From: Jens Axboe <axboe@kernel.dk>
To: Yu Kuai <yukuai1@huaweicloud.com>,
jack@suse.cz, tj@kernel.org, josef@toxicpanda.com,
paolo.valente@unimore.it, mauro.andreolini@unimore.it,
avanzini.arianna@gmail.com
Cc: cgroups@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, yukuai3@huawei.com,
yi.zhang@huawei.com, yangerkun@huawei.com
Subject: Re: [PATCH for-6.12 0/4] block, bfq: fix corner cases related to bfqq merging
Date: Tue, 3 Sep 2024 09:51:42 -0600 [thread overview]
Message-ID: <2ee05037-fb4f-4697-958b-46f0ae7d9cdd@kernel.dk> (raw)
In-Reply-To: <20240902130329.3787024-1-yukuai1@huaweicloud.com>
On 9/2/24 7:03 AM, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@huawei.com>
>
> Our syzkaller report a UAF problem(details in patch 1), however it can't
> be reporduced. And this set are some corner cases fix that might be
> related, and they are found by code review.
>
> Yu Kuai (4):
> block, bfq: fix possible UAF for bfqq->bic with merge chain
> block, bfq: choose the last bfqq from merge chain in
> bfq_setup_cooperator()
> block, bfq: don't break merge chain in bfq_split_bfqq()
> block, bfq: use bfq_reassign_last_bfqq() in bfq_bfqq_move()
>
> block/bfq-cgroup.c | 7 +------
> block/bfq-iosched.c | 17 +++++++++++------
> block/bfq-iosched.h | 2 ++
> 3 files changed, 14 insertions(+), 12 deletions(-)
BFQ is effectively unmaintained, and has been for quite a while at
this point. I'll apply these, thanks for looking into it, but I think we
should move BFQ to an unmaintained state at this point.
--
Jens Axboe
next prev parent reply other threads:[~2024-09-03 15:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-02 13:03 [PATCH for-6.12 0/4] block, bfq: fix corner cases related to bfqq merging Yu Kuai
2024-09-02 13:03 ` [PATCH for-6.12 1/4] block, bfq: fix possible UAF for bfqq->bic with merge chain Yu Kuai
2024-09-04 11:51 ` Jan Kara
2024-09-02 13:03 ` [PATCH for-6.12 2/4] block, bfq: choose the last bfqq from merge chain in bfq_setup_cooperator() Yu Kuai
2024-09-04 12:17 ` Jan Kara
2024-09-02 13:03 ` [PATCH for-6.12 3/4] block, bfq: don't break merge chain in bfq_split_bfqq() Yu Kuai
2024-09-04 12:20 ` Jan Kara
2024-09-02 13:03 ` [PATCH for-6.12 4/4] block, bfq: use bfq_reassign_last_bfqq() in bfq_bfqq_move() Yu Kuai
2024-09-04 12:22 ` Jan Kara
2024-09-03 15:51 ` Jens Axboe [this message]
2024-09-04 1:32 ` [PATCH for-6.12 0/4] block, bfq: fix corner cases related to bfqq merging Yu Kuai
2024-09-04 2:28 ` Bart Van Assche
2024-09-04 2:45 ` Yu Kuai
2024-09-04 13:55 ` Jens Axboe
2024-09-04 17:17 ` Bart Van Assche
2024-09-05 1:48 ` Yu Kuai
2024-09-04 4:38 ` Ming Lei
2024-09-04 12:29 ` Jan Kara
2024-09-04 13:49 ` Jens Axboe
2024-09-04 13:53 ` Jens Axboe
2024-09-03 15:56 ` Jens Axboe
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