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Date:   Mon, 20 Aug 2018 18:29:38 +0200
From:   Michal Hocko <mhocko@kernel.org>
To:     Guenter Roeck <linux@roeck-us.net>
Cc:     linux-kernel@vger.kernel.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andi Kleen <ak@linux.intel.com>,
        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
Message-ID: <20180820162938.GR29735@dhcp22.suse.cz>
References: <20180817222733.GA18575@roeck-us.net>
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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.
-- 
Michal Hocko
SUSE Labs