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authorMichael Holzheu <holzheu@de.ibm.com>2006-09-20 16:00:04 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-20 16:00:04 +0200
commit388c571cffc4ae4e64f0786333e811308acbbc10 (patch)
tree98bfa69fe8fa4cae331ccfa46118e40d1e80d389 /arch/s390/hypfs
parent564337f34cc10fd8f30329e4e5f14f8995db5711 (diff)
downloadlinux-linaro-android-388c571cffc4ae4e64f0786333e811308acbbc10.tar.gz
[S390] hypfs crashes with invalid mount option.
When an invalid mount option is specified, no root inode is created for hypfs, hypfs_fill_super() returns with -EINVAL and then hypfs_kill_super() is called. hypfs_kill_super() does not check if the root inode has been initialized. This patch adds this check. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/hypfs')
-rw-r--r--arch/s390/hypfs/inode.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index bdcad2ea1ff..bdade5f2e32 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -312,10 +312,12 @@ static void hypfs_kill_super(struct super_block *sb)
{
struct hypfs_sb_info *sb_info = sb->s_fs_info;
- hypfs_delete_tree(sb->s_root);
- hypfs_remove(sb_info->update_file);
- kfree(sb->s_fs_info);
- sb->s_fs_info = NULL;
+ if (sb->s_root) {
+ hypfs_delete_tree(sb->s_root);
+ hypfs_remove(sb_info->update_file);
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+ }
kill_litter_super(sb);
}