linux-kernel - Re: Regression in suspend to ram in 2.6.31-rc kernels

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: <c4e36d110909111445nb6592cfue01543f5d04c2cda@mail.gmail.com>
Date:	Fri, 11 Sep 2009 23:45:01 +0200
From:	Zdenek Kabelac <zdenek.kabelac@...il.com>
To:	Pavel Machek <pavel@....cz>
Cc:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	Christoph Hellwig <hch@....de>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-mmc@...r.kernel.org, viro@...iv.linux.org.uk
Subject: Re: Regression in suspend to ram in 2.6.31-rc kernels

2009/9/11 Pavel Machek <pavel@....cz>:
>
>> And why suspend of mmc should generate card removal ??
>
> Card is powered down during suspend -> mmc can't guarantee the card is
> same and unchanged -> it makes some sense to simulate
> removal/reinsert.

But how is this going to work when I keep the device mounted and
blockdev is basically destroyed -  what if I'm reading file from card
during suspend ?

>> if I suspend and resume my laptop and I keep the card inside - all
>> those step looks plain wrong.
>
> Unfortunately system can't tell.

Well system could check basic card ids if they match after resume - if
some users wants to crash his card by randomly swapping it during
suspend/resume - I'd have no problem with that....

Zdenek
--
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/