linux-kernel - [PATCH 0/6] fix uaf in rq_qos_done

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Date:   Thu, 23 Sep 2021 21:46:25 +0800
From:   Yu Kuai <yukuai3@...wei.com>
To:     <axboe@...nel.dk>, <tj@...nel.org>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <cgroups@...r.kernel.org>, <yukuai3@...wei.com>,
        <yi.zhang@...wei.com>
Subject: [PATCH 0/6] fix uaf in rq_qos_done_io()

This patch set tries to fix the uaf when bio_endio() is called from
error path and is concurrent with blk_cleanup_queue().

Yu Kuai (6):
  rq-qos: introduce rq_qos_free()
  blk-wbt: introduce wbt_free()
  io-cost: introduce ioc_rqos_free()
  blk-iolatency: splict blkcg_iolatency_free() from
    blkcg_iolatency_exit()
  blk-ioprio: introduce blkcg_ioprio_free()
  rq-qos: fix uaf in rq_qos_done_io()

 block/blk-iocost.c    |  7 +++++++
 block/blk-iolatency.c |  7 +++++++
 block/blk-ioprio.c    |  7 ++++++-
 block/blk-rq-qos.c    | 12 +++++++++++-
 block/blk-rq-qos.h    |  2 ++
 block/blk-sysfs.c     |  1 +
 block/blk-wbt.c       |  7 +++++++
 7 files changed, 41 insertions(+), 2 deletions(-)

-- 
2.31.1