diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2011-01-29 20:44:54 -0800 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2011-04-28 08:20:59 -0700 |
| commit | 760a5d738e7fe9bcdf6dd6a573541edb01a95ac2 (patch) | |
| tree | 0debc0722d90c270fba47ef4dddbcc0934e65ffb /net | |
| parent | 38a4189d5c25a817018416dee94b52bd9be2e7c5 (diff) | |
gro: Reset dev pointer on reuse
commit 66c46d741e2e60f0e8b625b80edb0ab820c46d7a upstream.
On older kernels the VLAN code may zero skb->dev before dropping
it and causing it to be reused by GRO.
Unfortunately we didn't reset skb->dev in that case which causes
the next GRO user to get a bogus skb->dev pointer.
This particular problem no longer happens with the current upstream
kernel due to changes in VLAN processing.
However, for correctness we should still reset the skb->dev pointer
in the GRO reuse function in case a future user does the same thing.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 7c3e7c36c0b7..bd6c169e2506 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3231,6 +3231,7 @@ void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb) { __skb_pull(skb, skb_headlen(skb)); skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb)); + skb->dev = napi->dev; napi->skb = skb; } |