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
| ||
|
Date: Thu, 5 Feb 2009 02:49:25 +0100 From: "Rafael J. Wysocki" <rjw@...k.pl> To: Andrea Righi <righi.andrea@...il.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Andrey Borzenkov <arvidjaar@...l.ru>, Geert Uytterhoeven <geert@...ux-m68k.org>, "Antonino A. Daplas" <adaplas@...il.com>, linux-fbdev-devel@...ts.sourceforge.net, linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, Dave Jones <davej@...hat.com>, Harvey Harrison <harvey.harrison@...il.com>, Johannes Weiner <hannes@...xchg.org>, Stefan Richter <stefanr@...6.in-berlin.de> Subject: Re: [PATCH -mmotm] fbmem: fix fb_info->lock and mm->mmap_sem circular locking dependency On Thursday 05 February 2009, Rafael J. Wysocki wrote: > On Wednesday 04 February 2009, Andrea Righi wrote: > > Fix this circular locking dependencies in the frame buffer console > > driver pushing down the mutex fb_info->lock. > > > > Circular locking dependecies occur calling the blocking > > fb_notifier_call_chain() with fb_info->lock held. Notifier callbacks can > > try to acquire mm->mmap_sem, while fb_mmap() acquires the locks in the > > reverse order mm->mmap_sem => fb_info->lock. > > Does this fix a Bugzilla bug? If so, then which one? Never mind, found it. Thanks, Rafael -- 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/
Powered by blists - more mailing lists