g懲懲懲懲懲懲懲懲懲懲懲櫝anic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/route.c", line 951
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*444720  64073      0           0  0x4000000    0  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
__assert(ffffffff821de6c9,ffffffff821afc2c,3b7,ffffffff821c01b9) at __assert+0x2b sys/kern/subr_prf.c:154
rtrequest(1,ffff80001593c908,38,ffff80001593c878,0) at rtrequest+0xbf1 sys/net/route.c:951
rtm_output(ffff800000ada200,ffff80001593c9b0,ffff80001593c908,38,0) at rtm_output+0x62f sys/net/rtsock.c:901
route_output(fffffd802e9a6000,fffffd802ec32650,0,0) at route_output+0x7d9 sys/net/rtsock.c:819
route_usrreq(fffffd802ec32650,9,fffffd802e9a6000,0,0,ffff8000ffff2290) at route_usrreq+0x363 sys/net/rtsock.c:275
sosend(fffffd802ec32650,0,ffff80001593cbb0,0,0,80) at sosend+0x63d sys/kern/uipc_socket.c:524
sendit(ffff8000ffff2290,3,ffff80001593cc90,0,ffff80001593cd70) at sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff8000ffff2290,ffff80001593cd28,ffff80001593cd70) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff80001593cdf0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffffd8,0,6,e8cb6415010) at Xsyscall+0x128
end of kernel
end trace frame: 0xe8ec6659aa0, count: 3
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