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| author | paul.moore@hp.com <paul.moore@hp.com> | 2006-10-04 11:46:31 -0400 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-10-11 23:59:29 -0700 |
| commit | ffb733c65000ee701294f7b80c4eca2a5f335637 (patch) | |
| tree | edda8e25792fe4a7bf0c619787949291276b9ed7 /net/netlabel | |
| parent | c25d5180441e344a3368d100c57f0a481c6944f7 (diff) | |
| download | linux-ffb733c65000ee701294f7b80c4eca2a5f335637.tar.gz linux-ffb733c65000ee701294f7b80c4eca2a5f335637.tar.bz2 linux-ffb733c65000ee701294f7b80c4eca2a5f335637.zip | |
NetLabel: fix a cache race condition
Testing revealed a problem with the NetLabel cache where a cached entry could
be freed while in use by the LSM layer causing an oops and other problems.
This patch fixes that problem by introducing a reference counter to the cache
entry so that it is only freed when it is no longer in use.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'net/netlabel')
| -rw-r--r-- | net/netlabel/netlabel_kapi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c index 54fb7de3c2b1..ff971103fd0c 100644 --- a/net/netlabel/netlabel_kapi.c +++ b/net/netlabel/netlabel_kapi.c @@ -200,7 +200,7 @@ void netlbl_cache_invalidate(void) int netlbl_cache_add(const struct sk_buff *skb, const struct netlbl_lsm_secattr *secattr) { - if (secattr->cache.data == NULL) + if (secattr->cache == NULL) return -ENOMSG; if (CIPSO_V4_OPTEXIST(skb)) |