linux-kernel - [PATCH] configfs: Remove redundant initialization of 'len'

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1620811079-105280-1-git-send-email-yang.lee@linux.alibaba.com>
Date:   Wed, 12 May 2021 17:17:59 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     jlbec@...lplan.org
Cc:     hch@....de, nathan@...nel.org, ndesaulniers@...gle.com,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        Yang Li <yang.lee@...ux.alibaba.com>
Subject: [PATCH] configfs: Remove redundant initialization of 'len'

variable 'len' is being initialized however
this value is never read as 'len' is assigned a new
value in if statement. Remove the redundant assignment.
At the same time, adjust the declarations order of
variables to keep the "upside-down x-mas tree" look of them.

Cleans up clang warning:
fs/configfs/file.c:147:10: warning: Value stored to 'len' during its
initialization is never read [clang-analyzer-deadcode.DeadStores]

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Fixes: 'commit fa60ce2cb450 ("treewide: remove editor modelines and cruft")'
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---
 fs/configfs/file.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index e26060d..1551b3d 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -141,10 +141,10 @@ static int fill_read_buffer(struct file *file, struct configfs_buffer *buffer)
 configfs_read_bin_file(struct file *file, char __user *buf,
 		       size_t count, loff_t *ppos)
 {
-	struct configfs_fragment *frag = to_frag(file);
 	struct configfs_buffer *buffer = file->private_data;
+	struct configfs_fragment *frag = to_frag(file);
 	ssize_t retval = 0;
-	ssize_t len = min_t(size_t, count, PAGE_SIZE);
+	ssize_t len;
 
 	mutex_lock(&buffer->mutex);
 
-- 
1.8.3.1