From ce657611baf902f14ae559ce4e0787ead6712067 Mon Sep 17 00:00:00 2001 From: Sanidhya Kashyap Date: Sat, 21 Mar 2015 12:57:50 -0400 Subject: [PATCH] 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 Signed-off-by: Mikulas Patocka Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- fs/hpfs/super.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) 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;