From: Wei Wang <wei...@google.com>
Date: Thu, 18 Jan 2018 10:40:03 -0800
> From: Wei Wang <wei...@google.com>
>
> After commit 4512c43eac7e, if we add a route to the subtree of tb6_root
> which does not have any route attached to it yet, the current code will
> let tb6_root and the node in the subtree share the same route.
> This could cause problem cause tb6_root has RTN_INFO flag marked and the
> tree repair and clean up code will not work properly.
> This commit makes sure tb6_root->leaf points back to null_entry instead
> of sharing route with other node.
>
> It fixes the following syzkaller reported issue:
...
> Fixes: 4512c43eac7e ("ipv6: remove null_entry before adding default route")
> Signed-off-by: Wei Wang <wei...@google.com>
> Acked-by: Eric Dumazet <eduma...@google.com>
Applied, thank you.
