linux-kernel - Re: [PATCH v3] sched/numa: fix unsafe get_task_struct() in task_numa

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]

Date:	Mon, 20 Oct 2014 23:34:29 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Kirill Tkhai <tkhai@...dex.ru>
Cc:	Kirill Tkhai <ktkhai@...allels.com>, linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Vladimir Davydov <vdavydov@...allels.com>
Subject: Re: [PATCH v3] sched/numa: fix unsafe get_task_struct() in
	task_numa_assign()

Kirill,

You should be as rude as you can if you send an email to lkml! You
are breaking the well-known rules, and now I have to mimic your wrong
behaviour.

On 10/21, Kirill Tkhai wrote:
>
> No, I won't send. Please do this. Your idea and your patch is almost
> ready. Thanks :)

Come on. You have found the nontrivial problem. This is much more
important than a simple fix.

And if we prefer a less-trivial fix which plays with ->curr recheck,
then it will be based on your idea, not mine.

So please make a patch after we know what Peter thinks.

Oleg.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/