linux-kernel - Re: khugepaged / firefox going wild in 3.18-rc

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]

Message-ID: <20141107130717.GF11838@auth.logic.tuwien.ac.at>
Date:	Fri, 7 Nov 2014 22:07:17 +0900
From:	Norbert Preining <preining@...ic.at>
To:	Vlastimil Babka <vbabka@...e.cz>
Cc:	David Rientjes <rientjes@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: khugepaged / firefox going wild in 3.18-rc

Hi Vlastimil,

On Thu, 06 Nov 2014, Vlastimil Babka wrote:
> OK, one possibility is to do (it should apply cleanly)
> git revert e14c720efdd73c6d69cd8d07fa894bcd11fe1973

I am running with this reverted now, and I cannot reproduce the
khugepage going overboard anymore.

I tried hard since 2 days now, no chance to reproduce.
Before firefox or shotwell went into boom mode, but not now.
(For now!)

> > Again, as I mentioned, I don't have /proc/pid/stack for any "pid", is
> > this depending on some specific kerenl option?
> 
> Ah I missed that. Should be CONFIG_STACKTRACE to enable that.

If you want, I can compile a "default" kernel without the above commit
reverted, and turn on STACKTRACE (I have turned it one for *all* future
kernels I compile ;-)

I also didn't try the patch you send me, just the revert from above.

Please let me know which other experiments you want to see.

Thanks

Norbert

------------------------------------------------------------------------
PREINING, Norbert                               http://www.preining.info
JAIST, Japan                                 TeX Live & Debian Developer
GPG: 0x860CDC13   fp: F7D8 A928 26E3 16A1 9FA0  ACF0 6CAC A448 860C DC13
------------------------------------------------------------------------
--
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/