Commit f03a8061 authored by Committed by Greg Kroah-Hartman
skbuff: Fix skb checksum partial check.
[ Upstream commit 31b33dfb0a144469dd805514c9e63f4993729a48 ] Earlier patch 6ae459bda tried to detect void ckecksum partial skb by comparing pull length to checksum offset. But it does not work for all cases since checksum-offset depends on updates to skb->data. Following patch fixes it by validating checksum start offset after skb-data pointer is updated. Negative value of checksum offset start means there is no need to checksum. Fixes: 6ae459bda ("skbuff: Fix skb checksum flag on skb pull") Reported-by: Andrew Vagin <firstname.lastname@example.org> Signed-off-by: Pravin B Shelar <email@example.com> Signed-off-by: David S. Miller <firstname.lastname@example.org> Signed-off-by: Greg Kroah-Hartman <email@example.com>
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