linux-kernel - Re: [BUG] TASK_DEAD task is able to be woken up in special condition

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: <CAHGf_=oQb=p9m3v6wJpLpF0SqoPnNaJTSWbiMRbrMxZ5WX_6zg@mail.gmail.com>
Date:	Thu, 26 Jan 2012 16:24:27 -0500
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Mike Galbraith <efault@....de>
Cc:	peterz@...radead.org, oleg@...hat.com, y-goto@...fujitsu.com,
	mingo@...e.hu, kamezawa.hiroyu@...fujitsu.com,
	linux-kernel@...r.kernel.org
Subject: Re: [BUG] TASK_DEAD task is able to be woken up in special condition

>> >>                         task->state = TASK_UNINTERRUPTIBLE;
>> >>                         schedule()
>
> I think you meant:
>        __set_current_state(TASK_UNINTERRUPTIBLE);
>        schedule();
>
> The way you wrote it, task doesn't have to be current, so could be doing
> the bad thing Peter pointed out, diddling *another* tasks ->state.

Silly me. Thank you for following up me.
--
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/