[PATCH] macvtap: fix the uninitialized var using in macvtap_alloc_skb()
From: Jason Wang <hidden>
Date: 2011-09-19 09:45:12
Commit d1b08284 use new frag API but would leave f to be used uninitialized, this patch fix it. Signed-off-by: Jason Wang <redacted> --- drivers/net/macvtap.c | 12 +++++------- 1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 7c3f84a..3da5578 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c@@ -453,7 +453,6 @@ static int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from, int copy = skb_headlen(skb); int size, offset1 = 0; int i = 0; - skb_frag_t *f; /* Skip over from offset */ while (count && (offset >= from->iov_len)) {
@@ -503,14 +502,13 @@ static int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from, skb->truesize += len; atomic_add(len, &skb->sk->sk_wmem_alloc); while (len) { - __skb_fill_page_desc( - skb, i, page[i], - base & ~PAGE_MASK, - min_t(int, len, PAGE_SIZE - f->page_offset)); + int off = base & ~PAGE_MASK; + int size = min_t(int, len, PAGE_SIZE - off); + __skb_fill_page_desc(skb, i, page[i], off, size); skb_shinfo(skb)->nr_frags++; /* increase sk_wmem_alloc */ - base += f->size; - len -= f->size; + base += size; + len -= size; i++; } offset1 = 0;