linux-kernel - Re: Status on CPU hotplug 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:	Sat, 7 Oct 2006 21:57:49 +0000
From:	Pavel Machek <pavel@....cz>
To:	Bryce Harrington <bryce@...l.org>
Cc:	Andrew Morton <akpm@...l.org>, vatsa@...ibm.com, torvalds@...l.org,
	linux-kernel@...r.kernel.org, shaohua.li@...el.com,
	hotplug_sig@...l.org, lhcs-devel@...ts.sourceforge.net
Subject: Re: Status on CPU hotplug issues

Hi!

> 1.  Oops offlining cpu twice on AMD64 (but not on EM64t)
>     with the 2.6.18-git22 kernel
> 
>     Reported to hotplug lists 10/05:
>       http://lists.osdl.org/pipermail/hotplug_sig/2006-October/000680.html
> 
>     To recreate: offline, online, and then offline a CPU, then oopses
>       http://crucible.osdl.org/runs/2397/sysinfo/amd01.console
>       http://crucible.osdl.org/runs/2397/sysinfo/amd01.2/proc/config
> 
>     Here's a snippet of the oops:
> 
> # echo 0 > /sys/devices/system/cpu/cpu1/online
> 
>  Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP:
>  [<ffffffff80255287>] __drain_pages+0x29/0x5f
> PGD 7e56d067 PUD 7ee80067 PMD 0
> Oops: 0000 [1] PREEMPT SMP
> CPU 0
> Modules linked in:
> Pid: 7203, comm: bash Tainted: G   M  2.6.18-git22 #1
                                 ~~~~~
kernel is unhappy here. Forced module unload?

-- 
Thanks for all the (sleeping) penguins.
-
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/