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From: Dave Hansen <dave.hansen@intel.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Huang Ying <ying.huang@intel.com>,
	Minchan Kim <minchan@kernel.org>
Subject: Re: [PATCH] thp, mm: Fix crash due race in MADV_FREE handling
Date: Wed, 28 Jun 2017 07:26:51 -0700	[thread overview]
Message-ID: <ad66e93e-7219-6c07-3d11-43c0b45e3095@intel.com> (raw)
In-Reply-To: <20170628101249.17879-1-kirill.shutemov@linux.intel.com>

I came up with the exact same patch.  For posterity, here's the test
case, generated by syzkaller and trimmed down by Reinette:

	https://www.sr71.net/~dave/intel/log2.c

And the config that helps detect this:

	https://www.sr71.net/~dave/intel/config-log2

Acked-by: Dave Hansen <dave.hansen@intel.com>

  parent reply	other threads:[~2017-06-28 14:27 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-28 10:12 [PATCH] thp, mm: Fix crash due race in MADV_FREE handling Kirill A. Shutemov
2017-06-28 10:15 ` Kirill A. Shutemov
2017-06-29  8:40   ` Minchan Kim
2017-06-29 20:50   ` Andrew Morton
2017-06-30  3:30     ` Kirill A. Shutemov
2017-06-28 14:26 ` Dave Hansen [this message]
2017-06-29 15:46 ` Michal Hocko

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