From: J. Bruce Fields Date: Wed, 26 Jun 2013 14:55:40 +0000 (-0400) Subject: svcrpc: don't error out on small tcp fragment X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=369cf4be7588876d071c86d0efb7908e9bba7f6f;p=karo-tx-linux.git svcrpc: don't error out on small tcp fragment commit 1f691b07c5dc51b2055834f58c0f351defd97f27 upstream. Though clients we care about mostly don't do this, it is possible for rpc requests to be sent in multiple fragments. Here we have a sanity check to ensure that the final received rpc isn't too small--except that the number we're actually checking is the length of just the final fragment, not of the whole rpc. So a perfectly legal rpc that's unluckily fragmented could cause the server to close the connection here. Signed-off-by: J. Bruce Fields Signed-off-by: Greg Kroah-Hartman --- diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index df74919c81c0..305374d4fb98 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -1095,7 +1095,7 @@ static int svc_tcp_recvfrom(struct svc_rqst *rqstp) goto err_noclose; } - if (svc_sock_reclen(svsk) < 8) { + if (svsk->sk_datalen < 8) { svsk->sk_datalen = 0; goto err_delete; /* client is nuts. */ }