From: Colin King <colin.k...@canonical.com> Date: Wed, 23 Aug 2017 12:13:05 +0100
> From: Colin Ian King <colin.k...@canonical.com> > > iph is being assigned the same value twice; remove the redundant > second assignment. > > Fixes warning: > net/ipv4/ip_gre.c:265:2: warning: Value stored to 'iph' is never read > > Signed-off-by: Colin Ian King <colin.k...@canonical.com> It is always necessary to reload any SKB header pointer after calls to functions which potentially change the data buffer of the SKB. pskb_may_pull() is one such call. Therefore your patch is adding a bug. If you want to remove the dup, you must remove the first not the second one.