linux-kernel - Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c

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Date:	Thu, 06 Nov 2014 21:23:25 +0200
From:	"P. Christeas" <xrg@...ux.gr>
To:	Vlastimil Babka <vbabka@...e.cz>
Cc:	linux-mm@...ck.org, Joonsoo Kim <iamjoonsoo.kim@....com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c

On Wednesday 05 November 2014, Vlastimil Babka wrote:
> Can you please try the following patch?
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -1325,13 +1325,6 @@ unsigned long try_to_compact_pages(struct zonelist
> -			compaction_defer_reset(zone, order, false);

NACK :(

I just got again into a state that some task was spinning out of control, and 
blocking the rest of the desktop.

You will see me trying a few things, apparently the first OOM managed to 
unblock something, but a few seconds later the system "stepped" on some other 
blocking task.

See attached log, it may only give you some hint; the problem could well be in 
some other part of the kernel.

In the meanwhile, I'm pulling linus/master ...

View attachment "kcrash.log" of type "text/x-log" (39920 bytes)