linux-kernel - Re: [BUG] possible race between md_free_disk and md_notify

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

Message-ID: <53e93d6e-7b73-968b-c5f2-92d1b124ecd5@huawei.com>
Date: Thu, 20 Feb 2025 11:19:40 +0800
From: Yu Kuai <yukuai3@...wei.com>
To: Guillaume Morin <guillaume@...infr.org>, Yu Kuai <yukuai1@...weicloud.com>
CC: <linux-raid@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<song@...nel.org>
Subject: Re: [BUG] possible race between md_free_disk and md_notify_reboot

Hi,

在 2025/02/20 11:05, Guillaume Morin 写道:
> how it was guaranteed that mddev_get() would fail as mddev_free() does not check or synchronize with the active atomic

Please check how mddev is freed, start from mddev_put(). There might be
something wrong, but it's not what you said.