From: Hillf Danton <hdanton@sina.com>
To: Chen Ridong <chenridong@huawei.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>,
tj@kernel.org, bpf@vger.kernel.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH -v2] cgroup: fix deadlock caused by cgroup_mutex and cpu_hotplug_lock
Date: Thu, 25 Jul 2024 19:01:11 +0800 [thread overview]
Message-ID: <20240725110111.2063-1-hdanton@sina.com> (raw)
In-Reply-To: <53ed023b-c86c-498a-b1fc-2b442059f6af@huawei.com>
On Thu, 25 Jul 2024 09:48:36 +0800 Chen Ridong <chenridong@huawei.com>
>
> did you mean to say this issue couldn't happen?
>
1) It is deadlock if watchdog work can not complete before any cgroup work.
2) It is not if you could not trigger it with no more than a dozen cgroup works.
Not important, boy, spin with deadlock erased.
next prev parent reply other threads:[~2024-07-25 11:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-19 2:52 [PATCH -v2] cgroup: fix deadlock caused by cgroup_mutex and cpu_hotplug_lock Chen Ridong
2024-07-19 18:54 ` bot+bpf-ci
2024-07-20 3:15 ` bot+bpf-ci
2024-07-24 0:53 ` chenridong
2024-08-01 1:34 ` chenridong
2024-07-24 11:08 ` Hillf Danton
2024-07-25 1:48 ` chenridong
2024-07-25 11:01 ` Hillf Danton [this message]
2024-07-26 13:04 ` Michal Koutný
2024-07-27 10:21 ` chenridong
2024-08-07 13:32 ` Michal Koutný
2024-08-08 2:22 ` chenridong
2024-08-08 17:03 ` Roman Gushchin
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