netdev - Re: [PATCH 1/6] sky2: fix hang on shutdown (and other irq issues)

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:	Thu, 17 Nov 2011 09:01:04 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Sven Joachim <svenjoac@....de>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH 1/6] sky2: fix hang on shutdown (and other irq issues)

On Thu, 17 Nov 2011 09:46:43 +0100
Sven Joachim <svenjoac@....de> wrote:

> On 2011-11-17 00:42 +0100, Stephen Hemminger wrote:
> 
> > There are several problems with recent change to how IRQ's are setup.
> >    * synchronize_irq in sky2_shutdown would hang because there
> >      was no IRQ setup.
> >    * when device was set to down, some IRQ bits left enabled so a
> >      hardware error would produce IRQ with no handler
> >    * quick link on Optima chip set was enabled without handler
> >    * suspend/resume would leave IRQ on with no handler if device
> >      was down
> 
> Unfortunately, this patch does not fix the hang at shutdown for me. :-(

You are probably stuck in some part of the code path in sky2_shutdown.
The best debug for this is sprinkling the code printk's. That is how I
narrowed the problem down to synchronize_irq.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html