diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-04-23 04:02:05 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-04-23 04:02:05 -0300 |
commit | 394569928e2f17dff4ae367ac700048138e318c7 (patch) | |
tree | c789d2a2d107284e78f6c6558267b6984f518581 /drivers/net/macvtap.c | |
parent | bdcfd44fb5b5fb8fd660e7f93f1095c507481024 (diff) |
Linux-libre 4.5.2-gnupck-4.5.2-gnu
Diffstat (limited to 'drivers/net/macvtap.c')
-rw-r--r-- | drivers/net/macvtap.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index d636d051f..95394edd1 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -760,6 +760,8 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m, macvtap16_to_cpu(q, vnet_hdr.hdr_len) : GOODCOPY_LEN; if (copylen > good_linear) copylen = good_linear; + else if (copylen < ETH_HLEN) + copylen = ETH_HLEN; linear = copylen; i = *from; iov_iter_advance(&i, copylen); @@ -769,10 +771,11 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m, if (!zerocopy) { copylen = len; - if (macvtap16_to_cpu(q, vnet_hdr.hdr_len) > good_linear) + linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len); + if (linear > good_linear) linear = good_linear; - else - linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len); + else if (linear < ETH_HLEN) + linear = ETH_HLEN; } skb = macvtap_alloc_skb(&q->sk, MACVTAP_RESERVE, copylen, |