From: Michal Hocko <mhocko@kernel.org>
To: Dave Hansen <dave.hansen@intel.com>
Cc: Richard Biener <rguenther@suse.de>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Kernel bug with MPX?
Date: Fri, 8 Mar 2019 08:12:49 +0100 [thread overview]
Message-ID: <20190308071249.GJ30234@dhcp22.suse.cz> (raw)
In-Reply-To: <ba1d2d3c-e616-611d-3cff-acf6b8aaeb66@intel.com>
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On Thu 07-03-19 12:38:15, Dave Hansen wrote:
> On 3/6/19 12:53 AM, Richard Biener wrote:
> > When running the gcc.target/i386/mpx/memmove-1.c testcase
> > from the GCC 8 branch on MPX capable hardware the testcase
> > faults and the kernel log reports the following:
>
> While I don't doubt that we have some MPX bugs around, I wasn't able to
> reproduce this one with that binary. Is there anything else that would
> help us track this down?
I have simply executed the binary without any special preparation and I
could see the leak information in dmesg
[112423.206497] BUG: Bad rss-counter state mm:000000007aa9c8a7 idx:1 val:25593
I do not see the fault/signal with
$ uname -r
5.0.0-00510-gcd2a3bf02625
though. My config is attached.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2019-03-08 7:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-06 8:53 Richard Biener
2019-03-07 20:38 ` Dave Hansen
2019-03-08 7:12 ` Michal Hocko [this message]
2019-03-08 7:41 ` Michal Hocko
2019-03-13 22:00 ` Dave Hansen
2019-03-14 16:51 ` Dave Hansen
2019-03-18 11:47 ` Michal Hocko
2019-03-18 15:59 ` Dave Hansen
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