1) at tcp_attach+0x1c4 sys/netinet/tcp_usrreq.c:496
socreate(18,ffff80003c9a3970,1,6) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline]
socreate(18,ffff80003c9a3970,1,6) at socreate+0x22f sys/kern/uipc_socket.c:220
sys_socket(ffff80002f0bcfb8,ffff80003c9a3ab0,ffff80003c9a3a00) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102
syscall(ffff80003c9a3ab0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9a3ab0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x184f0d19720, count: 7
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(0xfffff1800ded2468, 0x0, 0, 1) -> e
ddb> show kasan
No such command
ddb> trace
rtable_l2(0) at rtable_l2+0x6b sys/net/rtable.c:315
in_pcbhash_insert(fffff1806fd57a40) at in_pcbhash_insert+0x193 sys/netinet/in_pcb.c:-1
in_pcballoc(ffff800010fe0f20,ffffffff839b52c0,1) at in_pcballoc+0x23a sys/netinet/in_pcb.c:269
tcp_attach(ffff800010fe0f20,6,1) at tcp_attach+0x1c4 sys/netinet/tcp_usrreq.c:496
socreate(18,ffff80003c9a3970,1,6) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline]
socreate(18,ffff80003c9a3970,1,6) at socreate+0x22f sys/kern/uipc_socket.c:220
sys_socket(ffff80002f0bcfb8,ffff80003c9a3ab0,ffff80003c9a3a00) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102
syscall(ffff80003c9a3ab0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9a3ab0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x184f0d19720, count: -8
ddb>