From 479432344420bc9a868088e346fecb6765e2b674 Mon Sep 17 00:00:00 2001
From: Julia Lawall
Date: Mon, 27 Jul 2009 06:15:43 +0000
Subject: net/netlabel: Correct redundant test
entry was tested for NULL near the beginning of the function, followed by a
return, and there is no intervening modification of its value.
A simplified version of the semantic match that finds this problem is as
follows: (http://www.emn.fr/x-info/coccinelle/)
//
@r exists@
local idexpression x;
expression E;
position p1,p2;
@@
if (x == NULL || ...) { ... when forall
return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
*x == NULL
|
*x != NULL
)
//
Signed-off-by: Julia Lawall
Acked-by: Paul Moore
Signed-off-by: David S. Miller
---
net/netlabel/netlabel_kapi.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
(limited to 'net')
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
index b0e582f2d37a..3ff6f325be3f 100644
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -185,8 +185,7 @@ int netlbl_cfg_unlbl_map_add(const char *domain,
return 0;
cfg_unlbl_map_add_failure:
- if (entry != NULL)
- kfree(entry->domain);
+ kfree(entry->domain);
kfree(entry);
kfree(addrmap);
kfree(map4);
@@ -385,8 +384,7 @@ int netlbl_cfg_cipsov4_map_add(u32 doi,
cfg_cipsov4_map_add_failure:
cipso_v4_doi_putdef(doi_def);
- if (entry != NULL)
- kfree(entry->domain);
+ kfree(entry->domain);
kfree(entry);
kfree(addrmap);
kfree(addrinfo);
--
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