From: Andi Kleen <ak@linux.intel.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>,
linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Dave Hansen <dave.hansen@intel.com>,
David Woodhouse <dwmw@amazon.co.uk>,
x86@kernel.org, dvyukov@google.com, hughd@google.com,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: Crash in MM code in v4.4.y, v4.9.y with TRANSPARENT_HUGEPAGE enabled
Date: Mon, 20 Aug 2018 13:18:43 -0700 [thread overview]
Message-ID: <20180820201843.GA15008@tassilo.jf.intel.com> (raw)
In-Reply-To: <20180820180353.GO12066@tassilo.jf.intel.com>
On Mon, Aug 20, 2018 at 11:03:53AM -0700, Andi Kleen wrote:
> On Mon, Aug 20, 2018 at 06:29:38PM +0200, Michal Hocko wrote:
> > On Fri 17-08-18 15:27:33, Guenter Roeck wrote:
> > > Hi,
> > >
> > > the following crash is seen in v4.4.148, v4.4.149, v4.9.120, and v4.9.121
> > > with CONFIG_TRANSPARENT_HUGEPAGE=y, CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y.
> >
> > Could you try to apply fd7e315988b7 ("x86/mm: Simplify p[g4um]d_page()
> > macros"). I do not see it in stable 4.4 tree and it has been introduced
> > much later in 4.14. This one gave us quite some headache because it is
> > soooo easy to overlook.
>
> Good catch!
>
> I tested that with 4.9 and backporting the patch indeed fixes the
> syzcaller test case running in a KVM VM. Backported patch appended.
Tested on 4.4 too and it fixes the syzkaller test case there too.
-Andi
next prev parent reply other threads:[~2018-08-20 20:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-17 22:27 Crash in MM code in v4.4.y, v4.9.y with TRANSPARENT_HUGEPAGE enabled Guenter Roeck
2018-08-17 22:39 ` Crash in MM code in v4.4.y, v4.9.y with TRANSPARENT_HUGEPAGE enabledg Andi Kleen
2018-08-17 22:47 ` Guenter Roeck
2018-08-18 0:25 ` Crash in MM code in v4.4.y, v4.9.y with TRANSPARENT_HUGEPAGE enabled Linus Torvalds
2018-08-18 0:44 ` Guenter Roeck
2018-08-18 2:46 ` Andi Kleen
2018-08-20 16:29 ` Michal Hocko
2018-08-20 18:03 ` Andi Kleen
2018-08-20 19:12 ` Michal Hocko
2018-08-20 20:18 ` Andi Kleen [this message]
2018-08-21 13:58 ` Guenter Roeck
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180820201843.GA15008@tassilo.jf.intel.com \
--to=ak@linux.intel.com \
--cc=aarcange@redhat.com \
--cc=dave.hansen@intel.com \
--cc=dvyukov@google.com \
--cc=dwmw@amazon.co.uk \
--cc=gregkh@linuxfoundation.org \
--cc=hughd@google.com \
--cc=jpoimboe@redhat.com \
--cc=kirill.shutemov@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@roeck-us.net \
--cc=mhocko@kernel.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.