X-Git-Url: https://git.stricted.de/?a=blobdiff_plain;f=fs%2Fsquashfs%2Fsuper.c;h=29cd014ed3a17a776db73b4c1e492f44d78cba4e;hb=afb9bd704c7116076879352a2cc2c43aa12c1e14;hp=970b1167e7cbda4e106abeb9e574da2726401906;hpb=d61b7a572b292e2be409e13b4b3adf475f18fb29;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 970b1167e7cb..29cd014ed3a1 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -158,10 +158,15 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
 		goto failed_mount;
 	}
 
+	/* Check block log for sanity */
 	msblk->block_log = le16_to_cpu(sblk->block_log);
 	if (msblk->block_log > SQUASHFS_FILE_MAX_LOG)
 		goto failed_mount;
 
+	/* Check that block_size and block_log match */
+	if (msblk->block_size != (1 << msblk->block_log))
+		goto failed_mount;
+
 	/* Check the root inode for sanity */
 	root_inode = le64_to_cpu(sblk->root_inode);
 	if (SQUASHFS_INODE_OFFSET(root_inode) > SQUASHFS_METADATA_SIZE)