linux-kernel - Re: [PATCH v8 8/8] livepatch: Detect offset for the ftrace location during build

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Message-ID: <20160216103907.GB25103@lst.de>
Date:	Tue, 16 Feb 2016 11:39:07 +0100
From:	Torsten Duwe <duwe@....de>
To:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
Cc:	Petr Mladek <pmladek@...e.com>,
	Balbir Singh <bsingharora@...il.com>,
	Jessica Yu <jeyu@...hat.com>, linux-kernel@...r.kernel.org,
	Steven Rostedt <rostedt@...dmis.org>,
	Jiri Kosina <jkosina@...e.cz>, live-patching@...r.kernel.org,
	Miroslav Benes <mbenes@...e.cz>, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v8 8/8] livepatch: Detect offset for the ftrace
	location during build

On Tue, Feb 16, 2016 at 04:00:30PM +0530, Kamalesh Babulal wrote:
> * Torsten Duwe <duwe@....de> [2016-02-16 09:23:02]:
> > 
> > N.b.: if you try to livepatch/trace such a leaf function without
> > global dependencies, it will crash if that function got called with
> > a different TOC value. Hence this whole testing.
> > 
> 
> I am running out of ideas on how to generate this crash, any pointers
> will be helpful.

Petr discovered some modular SCSI helper function does it.

HTH,
	Torsten