From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Wed, 6 Sep 2023 15:22:58 +0000 (+0200)
Subject: netfilter: nft_set_pipapo: stop GC iteration if GC transaction allocation fails
X-Git-Tag: v6.6.7~1864^2~25^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6d365eabce3c018a80f6e0379b17df2abb17405e;p=platform%2Fkernel%2Flinux-starfive.git

netfilter: nft_set_pipapo: stop GC iteration if GC transaction allocation fails

nft_trans_gc_queue_sync() enqueues the GC transaction and it allocates a
new one. If this allocation fails, then stop this GC sync run and retry
later.

Fixes: 5f68718b34a5 ("netfilter: nf_tables: GC transaction API to avoid race with control plane")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index 10b89ac..c0dcc40d 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -1596,7 +1596,7 @@ static void pipapo_gc(const struct nft_set *_set, struct nft_pipapo_match *m)
 
 			gc = nft_trans_gc_queue_sync(gc, GFP_ATOMIC);
 			if (!gc)
-				break;
+				return;
 
 			nft_pipapo_gc_deactivate(net, set, e);
 			pipapo_drop(m, rulemap);