panic: attempt to execute user address 0x0 in supervisor mode
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
  71377   7827      0           0          0    1  syz-executor.1
* 93168   7827      0           0  0x4000000    0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
pageflttrap() at pageflttrap+0x40b
kerntrap(ffff8000221a2a30) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800020b58000,fffffd8068b72b68,10,ffff80000005b5f0,ffff8000221a2c98) at alltraps_kern_meltdown+0x7b
0(b,ffff8000221a2bf8,83,ffff8000221a2c98,0,b) at 0
rt_clone(ffff8000221a2d08,fffffd8070b7d2c8,0) at rt_clone+0x78 sys/net/route.c:266
rtalloc_mpath(fffffd8070b7d2c8,0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline]
rtalloc_mpath(fffffd8070b7d2c8,0,0) at rtalloc_mpath+0xba sys/net/route.c:359
in_pcbselsrc(ffff8000221a2de0,fffffd806915ee20,fffffd8070b7d248) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934
in_pcbconnect(fffffd8070b7d248,fffffd806915ee00) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492
udp_usrreq(fffffd806860b060,4,0,fffffd806915ee00,0,ffff800020ab1650) at udp_usrreq+0x560
sys_connect(ffff800020ab1650,ffff8000221a2f68,ffff8000221a2fb0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388
syscall(ffff8000221a3030) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff8000221a3030) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,fffffffffffffed2,0,3,52b3b42e010) at Xsyscall+0x128
end of kernel
end trace frame: 0x52db5811680, count: 1
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