linux-kernel - Re: [PATCH 5.9] io_uring: fix NULL-mm for linked reqs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Thu, 25 Jun 2020 07:24:21 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Pavel Begunkov <asml.silence@...il.com>, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5.9] io_uring: fix NULL-mm for linked reqs

On 6/25/20 3:38 AM, Pavel Begunkov wrote:
> __io_queue_sqe() tries to handle all request of a link,
> so it's not enough to grab mm in io_sq_thread_acquire_mm()
> based just on the head.
> 
> Don't check req->needs_mm and do it always.

Applied, thanks.

-- 
Jens Axboe