From: Subasri S <subasris1210@gmail.com>
To: Pablo Neira Ayuso <pablo@netfilter.org>,
Florian Westphal <fw@strlen.de>, Phil Sutter <phil@nwl.cc>,
"David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>
Cc: netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Subasri S <subasris1210@gmail.com>
Subject: [PATCH nf-next] netfilter: remove redundant null check before kvfree()
Date: Thu, 25 Jun 2026 19:01:24 +0530 [thread overview]
Message-ID: <20260625133124.970238-1-subasris1210@gmail.com> (raw)
kvfree() internally performs NULL check on the pointer
handed to it and takes no action if it indeed is NULL.
Hence there is no need for a pre-check of the memory
pointer before handing it to kvfree().
Issue reported by ifnullfree.cocci Coccinelle semantic
patch script.
Signed-off-by: Subasri S <subasris1210@gmail.com>
---
net/netfilter/nft_set_rbtree.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c
index 018bbb6df4ce..efc25e788a1c 100644
--- a/net/netfilter/nft_set_rbtree.c
+++ b/net/netfilter/nft_set_rbtree.c
@@ -544,8 +544,7 @@ static int nft_array_intervals_alloc(struct nft_array *array, u32 max_intervals)
if (!intervals)
return -ENOMEM;
- if (array->intervals)
- kvfree(array->intervals);
+ kvfree(array->intervals);
array->intervals = intervals;
array->max_intervals = max_intervals;
--
2.43.0
reply other threads:[~2026-06-25 13:31 UTC|newest]
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