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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2014-05-22 12:36:03 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2014-06-02 10:54:25 +0200 |
| commit | 46bbafceb201df635b7c0a9d7a0e526cb2f8cb75 (patch) | |
| tree | 83072842019888714b8457ebbd1c9782087f14b2 /net | |
| parent | 4c552a64dfc2063ef060cf45788cd4250eea3596 (diff) | |
| download | linux-46bbafceb201df635b7c0a9d7a0e526cb2f8cb75.tar.gz linux-46bbafceb201df635b7c0a9d7a0e526cb2f8cb75.tar.bz2 linux-46bbafceb201df635b7c0a9d7a0e526cb2f8cb75.zip | |
netfilter: nf_tables: fix wrong transaction ordering in set elements
The transaction needs to be placed at the end of the commit list,
otherwise event notifications are reordered and we may crash when
releasing object via call_rcu.
This problem was introduced in 60319eb ("netfilter: nf_tables: use new
transaction infrastructure to handle elements").
Reported-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 047884776586..9365531ee911 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -3077,7 +3077,7 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, goto err4; nft_trans_elem(trans) = elem; - list_add(&trans->list, &ctx->net->nft.commit_list); + list_add_tail(&trans->list, &ctx->net->nft.commit_list); return 0; err4: @@ -3161,7 +3161,7 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set, goto err2; nft_trans_elem(trans) = elem; - list_add(&trans->list, &ctx->net->nft.commit_list); + list_add_tail(&trans->list, &ctx->net->nft.commit_list); nft_data_uninit(&elem.key, NFT_DATA_VALUE); if (set->flags & NFT_SET_MAP) |