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SubjectRe: [Ksummit-discuss] bug-introducing patches
+Fengguang

On Mon, 14 May 2018 10:40:10 +0200
Geert Uytterhoeven <geert@linux-m68k.org> wrote:

> Hi Boris,
>
> On Mon, May 14, 2018 at 10:34 AM, Boris Brezillon
> <boris.brezillon@bootlin.com> wrote:
> > On Mon, 14 May 2018 10:29:04 +0200
> > Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> >> On Mon, May 14, 2018 at 10:12 AM, Boris Brezillon
> >> <boris.brezillon@bootlin.com> wrote:
> >> > On Mon, 14 May 2018 10:00:30 +0200
> >> > Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> >> >> On Tue, May 1, 2018 at 10:00 PM, Sasha Levin
> >> >> <Alexander.Levin@microsoft.com> wrote:
> >> >> > On Tue, May 01, 2018 at 03:44:50PM -0400, Theodore Y. Ts'o wrote:
> >> >> >>On Tue, May 01, 2018 at 04:38:21PM +0000, Sasha Levin wrote:
> >> >> > What's worse is that that commit is tagged for stable, which means
> >> >> > that (given Greg's schedule) it may find it's way to -stable users
> >> >> > even before some -next users/bots had a chance to test it out.
> >> >>
> >> >> I just noticed a case where a commit was picked up for stable, while a
> >> >> bot had flagged it as a build regression 18 hours earlier (with a CC to
> >> >> lkml).
> >> >
> >> > Also, this patch has been on a tree that I know is tested by Fengguang's
> >> > robots for more than a week (and in linux-next for 2 days, which, I
> >> > agree, is probably not enough), and still, I only received the bug
> >> > report when the patch reached mainline. Are there tests that are only
> >> > run on Linus' tree?
> >>
> >> Have your received a success report from Fengguang's bot, listing all
> >> configs tested (the broken one should be included; it is included in the
> >> configs tested on my branches)?
> >
> > Yes I did (see below).
> >
> > -->8--
> > From: kbuild test robot <lkp@intel.com>
> > To: Boris Brezillon <boris.brezillon@bootlin.com>
> > Subject: [bbrezillon-0day:mtd/fixes] BUILD SUCCESS fc3a9e15b492eef707afd56b7478001fdecfe53f
> > Date: Mon, 07 May 2018 20:05:52 +0800
> > User-Agent: Heirloom mailx 12.5 6/20/10
> >
> > tree/branch: https://github.com/bbrezillon/linux-0day mtd/fixes
> > branch HEAD: fc3a9e15b492eef707afd56b7478001fdecfe53f mtd: rawnand: Make sure we wait tWB before polling the STATUS reg
> >
> > elapsed time: 49m
> >
> > configs tested: 142
>
> But the failed config (m68k/allmodconfig) is not listed?

Yes, that's my point. It seems that some configs are only rarely
(never?) tested on my linux-0day tree (probably because they take longer
to build), and I should only take kbuild robot results as an indication
not a guarantee.

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