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| author | Dmitry Shmidt <dimitrysh@google.com> | 2016-09-16 14:34:07 -0700 |
|---|---|---|
| committer | Dmitry Shmidt <dimitrysh@google.com> | 2016-09-16 14:34:07 -0700 |
| commit | a517d900c6b4996dd6a6ba2f600dabe1c4da717a (patch) | |
| tree | ceb85027033fa99487deb1da5e8fa5ddddb92823 /net/ipv4 | |
| parent | 441e10ac4ca3a476d76091a1bd250ac4ff7306c5 (diff) | |
| parent | 1d074db69c46d62ce82b331c2080e2fcb710bf4a (diff) | |
Merge tag 'v4.4.21' into android-4.4.y
This is the 4.4.21 stable release
Change-Id: I03e47d6fdca8084641c4b4f9658ea0b0edb8f297
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/udp.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 7473dad69c92..037a29ab00f0 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1276,6 +1276,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock, int peeked, off = 0; int err; int is_udplite = IS_UDPLITE(sk); + bool checksum_valid = false; bool slow; if (flags & MSG_ERRQUEUE) @@ -1301,11 +1302,12 @@ try_again: */ if (copied < ulen || UDP_SKB_CB(skb)->partial_cov) { - if (udp_lib_checksum_complete(skb)) + checksum_valid = !udp_lib_checksum_complete(skb); + if (!checksum_valid) goto csum_copy_err; } - if (skb_csum_unnecessary(skb)) + if (checksum_valid || skb_csum_unnecessary(skb)) err = skb_copy_datagram_msg(skb, sizeof(struct udphdr), msg, copied); else { |