From: Sanidhya Kashyap <sanidhya.gatech@gmail.com>
Date: Sat, 21 Mar 2015 16:57:50 +0000 (-0400)
Subject: hpfs: kstrdup() out of memory handling
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ce657611baf9;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

hpfs: kstrdup() out of memory handling

There is a possibility of nothing being allocated to the new_opts in
case of memory pressure, therefore return ENOMEM for such case.

Signed-off-by: Sanidhya Kashyap <sanidhya.gatech@gmail.com>
Signed-off-by: Mikulas Patocka <mikulas@twibright.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 0642516d36c8..cde044d41f69 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -451,11 +451,14 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
 	int o;
 	struct hpfs_sb_info *sbi = hpfs_sb(s);
 	char *new_opts = kstrdup(data, GFP_KERNEL);
-	
+
+	if (!new_opts)
+		return -ENOMEM;
+
 	sync_filesystem(s);
 
 	*flags |= MS_NOATIME;
-	
+
 	hpfs_lock(s);
 	uid = sbi->sb_uid; gid = sbi->sb_gid;
 	umask = 0777 & ~sbi->sb_mode;