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misc: tizen-inform-reboot: fix a potential NULL pointer dereference
author
Jaehoon Chung
<jh80.chung@samsung.com>
Fri, 16 Apr 2021 02:18:41 +0000
(11:18 +0900)
committer
Hoegeun Kwon
<hoegeun.kwon@samsung.com>
Thu, 3 Aug 2023 08:46:14 +0000
(17:46 +0900)
Fix a potential NULL pointer dereference.
If there is no file or directory, it has to check whether it's error or
not.
Change-Id: Ia6e7280c1901ae772a5f890c312b7a741fbac0a1
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
drivers/misc/tizen-inform-reboot.c
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diff --git
a/drivers/misc/tizen-inform-reboot.c
b/drivers/misc/tizen-inform-reboot.c
index
affc54a
..
9a9ed92
100644
(file)
--- a/
drivers/misc/tizen-inform-reboot.c
+++ b/
drivers/misc/tizen-inform-reboot.c
@@
-27,7
+27,7
@@
static int inform_reboot_notifier(struct notifier_block *nb,
mm_segment_t old_fs = force_uaccess_begin();
file = filp_open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0644);
- if (
file
) {
+ if (
!IS_ERR(file)
) {
struct super_block *sb = file->f_path.dentry->d_sb;
if (cmd) {