diff options
| -rw-r--r-- | fs/ufs/super.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 261a1c2f22d..e1c1fc5ee23 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -636,6 +636,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent) unsigned block_size, super_block_size; unsigned flags; unsigned super_block_offset; + unsigned maxsymlen; int ret = -EINVAL; uspi = NULL; @@ -1069,6 +1070,16 @@ magic_found: uspi->s_maxsymlinklen = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); + if (uspi->fs_magic == UFS2_MAGIC) + maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); + else + maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); + if (uspi->s_maxsymlinklen > maxsymlen) { + ufs_warning(sb, __func__, "ufs_read_super: excessive maximum " + "fast symlink size (%u)\n", uspi->s_maxsymlinklen); + uspi->s_maxsymlinklen = maxsymlen; + } + inode = ufs_iget(sb, UFS_ROOTINO); if (IS_ERR(inode)) { ret = PTR_ERR(inode); |