iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

netfilter: nf_tables: GC transaction race with netns dismantle

Browse Source 
commit 02c6c24402bf1c1e986899c14ba22a10b510916b upstream.

Use maybe_get_net() since GC workqueue might race with netns exit path.

Fixes: 5f68718b34a5 ("netfilter: nf_tables: GC transaction API to avoid race with control plane")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pablo Neira Ayuso 2024-06-13 03:01:43 +02:00 committed by Greg Kroah-Hartman
parent e7b86599fa
commit 9a3f450ed9
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
net/netfilter/nf_tables_api.c
View File

@ -6820,9 +6820,14 @@ struct nft_trans_gc *nft_trans_gc_alloc(struct nft_set *set,
if (!trans)
return NULL;
trans->net = maybe_get_net(net);
if (!trans->net) {
kfree(trans);
return NULL;
}
refcount_inc(&set->refs);
trans->set = set;
trans->net = get_net(net);
trans->seq = gc_seq;
return trans;