drm/rockchip: add support for src1

[firefly-linux-kernel-4.4.55.git] / fs / ext4 / balloc.c

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index fe1f50fe764ff9238354e2e30491c6e1e6d149b9..f97110461c196b2b770baa7d2e0b7694cb750fa2 100644 (file)
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -208,6 +208,9 @@ static int ext4_init_block_bitmap(struct super_block *sb,
        memset(bh->b_data, 0, sb->s_blocksize);
 
        bit_max = ext4_num_base_meta_clusters(sb, block_group);
+       if ((bit_max >> 3) >= bh->b_size)
+               return -EFSCORRUPTED;
+
        for (bit = 0; bit < bit_max; bit++)
                ext4_set_bit(bit, bh->b_data);