3.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: "David S. Miller" <[email protected]> [ Upstream commit dccd9ecc374462e5d6a5b8f8110415a86c2213d8 ] Due to RCU lookups and RCU based release, fib_info objects can be found during lookup which have fi->fib_dead set. We must ignore these entries, otherwise we risk dereferencing the parts of the entry which are being torn down. Reported-by: Yevgen Pronenko <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- net/ipv4/fib_trie.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1371,6 +1371,8 @@ static int check_leaf(struct fib_table * if (fa->fa_tos && fa->fa_tos != flp->flowi4_tos) continue; + if (fi->fib_dead) + continue; if (fa->fa_info->fib_scope < flp->flowi4_scope) continue; fib_alias_accessed(fa); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
