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net: fix signedness bug in skb_splice_from_iter() 

The "len" variable needs to be signed for the error handling to work
correctly.

Fixes: 2e910b9532 ("net: Add a function to splice pages into an skbuff for MSG_SPLICE_PAGES")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/366861a7-87c8-4bbf-9101-69dd41021d07@kili.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Dan Carpenter 2023-05-26 16:39:15 +03:00 committed by Jakub Kicinski
parent 404621fab2
commit ef1bc119ce
1 changed files with 2 additions and 2 deletions
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4
net/core/skbuff.c
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@ -6931,8 +6931,8 @@ ssize_t skb_splice_from_iter(struct sk_buff *skb, struct iov_iter *iter,
unsigned int i;
while (iter->count > 0) {
ssize_t space, nr;
size_t off, len;
ssize_t space, nr, len;
size_t off;
ret = -EMSGSIZE;
space = frag_limit - skb_shinfo(skb)->nr_frags;