From: Alexey Kodanev <alexey.koda...@oracle.com>
Date: Tue, 3 Apr 2018 15:00:06 +0300
> A new RTF_CACHE route can be created with the socket's dst cache
> update between the below calls in udpv6_sendmsg(), when datagram
> sending results to ICMPV6_PKT_TOOBIG error:
>
> dst = ip6_sk_dst_lookup_flow(...)
> ...
> release_dst:
> if (dst) {
> if (connected) {
> ip6_dst_store(sk, dst)
>
> Therefore, the new socket's dst cache reset to the old one on
> "release_dst:".
>
> The first three patches prepare the code to store dst cache
> with ip6_sk_dst_lookup_flow():
...
> The last patch contains the actual fix that removes sk dst cache
> update in the end of udpv6_sendmsg(), and allows to do it in
> ip6_sk_dst_lookup_flow().
Looks good, applied and queued up for -stable.
Thanks!
