linux-kernel - Re: [PATCH 0/2] mm: Two small fixes for recent syzbot reports

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Date:   Fri, 10 Apr 2020 09:29:51 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Xu <peterx@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH 0/2] mm: Two small fixes for recent syzbot reports

Hi Linus,

On Thu, 9 Apr 2020 09:32:32 -0700 Linus Torvalds <torvalds@...ux-foundation.org> wrote:
>
> On Thu, Apr 9, 2020 at 5:55 AM Dmitry Vyukov <dvyukov@...gle.com> wrote:
> >
> > linux-next is boot-broken for more than a month and bugs are piling
> > onto bugs, I've seen at least 3 different ones.
> > syzbot can't get any working linux-next build for testing for a very
> > long time now.  
> 
> Ouch.
> 
> Ok, that's not good. It means that linux-next has basically only done
> build-testing this whole cycle.

Well, there are other CI's beyond syzbot .. Does syzbot only build/test
a single kernel arch/config?

> Stephen, Dmitry - is there some way linux-next could possibly kick out
> trees more aggressively if syzbot can't even boot?

Of course that could be done if I knew that there were problems.  From
memory and my mail archives, I was only cc'd on 3 problems by sysbot
since last November and they were all responded to by the appropriate
maintainers/developers.

Currently, when I am cc'd on reports, if they are also sent to who
seem like the appropriate people, I just file the report assuming it
will be dealt with.

> Kicking trees out of linux-next and making noise if they cause syzbot
> failures might also make some maintainers react more..

That may be true, but in some cases I have carried fixups/reverts/older
versions of trees for quite some time before things get fixed.  But at
least if that happens, I do tend to remind people.

-- 
Cheers,
Stephen Rothwell

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