lkml.org 
[lkml]   [2022]   [Apr]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.10 572/599] proc: bootconfig: Add null pointer check
Date
From: Lv Ruyi <lv.ruyi@zte.com.cn>

commit bed5b60bf67ccd8957b8c0558fead30c4a3f5d3f upstream.

kzalloc is a memory allocation function which can return NULL when some
internal memory errors happen. It is safer to add null pointer check.

Link: https://lkml.kernel.org/r/20220329104004.2376879-1-lv.ruyi@zte.com.cn

Cc: stable@vger.kernel.org
Fixes: c1a3c36017d4 ("proc: bootconfig: Add /proc/bootconfig to show boot config list")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/proc/bootconfig.c | 2 ++
1 file changed, 2 insertions(+)

--- a/fs/proc/bootconfig.c
+++ b/fs/proc/bootconfig.c
@@ -32,6 +32,8 @@ static int __init copy_xbc_key_value_lis
int ret = 0;

key = kzalloc(XBC_KEYLEN_MAX, GFP_KERNEL);
+ if (!key)
+ return -ENOMEM;

xbc_for_each_key_value(leaf, val) {
ret = xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX);

\
 
 \ /
  Last update: 2022-04-06 01:27    [W:1.839 / U:0.592 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site