On Thu, May 17, 2018 at 11:14:46AM +0300, Nikolay Borisov wrote:
> srclen comes from the async_extent struct, which in turns is
> initialized in compress_file_range with the value of "total_compressed",
> and the value there is actually initialized by
> btrfs_compress_pages->lzo_compress_pages (th
On 2018年05月17日 16:19, Qu Wenruo wrote:
>
>
> On 2018年05月17日 16:14, Nikolay Borisov wrote:
>>
>>
>> On 17.05.2018 09:27, Qu Wenruo wrote:
>>> James Harvey reported that some corrupted compressed extent data can
>>> lead to various kernel memory corruption.
>>>
>>> Such corrupted extent data belo
On 2018年05月17日 16:14, Nikolay Borisov wrote:
>
>
> On 17.05.2018 09:27, Qu Wenruo wrote:
>> James Harvey reported that some corrupted compressed extent data can
>> lead to various kernel memory corruption.
>>
>> Such corrupted extent data belongs to inode with NODATASUM flags, thus
>> data csum
On 17.05.2018 09:27, Qu Wenruo wrote:
> James Harvey reported that some corrupted compressed extent data can
> lead to various kernel memory corruption.
>
> Such corrupted extent data belongs to inode with NODATASUM flags, thus
> data csum won't help us detecting such bug.
>
> If lucky enough,
