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Date: Sat, 5 Mar 2011 00:49:41 +0100 From: Nicolas Kaiser <nikai@...ai.net> To: "David S. Miller" <davem@...emloft.net> Cc: Arnd Bergmann <arnd@...db.de>, Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] drivers/net/macvtap: fix error check 'len' is unsigned of type size_t and can't be negative. Signed-off-by: Nicolas Kaiser <nikai@...ai.net> --- drivers/net/macvtap.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 5933621..fc27a99 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -528,8 +528,9 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, vnet_hdr_len = q->vnet_hdr_sz; err = -EINVAL; - if ((len -= vnet_hdr_len) < 0) + if (len < vnet_hdr_len) goto err; + len -= vnet_hdr_len; err = memcpy_fromiovecend((void *)&vnet_hdr, iv, 0, sizeof(vnet_hdr)); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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