Searched hist:ca44ac38 (Results 1 – 2 of 2) sorted by relevance
/openbmc/linux/mm/ |
H A D | slub.c | b3d41885 Mon Feb 14 11:35:22 CST 2011 Eric Dumazet <eric.dumazet@gmail.com> slub: fix kmemcheck calls to match ksize() hints
Recent use of ksize() in network stack (commit ca44ac38 : net: don't reallocate skb->head unless the current one hasn't the needed extra size or is shared) triggers kmemcheck warnings, because ksize() can return more space than kmemcheck is aware of.
Pekka Enberg noticed SLAB+kmemcheck is doing the right thing, while SLUB +kmemcheck doesnt.
Bugzilla reference #27212
Reported-by: Christian Casteyde <casteyde.christian@free.fr> Suggested-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Christoph Lameter <cl@linux.com> CC: Changli Gao <xiaosuo@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@kernel.org> b3d41885 Mon Feb 14 11:35:22 CST 2011 Eric Dumazet <eric.dumazet@gmail.com> slub: fix kmemcheck calls to match ksize() hints Recent use of ksize() in network stack (commit ca44ac38 : net: don't reallocate skb->head unless the current one hasn't the needed extra size or is shared) triggers kmemcheck warnings, because ksize() can return more space than kmemcheck is aware of. Pekka Enberg noticed SLAB+kmemcheck is doing the right thing, while SLUB +kmemcheck doesnt. Bugzilla reference #27212 Reported-by: Christian Casteyde <casteyde.christian@free.fr> Suggested-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Christoph Lameter <cl@linux.com> CC: Changli Gao <xiaosuo@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@kernel.org>
|
/openbmc/linux/net/core/ |
H A D | skbuff.c | ca44ac38 Mon Nov 29 16:48:46 CST 2010 Changli Gao <xiaosuo@gmail.com> net: don't reallocate skb->head unless the current one hasn't the needed extra size or is shared
skb head being allocated by kmalloc(), it might be larger than what actually requested because of discrete kmem caches sizes. Before reallocating a new skb head, check if the current one has the needed extra size.
Do this check only if skb head is not shared.
Signed-off-by: Changli Gao <xiaosuo@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> ca44ac38 Mon Nov 29 16:48:46 CST 2010 Changli Gao <xiaosuo@gmail.com> net: don't reallocate skb->head unless the current one hasn't the needed extra size or is shared skb head being allocated by kmalloc(), it might be larger than what actually requested because of discrete kmem caches sizes. Before reallocating a new skb head, check if the current one has the needed extra size. Do this check only if skb head is not shared. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|