panic: kernel diagnostic assertion "ifa == rt->rt_ifa" failed: file "/syzkaller/managers/multicore/kernel/sys/netinet6/nd6.c", line 947
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 308815  58880      0           0          0    0  syz-executor.1
* 34222  58880      0           0  0x4000000    1K 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(ffffffff82207803,ffffffff82201b7e,3b3,ffffffff821c028a) at __assert+0x2b sys/kern/subr_prf.c:154
nd6_rtrequest(ffff800000ae4800,1,fffffd8065ff39a8) at nd6_rtrequest+0xbb4 sys/netinet6/nd6.c:947
rtrequest(1,ffff800022971888,1,ffff800022971958,0) at rtrequest+0x9bf sys/net/route.c:973
rt_ifa_add(ffff800000b2a400,240404,ffff800000b2a458,0) at rt_ifa_add+0x290 sys/net/route.c:1133
rt_ifa_addlocal(ffff800000b2a400) at rt_ifa_addlocal+0x16d sys/net/route.c:1242
in_ifinit(ffff800000ae4800,ffff800000b2a400,ffff800022971c80,0) at in_ifinit+0x1cf sys/netinet/in.c:614
in_ioctl_sifaddr(8020690c,ffff800022971c70,ffff800000ae4800,1) at in_ioctl_sifaddr+0x208 sys/netinet/in.c:360
in_ioctl(8020690c,ffff800022971c70,ffff800000ae4800,1) at in_ioctl+0x1e7 sys/netinet/in.c:231
ifioctl(fffffd8078074980,8020690c,ffff800022971c70,ffff800020ab0ee8) at ifioctl+0xb64 sys/net/if.c:2202
sys_ioctl(ffff800020ab0ee8,ffff800022971d88,ffff800022971dd0) at sys_ioctl+0x5b9
syscall(ffff800022971e50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800022971e50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffff36,0,3,b518ff45010) at Xsyscall+0x128
end of kernel
end trace frame: 0xb540f486670, count: 1
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