panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078
Starting stack trace...
panic(ffffffff830e4cb7) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309dd67,ffffffff830135c7,436,ffffffff8300abc5) at __assert+0x29
rtrequest(1,ffff80003158f2c0,38,ffff80003158f240,0) at rtrequest+0xdce sys/net/route.c:1078
rtm_output(ffff800001408800,ffff80003158f368,ffff80003158f2c0,38,0) at rtm_output+0x855 sys/net/rtsock.c:973
route_output(fffffd807bffe800,ffff800010fdd9f8) at route_output+0x9a1 sys/net/rtsock.c:878
route_send(ffff800010fdd9f8,fffffd807bffe800,0,0) at route_send+0xd7 sys/net/rtsock.c:342
sosend(ffff800010fdd9f8,0,ffff80003158f518,0,0,802) at sosend+0xa40
sendit(ffff80003117e028,3,ffff80003158f610,802,ffff80003158f6c0) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendto(ffff80003117e028,ffff80003158f770,ffff80003158f6c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:564
syscall(ffff80003158f770) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80003158f770) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x462875441c0, count: 246
End of stack trace.