linux-kernel - Re: bisected bd4c82c22c367e is the first bad commit (was [Bug 198617] New: zswap causing random applications to crash)

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Date:   Mon, 5 Feb 2018 21:43:23 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     "Huang, Ying" <ying.huang@...el.com>,
        huang ying <huang.ying.caritas@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...nel.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Minchan Kim <minchan@...nel.org>,
        Seth Jennings <sjenning@...hat.com>,
        Dan Streetman <ddstreet@...e.org>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: bisected bd4c82c22c367e is the first bad commit (was [Bug
 198617] New: zswap causing random applications to crash)

On (02/05/18 21:39), Sergey Senozhatsky wrote:
> > I have successfully reproduced the issue and find the problem.  The
> > following patch fix the issue for me, can you try it?
> 
> That was quick ;)
> 
> > ---------------------------------8<-------------------------------
> > From 4c52d531680f91572ebc6f4525a018e32a934ef0 Mon Sep 17 00:00:00 2001
> > From: Huang Ying <huang.ying.caritas@...il.com>
> > Date: Mon, 5 Feb 2018 19:27:43 +0800
> > Subject: [PATCH] fontswap thp fix
> 
> Seems to be fixing the problem on my x86 box. Executed several tests, no
> crashes were observed. Can run more tests tomorrow.
> 
> 
> ============================================================================
> 
> Probably unrelated, but may be it is related: my X server used to hang
> sometimes (rarely) which I suspect was/is caused by nouveau driver. It,
> surprisingly, didn't hang this time around. Nouveau spitted a number
> of backtraces, but X server managed to survive it. Any chance that
> nouveau-X server thing was caused by THP?

No, wait. How could it be... I don't even use frontswap usually.
Sorry for the silly question.

	-ss