linux-ext4 - Re: ext4: smp_processor

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:	Fri, 27 Nov 2009 11:32:38 +0100
From:	Tim Blechmann <tim@...ngt.org>
To:	"Leyendecker, Robert" <Robert.Leyendecker@....com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: ext4: smp_processor_id() in preemptible

> I have similar crash, but probably different cause-vector, posted on this list, fedora bugzilla, rt-users but no response so far from anyone. Did you find any work around?  I tried looking at smp code for hints on problem it looks like in my case it could be trying to reschedule work on different CPU at time of crash. However, I admit that I could be way, way off on that cause. In my case, if I hammer my network interface with packets while another app is reading packets, my host locks up and clients are reporting dest unreachables. 
> 
> I don't think I have the problem in non-rt kernel. Have you tried booting without smp support?

i haven't tried to reproduce it since then ... it occurred, when i was
doing some heavy io tasks ...

tim

-- 
tim@...ngt.org
http://tim.klingt.org

Nothing exists until or unless it is observed. An artist is making
something exist by observing it. And his hope for other people is that
they will also make it exist by observing it. I call it 'creative
observation.' Creative viewing.
  William S. Burroughs


Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)