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| author | Alex Shi <alex.shi@linaro.org> | 2017-02-10 12:00:58 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2017-02-10 12:00:58 +0800 |
| commit | fd0d0fd17f47e0015e5be2a1e58434144a5f99e0 (patch) | |
| tree | f2cb780174ccdee6d1a95fd421ef7bcf1dd4be1c /fs/ext4/super.c | |
| parent | d69f58e2b8396658b7577113f9887bd4d66d25f8 (diff) | |
| parent | 6a1bd90632464c129ad5f9ca7c54917a6dd7cb4b (diff) | |
Merge tag 'v4.4.48' into linux-linaro-lsk-v4.4
This is the 4.4.48 stable release
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 68640e6f95c5..b405a7b74ce0 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3663,6 +3663,15 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb))); db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); + if (ext4_has_feature_meta_bg(sb)) { + if (le32_to_cpu(es->s_first_meta_bg) >= db_count) { + ext4_msg(sb, KERN_WARNING, + "first meta block group too large: %u " + "(group descriptor block count %u)", + le32_to_cpu(es->s_first_meta_bg), db_count); + goto failed_mount; + } + } sbi->s_group_desc = ext4_kvmalloc(db_count * sizeof(struct buffer_head *), GFP_KERNEL); |