[PATCH] netfilter: remove redundant check on ret being non-zero

Subsystems: networking [general], the rest

STALE3458d

2 messages, 2 authors, 2017-03-06 · open the first message on its own page

[PATCH] netfilter: remove redundant check on ret being non-zero

From: Colin King <hidden>
Date: 2017-02-28 11:31:47

From: Colin Ian King <redacted>

ret is initialized to zero and if it is set to non-zero in the
xt_entry_foreach loop then we exit via the out_free label. Hence
the check for ret being non-zero is redundant and can be removed.

Detected by CoverityScan, CID#1357132 ("Logically Dead Code")

Signed-off-by: Colin Ian King <redacted>
---
 net/ipv4/netfilter/arp_tables.c | 2 --
 1 file changed, 2 deletions(-)
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 6241a81..f17dab1 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -562,8 +562,6 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
 		    XT_ERROR_TARGET) == 0)
 			++newinfo->stacksize;
 	}
-	if (ret != 0)
-		goto out_free;
 
 	ret = -EINVAL;
 	if (i != repl->num_entries)
-- 
2.10.2

Re: [PATCH] netfilter: remove redundant check on ret being non-zero

From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2017-03-06 17:06:51

On Tue, Feb 28, 2017 at 11:31:15AM +0000, Colin King wrote:
From: Colin Ian King <redacted>

ret is initialized to zero and if it is set to non-zero in the
xt_entry_foreach loop then we exit via the out_free label. Hence
the check for ret being non-zero is redundant and can be removed.

Detected by CoverityScan, CID#1357132 ("Logically Dead Code")
Applied, thanks.
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