linux-kernel - Re: [Patch v5 0/9] liblockdep: userspace lockdep

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:	Mon, 8 Jul 2013 10:39:14 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [Patch v5 0/9] liblockdep: userspace lockdep


* Sasha Levin <sasha.levin@...cle.com> wrote:

> >> The other issue is that with lock classes disabled you have to hit an 
> >> actual deadlock to trigger any output.
> >>
> >> I.e. much of the power of lockdep is diminished :-/ When actual 
> >> deadlocks are triggered then it's not particularly complex to debug 
> >> user-space apps: gdb the hung task(s) and look at the backtraces.
> >
> > Lock classes are disabled only if you're using the LD_PRELOAD method 
> > of testing. If you actually re-compile your code with the library (by 
> > just including the header and setting a #define to enable it) you will 
> > have lock classes.
> 
> Hi Ingo,
> 
> Just wondering if you're planning on pushing it over to Linus from your 
> tree, or should I go ahead and do it on my own?

PeterZ is in favor as well so I'll apply them after the merge window, for 
v3.12.

Thanks,

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/