diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-04-18 12:21:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-09 09:05:02 +0200 |
| commit | 6ac03e6ddde97faa4b93097efda89fdbf26f2737 (patch) | |
| tree | 7868b7cb026db7c931c22d4d0a8b077e565630c6 /net | |
| parent | 72ae15d5ce5fd37f3c36fd0a5a3de3cf266c11e8 (diff) | |
netfilter: nft_set_rbtree: overlap detection with element re-addition after deletion
[ Upstream commit babc3dc9524f0bcb5a0ec61f3c3639b11508fad6 ]
This patch fixes spurious EEXIST errors.
Extend d2df92e98a34 ("netfilter: nft_set_rbtree: handle element
re-addition after deletion") to deal with elements with same end flags
in the same transation.
Reset the overlap flag as described by 7c84d41416d8 ("netfilter:
nft_set_rbtree: Detect partial overlaps on insertion").
Fixes: 7c84d41416d8 ("netfilter: nft_set_rbtree: Detect partial overlaps on insertion")
Fixes: d2df92e98a34 ("netfilter: nft_set_rbtree: handle element re-addition after deletion")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nft_set_rbtree.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c index 217ab3644c25..94a5446c5eae 100644 --- a/net/netfilter/nft_set_rbtree.c +++ b/net/netfilter/nft_set_rbtree.c @@ -348,7 +348,11 @@ static int __nft_rbtree_insert(const struct net *net, const struct nft_set *set, *ext = &rbe->ext; return -EEXIST; } else { - p = &parent->rb_left; + overlap = false; + if (nft_rbtree_interval_end(rbe)) + p = &parent->rb_left; + else + p = &parent->rb_right; } } |