On Mon, 28 Nov 2016 00:03:12 -0500
Zygo Blaxell <ce3g8jdj@xxxxxxxxxxxxxxxxxxxxx> wrote:
> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
> index 8e3a5a2..b1314d6 100644
> --- a/fs/btrfs/inode.c
> +++ b/fs/btrfs/inode.c
> @@ -6803,6 +6803,12 @@ static noinline int uncompress_inline(struct btrfs_path *path,
> max_size = min_t(unsigned long, PAGE_SIZE, max_size);
> ret = btrfs_decompress(compress_type, tmp, page,
> extent_offset, inline_size, max_size);
> + WARN_ON(max_size > PAGE_SIZE);
> + if (max_size < PAGE_SIZE) {
> + char *map = kmap(page);
> + memset(map + max_size, 0, PAGE_SIZE - max_size);
> + kunmap(page);
> + }
> kfree(tmp);
> return ret;
> }
Wasn't this already posted as:
btrfs: fix silent data corruption while reading compressed inline extents
https://patchwork.kernel.org/patch/9371971/
but you don't indicate that's a V2 or something, and in fact the patch seems
exactly the same, just the subject and commit message are entirely different.
Quite confusing.
--
With respect,
Roman
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