Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ef8aef55ce61fd0e2af798695f7386ac756ae1e7 Commit: ef8aef55ce61fd0e2af798695f7386ac756ae1e7 Parent: 2fbe43f6f631dd7ce19fb1499d6164a5bdb34568 Author: Herbert Xu <[EMAIL PROTECTED]> AuthorDate: Thu Sep 6 14:06:35 2007 +0100 Committer: David S. Miller <[EMAIL PROTECTED](none)> CommitDate: Tue Sep 11 10:29:07 2007 +0200
[NET]: Do not dereference iov if length is zero When msg_iovlen is zero we shouldn't try to dereference msg_iov. Right now the only thing that tries to do so is skb_copy_and_csum_datagram_iovec. Since the total length should also be zero if msg_iovlen is zero, it's sufficient to check the total length there and simply return if it's zero. Signed-off-by: Herbert Xu <[EMAIL PROTECTED]> Signed-off-by: David S. Miller <[EMAIL PROTECTED]> --- net/core/datagram.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/net/core/datagram.c b/net/core/datagram.c index cb056f4..029b93e 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -450,6 +450,9 @@ int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb, __wsum csum; int chunk = skb->len - hlen; + if (!chunk) + return 0; + /* Skip filled elements. * Pretty silly, look at memcpy_toiovec, though 8) */ - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html