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hpfs: kstrdup() out of memory handling

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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>
This commit is contained in:
Sanidhya Kashyap 2015-03-21 12:57:50 -04:00 committed by Linus Torvalds
parent d7b04097c2
commit ce657611ba
1 changed files with 5 additions and 2 deletions
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7
fs/hpfs/super.c
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@ -451,11 +451,14 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
int o; int o;
struct hpfs_sb_info *sbi = hpfs_sb(s); struct hpfs_sb_info *sbi = hpfs_sb(s);
char *new_opts = kstrdup(data, GFP_KERNEL); char *new_opts = kstrdup(data, GFP_KERNEL);
if (!new_opts)
return -ENOMEM;
sync_filesystem(s); sync_filesystem(s);
*flags |= MS_NOATIME; *flags |= MS_NOATIME;
hpfs_lock(s); hpfs_lock(s);
uid = sbi->sb_uid; gid = sbi->sb_gid; uid = sbi->sb_uid; gid = sbi->sb_gid;
umask = 0777 & ~sbi->sb_mode; umask = 0777 & ~sbi->sb_mode;