On 09/01/2017 06:24 AM, kusumi.tomohiro@xxxxxxxxx wrote:
> From: Tomohiro Kusumi <tkusumi@xxxxxxxxxx>
>
> 8c43ba62('filesetup: align layout buffer') needs to use the same size
> for fio_memalign() and fio_memfree().
>
> If the size `bs' gets decreased while in the write(2) loop, the size
> for freeing is smaller than it should be, and results in segfault
> by dereferencing ->offset of the footer via irrelevant address somewhere
> in user data.
Good catch, should have been reviewed more carefully. Applied.
--
Jens Axboe
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