From c2aa3665cf8510b1665ee2f5a9525cf7be6dec4f Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 25 Jan 2011 23:18:38 +0000 Subject: [PATCH] net: add kmemcheck annotation in __alloc_skb() pskb_expand_head() triggers a kmemcheck warning when copy of skb_shared_info is done in pskb_expand_head() This is because destructor_arg field is not necessarily initialized at this point. Add kmemcheck_annotate_variable() call in __alloc_skb() to instruct kmemcheck this is a normal situation. Resolves bugzilla.kernel.org 27212 Reference: https://bugzilla.kernel.org/show_bug.cgi?id=27212 Reported-by: Christian Casteyde Signed-off-by: Eric Dumazet CC: Andrew Morton Signed-off-by: David S. Miller --- net/core/skbuff.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 7cd1bc86d591..d883dcc78b6b 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -210,6 +210,7 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask, shinfo = skb_shinfo(skb); memset(shinfo, 0, offsetof(struct skb_shared_info, dataref)); atomic_set(&shinfo->dataref, 1); + kmemcheck_annotate_variable(shinfo->destructor_arg); if (fclone) { struct sk_buff *child = skb + 1; -- 2.20.1