panic: kernel diagnostic assertion "ifa == rt->rt_ifa" failed: file "/syzkaller/managers/main/kernel/sys/netinet6/nd6.c", line 947
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*209462  83222      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(ffffffff821e4bdd,ffffffff821c796a,3b3,ffffffff8219e2c1) at __assert+0x2b sys/kern/subr_prf.c:154
nd6_rtrequest(ffff800000a75000,1,fffffd802e517a88) at nd6_rtrequest+0xbb4 sys/netinet6/nd6.c:947
rtrequest(1,ffff800016959f18,1,ffff800016959fe8,0) at rtrequest+0x9be sys/net/route.c:973
rt_ifa_add(ffff800000ac5d00,240404,ffff800000ac5d58,0) at rt_ifa_add+0x290 sys/net/route.c:1133
rt_ifa_addlocal(ffff800000ac5d00) at rt_ifa_addlocal+0x149 sys/net/route.c:1242
in_ifinit(ffff800000a75000,ffff800000ac5d00,ffff80001695a310,0) at in_ifinit+0x1cf sys/netinet/in.c:614
in_ioctl_sifaddr(8020690c,ffff80001695a300,ffff800000a75000,1) at in_ioctl_sifaddr+0x208 sys/netinet/in.c:360
in_ioctl(8020690c,ffff80001695a300,ffff800000a75000,1) at in_ioctl+0x1e7 sys/netinet/in.c:231
ifioctl(fffffd802e4bbc10,8020690c,ffff80001695a300,ffff8000ffff3b40) at ifioctl+0xb34 sys/net/if.c:2202
sys_ioctl(ffff8000ffff3b40,ffff80001695a418,ffff80001695a460) at sys_ioctl+0x5b9
syscall(ffff80001695a4e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffff36,0,3,de10d1d8010) at Xsyscall+0x128
end of kernel
end trace frame: 0xde3dc1836b0, count: 1
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