linux-kernel - Re: [PATCH] block: fix ioprio_get(IOPRIO_WHO

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Message-Id: <163916077449.627295.16747606305851596098.b4-ty@kernel.dk>
Date:   Fri, 10 Dec 2021 11:26:14 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     linux-kernel@...r.kernel.org, Davidlohr Bueso <dbueso@...e.de>,
        oleg@...hat.com, linux-block@...r.kernel.org
Subject: Re: [PATCH] block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)

On Fri, 10 Dec 2021 10:20:58 -0800, Davidlohr Bueso wrote:
> do_each_pid_thread(PIDTYPE_PGID) can race with a concurrent
> change_pid(PIDTYPE_PGID) that can move the task from one hlist
> to another while iterating. Serialize ioprio_get to take
> the tasklist_lock in this case, just like it's set counterpart.
> 
> 

Applied, thanks!

[1/1] block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)
      commit: e6a59aac8a8713f335a37d762db0dbe80e7f6d38

Best regards,
-- 
Jens Axboe