linux-kernel - [PATCH 0/3] blk-cgroup: cleanup and bugfixs in blk-cgroup

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: <20260108014416.3656493-1-zhengqixing@huaweicloud.com>
Date: Thu,  8 Jan 2026 09:44:13 +0800
From: Zheng Qixing <zhengqixing@...weicloud.com>
To: tj@...nel.org,
	josef@...icpanda.com,
	axboe@...nel.dk,
	yukuai@...as.com
Cc: cgroups@...r.kernel.org,
	linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	yi.zhang@...wei.com,
	yangerkun@...wei.com,
	houtao1@...wei.com,
	zhengqixing@...wei.com
Subject: [PATCH 0/3] blk-cgroup: cleanup and bugfixs in blk-cgroup

From: Zheng Qixing <zhengqixing@...wei.com>

Hi,

This series contains three patches.

Patch 1 is a cleanup change which extracts the common teardown sequence
into a helper.

Patches 2 and 3 fix a use-after-free issue triggered by the concurrency
between switching the device I/O scheduler and blkcg deletion.

Zheng Qixing (3):
  blk-cgroup: factor policy pd teardown loop into helper
  blk-cgroup: fix uaf in blkcg_activate_policy() racing with
    blkg_free_workfn()
  blk-cgroup: skip dying blkg in blkcg_activate_policy()

 block/blk-cgroup.c | 63 +++++++++++++++++++++++-----------------------
 1 file changed, 31 insertions(+), 32 deletions(-)

-- 
2.39.2