diff options
| author | Phillip Lougher <phillip@squashfs.org.uk> | 2012-01-02 17:47:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-02 09:47:54 -0700 |
| commit | 9523d5244a925f514e5daf04e5030a68e91f55cd (patch) | |
| tree | 1ced9fd2e8218b16db51ffb7e89e0637203a6ea0 /fs | |
| parent | b960ba52595157ae215c4e899e9da99fbc81959a (diff) | |
Squashfs: fix mount time sanity check for corrupted superblock
commit cc37f75a9ffbbfcb1c3297534f293c8284e3c5a6 upstream.
A Squashfs filesystem containing nothing but an empty directory,
although unusual and ultimately pointless, is still valid.
The directory_table >= next_table sanity check rejects these
filesystems as invalid because the directory_table is empty and
equal to next_table.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/squashfs/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index 7438850c62d..b5a8636e53d 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -290,7 +290,7 @@ handle_fragments: check_directory_table: /* Sanity check directory_table */ - if (msblk->directory_table >= next_table) { + if (msblk->directory_table > next_table) { err = -EINVAL; goto failed_mount; } |