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-rw-r--r--fs/squashfs/super.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index ffa6edcd2d0..0adc624c956 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -157,6 +157,16 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
if (msblk->block_size > SQUASHFS_FILE_MAX_SIZE)
goto failed_mount;
+ /*
+ * Check the system page size is not larger than the filesystem
+ * block size (by default 128K). This is currently not supported.
+ */
+ if (PAGE_CACHE_SIZE > msblk->block_size) {
+ ERROR("Page size > filesystem block size (%d). This is "
+ "currently not supported!\n", msblk->block_size);
+ goto failed_mount;
+ }
+
msblk->block_log = le16_to_cpu(sblk->block_log);
if (msblk->block_log > SQUASHFS_FILE_MAX_LOG)
goto failed_mount;