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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-07-08 19:36:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-07-11 20:26:19 -0700 |
| commit | e912b1142be8f1e2c71c71001dc992c6e5eb2ec1 (patch) | |
| tree | 9812c7d3e5431852d25bc15860830413ff15dc51 /usr | |
| parent | e594e96e8a14101a6decabf6746bd5186287debc (diff) | |
net: sk_prot_alloc() should not blindly overwrite memory
Some sockets use SLAB_DESTROY_BY_RCU, and our RCU code correctness
depends on sk->sk_nulls_node.next being always valid. A NULL
value is not allowed as it might fault a lockless reader.
Current sk_prot_alloc() implementation doesnt respect this hypothesis,
calling kmem_cache_alloc() with __GFP_ZERO. Just call memset() around
the forbidden field.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions