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hypfs_kill_super(): deal with failed allocations
authorAl Viro <viro@zeniv.linux.org.uk>
Tue, 3 Apr 2018 03:50:31 +0000 (23:50 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 24 Apr 2018 07:36:38 +0000 (09:36 +0200)
commit a24cd490739586a7d2da3549a1844e1d7c4f4fc4 upstream.

hypfs_fill_super() might fail to allocate sbi; hypfs_kill_super()
should not oops on that.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/s390/hypfs/inode.c patch | blob | blame | history

diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index cf8a2d92467f363a6a2195f77a6d07dff2b5d3d0..45eb5999110bed8e40ca1d0690508684422e937a 100644 (file)
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -320,7 +320,7 @@ static void hypfs_kill_super(struct super_block *sb)
 
        if (sb->s_root)
                hypfs_delete_tree(sb->s_root);
-       if (sb_info->update_file)
+       if (sb_info && sb_info->update_file)
                hypfs_remove(sb_info->update_file);
        kfree(sb->s_fs_info);
        sb->s_fs_info = NULL;