Re: [ANNOUNCE] kmemcheck v7

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To: Vegard Nossum <vegard.nossum@...>
Cc: Bart Van Assche <bart.vanassche@...>, John Reiser <jreiser@...>, Pekka Enberg <penberg@...>, Linux Kernel Mailing List <linux-kernel@...>, Ingo Molnar <mingo@...>, Peter Zijlstra <a.p.zijlstra@...>, Paul E. McKenney <paulmck@...>, Christoph Lameter <clameter@...>, Daniel Walker <dwalker@...>, Andi Kleen <andi@...>, Randy Dunlap <randy.dunlap@...>, Josh Aune <luken@...>, Pekka Paalanen <pq@...>
Date: Saturday, May 10, 2008 - 8:37 am

>  - kmemcheck can only warn for dynamic memory, whereas kmemcheck I

I don't think that's true. valgrind can only detect uninitialized 
local variables in one special case (first use of the stack region).
But as soon as you reuse stack which is pretty common it won't 
be able to detect the next uninitialized use in a stack frame. 

Luckily the compilers do a reasonable job at detecting them at build time.

And static/global variables are never uninitialized in C.

-Andi
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Messages in current thread:
[ANNOUNCE] kmemcheck v7, Vegard Nossum, (Fri Apr 4, 9:44 am)
Re: [ANNOUNCE] kmemcheck v7, Bart Van Assche, (Sat May 10, 5:07 am)
Re: [ANNOUNCE] kmemcheck v7, Pekka Enberg, (Sat May 10, 5:06 am)
Re: [ANNOUNCE] kmemcheck v7, Bart Van Assche, (Sat May 10, 7:04 am)
Re: [ANNOUNCE] kmemcheck v7, Vegard Nossum, (Sat May 10, 8:02 am)
Re: [ANNOUNCE] kmemcheck v7, John Reiser, (Sun May 11, 8:08 am)
Re: [ANNOUNCE] kmemcheck v7, Jeremy Fitzhardinge, (Sat May 10, 1:17 pm)
Re: [ANNOUNCE] kmemcheck v7, Jeff Dike, (Sat May 10, 4:35 pm)
Re: [ANNOUNCE] kmemcheck v7, John Reiser, (Sun May 11, 7:23 am)
Re: [ANNOUNCE] kmemcheck v7, Bart Van Assche, (Sat May 10, 9:29 am)
Re: [ANNOUNCE] kmemcheck v7, Andi Kleen, (Sat May 10, 8:37 am)
Re: [ANNOUNCE] kmemcheck v7, Jeremy Fitzhardinge, (Sat May 10, 1:17 pm)
Re: [ANNOUNCE] kmemcheck v7, Andi Kleen, (Sat May 10, 1:48 pm)
Re: [ANNOUNCE] kmemcheck v7, Jeremy Fitzhardinge, (Sat May 10, 4:45 pm)
Re: [ANNOUNCE] kmemcheck v7, John Reiser, (Sat May 10, 5:29 pm)
Re: [ANNOUNCE] kmemcheck v7, Jeremy Fitzhardinge, (Sat May 10, 7:05 pm)
Re: [ANNOUNCE] kmemcheck v7, Andi Kleen, (Sat May 10, 5:31 pm)
Re: [ANNOUNCE] kmemcheck v7, Jeremy Fitzhardinge, (Sat May 10, 6:59 pm)
Re: [ANNOUNCE] kmemcheck v7, Bart Van Assche, (Sat May 10, 9:22 am)
[PATCH 3/3] slub: add hooks for kmemcheck, Vegard Nossum, (Fri Apr 4, 9:47 am)
[PATCH 2/3] x86: add hooks for kmemcheck, Vegard Nossum, (Fri Apr 4, 9:46 am)
[PATCH 1/3] kmemcheck: add the kmemcheck core, Vegard Nossum, (Fri Apr 4, 9:45 am)