linux-kernel - Function Profiler broken on today's linux-next

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-next>] [day] [month] [year] [list]

Message-ID: <20140716162328.GJ1365@saruman.home>
Date:	Wed, 16 Jul 2014 11:23:28 -0500
From:	Felipe Balbi <balbi@...com>
To:	<will.deacon@....com>, <rostedt@...dmis.org>, <mingo@...hat.com>
CC:	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>
Subject: Function Profiler broken on today's linux-next

Hi folks,

I was trying to use Kernel Function Profiler to figure out why my
driver's IRQ handler is taking so much CPU time but to my surprise,
whenever I try to trace anything, I get a "Unable to handle kernel
paging request at virtual address XXXX" error.

Is anybody else seen that or did I screw up my Kernel config ?

cheers

ps: I have tried tracing a few different drivers and they all trigger
the same problem.

-- 
balbi

Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)