netdev - Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable

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:	Tue, 20 Mar 2007 10:27:00 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andi Kleen <ak@...e.de>
cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	David Miller <davem@...emloft.net>,
	virtualization@...ts.linux-foundation.org, jbeulich@...ell.com,
	jeremy@...p.org, xen-devel@...ts.xensource.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	chrisw@...s-sol.org, virtualization@...ts.osdl.org,
	anthony@...emonkey.ws, akpm@...ux-foundation.org, mingo@...e.hu
Subject: Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops
 callsites to make them patchable

On Tue, 20 Mar 2007, Andi Kleen wrote:
> 
> The code never did that. In fact many of the problems we had initially
> especially came out of that -- the fallback code that would handle
> this case wasn't fully correct.

I don't keep my emails any more, but you *never* fixed the problems in 
arch/*/kernel/traps.c.

Yes, the kernel/unwind.c issues generally got fixed. The infinite loops in 
the *callers* never did.

> Also frankly often your analysis about what went wrong was just
> incorrect.

Still in denial, I see.

Do you still claim that "the fallback position always did the right 
thing"? Despite the fact that the unwinder had sometimes *corrupted* the 
incoming information so much that the fallback position was the one that 
oopsed? And no, you didn't fix that.

And no, IT DID NOT use probe_kernel_address like you still claim.

Anyway, you work for Suse, I don't care what you do to the Suse kernel. 
Maybe it will get stable some day. Somehow, I doubt it. 

			Linus
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html