linux-kernel - Re: Panic and page fault in loop during handling NMI backtrace handler

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]

Message-ID: <20131015220755.5ee861d5@gandalf.local.home>
Date:	Tue, 15 Oct 2013 22:07:55 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	"Liu, Chuansheng" <chuansheng.liu@...el.com>
Cc:	"Ingo Molnar (mingo@...nel.org)" <mingo@...nel.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"fweisbec@...il.com" <fweisbec@...il.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>,
	"Peter Zijlstra (peterz@...radead.org)" <peterz@...radead.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"'linux-kernel@...r.kernel.org' (linux-kernel@...r.kernel.org)" 
	<linux-kernel@...r.kernel.org>,
	"Wang, Xiaoming" <xiaoming.wang@...el.com>,
	"Li, Zhuangzhi" <zhuangzhi.li@...el.com>
Subject: Re: Panic and page fault in loop during handling NMI backtrace
 handler

On Wed, 16 Oct 2013 01:54:51 +0000
"Liu, Chuansheng" <chuansheng.liu@...el.com> wrote:


> > Since the NMI iretq nesting has been fixed, there's no reason that
> I think you patch fix the infinite loop, we will have a test soon.
> BTW, we are using 3.10, could you help to point out which NMI iretq nesting patch?

There were many. You can read about what was done here:

 https://lwn.net/Articles/484932/

The original is here:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd49c2391773ffbf52bb80d75c4a92b16972517

But more were added.

But that is back in 3.3, so 3.10 has all the required updates.

-- Steve
--
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/