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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-06-21 14:01:41 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-06-27 19:03:37 +0200 |
| commit | 05907f10e235680cc7fb196810e4ad3215d5e648 (patch) | |
| tree | 86ed120de0ef116f27b9aa350df0996f93c84c5e /include/net/xdp_sock.h | |
| parent | cb8092d70a6f5f01ec1490fce4d35efed3ed996c (diff) | |
| download | linux-05907f10e235680cc7fb196810e4ad3215d5e648.tar.bz2 | |
netfilter: nft_dynset: restore set element counter when failing to update
This patch fixes a race condition.
nft_rhash_update() might fail for two reasons:
- Element already exists in the hashtable.
- Another packet won race to insert an entry in the hashtable.
In both cases, new() has already bumped the counter via atomic_add_unless(),
therefore, decrement the set element counter.
Fixes: 22fe54d5fefc ("netfilter: nf_tables: add support for dynamic set updates")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net/xdp_sock.h')
0 files changed, 0 insertions, 0 deletions