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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-01-25 23:18:38 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-27 14:41:06 -0800 |
| commit | c2aa3665cf8510b1665ee2f5a9525cf7be6dec4f (patch) | |
| tree | 0f4443e66b7b93ba60264b1ce51d3f3057eb74b2 /net/core/skbuff.c | |
| parent | 6d3a9a685465986d7653c5abbc0b24681e7c44d7 (diff) | |
| download | kernel-common-c2aa3665cf8510b1665ee2f5a9525cf7be6dec4f.tar.gz kernel-common-c2aa3665cf8510b1665ee2f5a9525cf7be6dec4f.tar.bz2 kernel-common-c2aa3665cf8510b1665ee2f5a9525cf7be6dec4f.zip | |
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 <casteyde.christian@free.fr>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 1 |
1 files changed, 1 insertions, 0 deletions
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; |