linux-kernel - Re: [DRM] BUG: sleeping function called from invalid context, drm

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] [day] [month] [year] [list]

Date:	Wed, 11 Aug 2010 16:17:33 +0200
From:	Luca Tettamanti <kronos.it@...il.com>
To:	Dave Airlie <airlied@...il.com>
Cc:	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [DRM] BUG: sleeping function called from invalid context, 
	drm_lastclose

On Wed, Aug 11, 2010 at 10:50 AM, Dave Airlie <airlied@...il.com> wrote:
> On Wed, Aug 11, 2010 at 6:48 PM, Luca Tettamanti <kronos.it@...il.com> wrote:
>> Hi Arnd,
>> this commit:
>>
>> commit 58374713c9dfb4d231f8c56cac089f6fbdedc2ec
>> Author: Arnd Bergmann <arnd@...db.de>
>> Date:   Sat Jul 10 23:51:39 2010 +0200
>>
>>    drm: kill BKL from common code
>>
>>
>> moved the call to (inside drm_release) drm_lastclose inside dev->count_lock
>> spinlock.
>> drm_lastclose however takes dev->struct_mutex (now inside an atomic
>> context):
>
> I have a patch from Chris Wilson that I need to push to fix this,
> basically reducing the spin lock coverage,
> and relying on the global mutex to handle the open race.

Ok, thank you :)

Luca
--
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/