linux-kernel - Re: [lkp] [mm] 7d2eba0557: BUG: unable to handle kernel NULL pointer dereference at (null)

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Message-ID: <20160120072625.GB2262@uranus>
Date:	Wed, 20 Jan 2016 10:26:25 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Vlastimil Babka <vbabka@...e.cz>
Cc:	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	kernel test robot <ying.huang@...ux.intel.com>,
	Ebru Akagunduz <ebru.akagunduz@...il.com>, lkp@...org,
	LKML <linux-kernel@...r.kernel.org>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>,
	Hugh Dickins <hughd@...gle.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Mel Gorman <mgorman@...e.de>, Xie XiuQi <xiexiuqi@...wei.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Rik van Riel <riel@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [lkp] [mm] 7d2eba0557: BUG: unable to handle kernel NULL pointer
 dereference at (null)

On Wed, Jan 20, 2016 at 12:07:46AM +0100, Vlastimil Babka wrote:
> 
> This has been in mmotm since november:
> http://ozlabs.org/~akpm/mmotm/broken-out/mm-fix-kernel-crash-in-khugepaged-thread.patch
> 
> Although your patch does use -1UL instead of -1 (AFAICS the only difference, but
> it's too late here), which Steven Rostedt suggested, so it's probably better.

OK, great then, drop mine.