linux-kernel - [PATCH for-6.12 0/4] block, bfq: fix corner cases related to bfqq merging

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-next>] [day] [month] [year] [list]

Message-Id: <20240902130329.3787024-1-yukuai1@huaweicloud.com>
Date: Mon,  2 Sep 2024 21:03:25 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: jack@...e.cz,
	tj@...nel.org,
	josef@...icpanda.com,
	axboe@...nel.dk,
	paolo.valente@...more.it,
	mauro.andreolini@...more.it,
	avanzini.arianna@...il.com
Cc: cgroups@...r.kernel.org,
	linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	yukuai3@...wei.com,
	yukuai1@...weicloud.com,
	yi.zhang@...wei.com,
	yangerkun@...wei.com
Subject: [PATCH for-6.12 0/4] block, bfq: fix corner cases related to bfqq merging

From: Yu Kuai <yukuai3@...wei.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(-)

-- 
2.39.2