linux-kernel - Re: apm emulation driver broken ?

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: <4740992D.9030906@gmail.com>
Date:	Sun, 18 Nov 2007 20:57:33 +0100
From:	Franck Bui-Huu <vagabon.xyz@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	linux-pm@...ts.linux-foundation.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: apm emulation driver broken ?

Rafael J. Wysocki wrote:
> On Saturday, 17 of November 2007, Franck Bui-Huu wrote:
>> ok so now we agreed on this point, can we assert that a user
>> land thread waiting for an event in an UNINTERRUPTIBLE state
>> will prevent a suspend to happen ?
> 
> Yes.
> 

So this driver seems really broken and actually I'm wondering if
it's used by anyone...

See the call to wait_even() made by apm_ioctl(). If any processes
run this, it will prevent the system to suspend...

And no, I don't know why call wait_event() is called.

		Franck
-
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/