linux-kernel - Re: [PATCH] ARC: Improve handling of fatal signals in do_page

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Message-ID: <1520061c-5708-c19b-33e0-08a2ea2fc767@synopsys.com>
Date:   Thu, 2 Aug 2018 14:54:39 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
Subject: Re: [PATCH] ARC: Improve handling of fatal signals in do_page_fault()

On 08/02/2018 12:08 AM, Alexey Brodkin wrote:
>> The fault handling is spaghetti mess of checks and more checks and has not really
>> been touched since upstreaming. I need to clean it up and essentially rewrite it
>> for v4.19
> So would you like me to send a re-spin with less changes as discussed above so
> we have something better for now and for back-porting to stable branches.

No that's fine, I'll fix it up here - minimally for the stable backports and do
the rewrite later.

BTW I tried to reproduce the Old OOM hangs from LTP (STARS 9001304674, 9001281305)
to prove that this fix solves those too, but I can't seem to reproduce the same
deadlock without this fix on 4.17 kernel.

-Vineet