Re: [PATCH 5/3 cgroup/for-5.2-fixes] cgroup: Fix css_task_iter_advance_css_set() cset skip condition

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To: Greg KH <greg@xxxxxxxxx>
Subject: Re: [PATCH 5/3 cgroup/for-5.2-fixes] cgroup: Fix css_task_iter_advance_css_set() cset skip condition
From: Tejun Heo <tj@xxxxxxxxxx>
Date: Mon, 5 Aug 2019 10:36:14 -0700
Cc: Li Zefan <lizefan@xxxxxxxxxx>, Topi Miettinen <toiwoton@xxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, cgroups@xxxxxxxxxxxxxxx, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, security@xxxxxxxxxx, Lennart Poettering <lennart@xxxxxxxxxxxxxx>, security@xxxxxxxxxx
In-reply-to: <20190802075709.GH26174@kroah.com>
References: <20190529003601.GN374014@devbig004.ftw2.facebook.com> <e45d974b-5eff-f781-291f-ddf5e9679e4c@gmail.com> <20190530183556.GR374014@devbig004.ftw2.facebook.com> <20190530183637.GS374014@devbig004.ftw2.facebook.com> <20190530183700.GT374014@devbig004.ftw2.facebook.com> <20190530183845.GU374014@devbig004.ftw2.facebook.com> <20190531174028.GG374014@devbig004.ftw2.facebook.com> <20190605170333.GQ374014@devbig004.ftw2.facebook.com> <20190610161619.GB3341036@devbig004.ftw2.facebook.com> <20190802075709.GH26174@kroah.com>
User-agent: Mutt/1.5.21 (2010-09-15)

Hello, Greg.

On Fri, Aug 02, 2019 at 09:57:09AM +0200, Greg KH wrote:
> These all made it into 5.2 now.  Should they also be backported to 4.19
> and/or any older stable kernels?

Yeah, I guess it should have seen enough exposure now.  I think it
makes sense to backport them given the screwy failure mode it fixes.

Thanks.

-- 
tejun

Follow-Ups:
- Re: [PATCH 5/3 cgroup/for-5.2-fixes] cgroup: Fix css_task_iter_advance_css_set() cset skip condition
  - From: Greg KH

References:
- [PATCH 1/3 cgroup/for-5.2-fixes] cgroup: Call cgroup_release() before __exit_signal()
  - From: Tejun Heo
- [PATCH 2/3 cgroup/for-5.2-fixes] cgroup: Implement css_task_iter_skip() before __exit_signal()
  - From: Tejun Heo
- [PATCH 3/3 cgroup/for-5.2-fixes] cgroup: Include dying leaders with live threads in PROCS iterations
  - From: Tejun Heo
- Re: [PATCH 3/3 cgroup/for-5.2-fixes] cgroup: Include dying leaders with live threads in PROCS iterations
  - From: Tejun Heo
- Re: [PATCH 3/3 cgroup/for-5.2-fixes] cgroup: Include dying leaders with live threads in PROCS iterations
  - From: Tejun Heo
- [PATCH 4/3 cgroup/for-5.2-fixes] cgroup: css_task_iter_skip()'d iterators must be advanced before accessed
  - From: Tejun Heo
- [PATCH 5/3 cgroup/for-5.2-fixes] cgroup: Fix css_task_iter_advance_css_set() cset skip condition
  - From: Tejun Heo
- Re: [PATCH 5/3 cgroup/for-5.2-fixes] cgroup: Fix css_task_iter_advance_css_set() cset skip condition
  - From: Greg KH

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