linux-kernel - Re: Oops in trace_hardirqs

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20100927125037.GA4497@alea.gnuu.de>
Date:	Mon, 27 Sep 2010 14:50:37 +0200
From:	Jörg Sommer <joerg@...a.gnuu.de>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: Re: Oops in trace_hardirqs_on (powerpc)

Hello Steven,

Steven Rostedt hat am Wed 22. Sep, 15:44 (-0400) geschrieben:
> Sorry for the late reply, but I was on vacation when you sent this, and
> I missed it while going through email.
> 
> Do you still have this issue?

No. I've rebuild my kernel without TRACE_IRQFLAGS and the problem
vanished, as expected. The problem is, that in some cases the stack is
only two frames deep, which causes the macro CALLER_ADDR1 makes an
invalid access. Someone told me, there a workaround for the problem on
i386, too.

% sed -n 2p arch/x86/lib/thunk_32.S
 * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash)

Bye, Jörg.
-- 
Angenehme Worte sind nie wahr,
wahre Worte sind nie angenehm.

Download attachment "signature.asc" of type "application/pgp-signature" (199 bytes)