linux-kernel - Re: [PATCH 4/4 v5 RESEND] selftests: add devpts selftests

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Date:   Tue, 10 Apr 2018 10:42:09 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org,
        ebiederm@...ssion.com, torvalds@...ux-foundation.org,
        gregkh@...uxfoundation.org, containers@...ts.linux-foundation.org
Subject: Re: [PATCH 4/4 v5 RESEND] selftests: add devpts selftests

On Tue, Apr 10, 2018 at 04:20:44PM +1000, Michael Ellerman wrote:
> Hi Christian,
> 
> Christian Brauner <christian.brauner@...ntu.com> writes:
> > diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
> > index 7442dfb73b7f..dbda89c9d9b9 100644
> > --- a/tools/testing/selftests/Makefile
> > +++ b/tools/testing/selftests/Makefile
> > @@ -7,6 +7,7 @@ TARGETS += cpufreq
> >  TARGETS += cpu-hotplug
> >  TARGETS += efivarfs
> >  TARGETS += exec
> > +TARGETS += filesystems
>    ^ This, and ...
> 
> > diff --git a/tools/testing/selftests/filesystems/Makefile b/tools/testing/selftests/filesystems/Makefile
> > index 13a73bf725b5..4e6d09fb166f 100644
> > --- a/tools/testing/selftests/filesystems/Makefile
> > +++ b/tools/testing/selftests/filesystems/Makefile
> > @@ -1,5 +1,5 @@
> >  # SPDX-License-Identifier: GPL-2.0
> > -TEST_PROGS := dnotify_test
> > +TEST_PROGS := dnotify_test devpts_pts
>                  ^
>                  this ...
> 
> Have the unfortunate effect of running dnotify_test as part of the
> default selftest run.
> 
> dnotify_test boils down to:
> 
> 	while (1) {
> 		pause();
> 		printf("Got event on fd=%d\n", event_fd);
> 	}
> 
> 
> ie. an infinite loop :)

Hi Michael,

Ugh, didn't notice this before. Weird test.

> 
> I'll send a patch to fix it.

Excellent, you can likely route it through Greg's tty tree.

Thanks!
Christian