From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#26981: Test failure in guix (commit
	872a6fd98868d345443f04efdfd974d148c57f9d)
Date: Fri, 19 May 2017 10:16:35 +0200
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In-Reply-To: <4321befc-be71-82c5-20a2-69abdfefdc04@fastmail.net> (Konrad
	Hinsen's message of "Thu, 18 May 2017 08:38:15 +0200")
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To: Konrad Hinsen <konrad.hinsen@fastmail.net>
Cc: 26981@debbugs.gnu.org

Hi Konrad,

Konrad Hinsen <konrad.hinsen@fastmail.net> skribis:

> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
>    GNU Guix 0.12.0.3916-872a6: ./test-suite.log
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
>
> # TOTAL: 706
> # PASS:  701
> # SKIP:  4
> # XFAIL: 0
> # FAIL:  1
> # XPASS: 0
> # ERROR: 0

[...]

> test-name: pivot-root
> location: /home/hinsen/Development/guix/tests/syscalls.scm:154
> source:
> + (test-equal
> +   "pivot-root"
> +   #t
> +   (match (pipe)
> +          ((in . out)
> +           (match (clone (logior CLONE_NEWUSER CLONE_NEWNS SIGCHLD))
> +                  (0
> +                   (dynamic-wind
> +                     (const #t)
> +                     (lambda ()
> +                       (close in)
> +                       (call-with-temporary-directory
> +                         (lambda (root)
> +                           (let ((put-old (string-append root "/real-roo=
t")))
> +                             (mount "none" root "tmpfs")
> +                             (mkdir put-old)
> +                             (call-with-output-file
> +                               (string-append root "/test")
> +                               (lambda (port) (display "testing\n" port)=
))
> +                             (pivot-root root put-old)
> +                             (write (file-exists? "/test") out)
> +                             (close out)))))
> +                     (lambda () (primitive-exit 0))))
> +                  (pid (close out)
> +                       (let ((result (read in)))
> +                         (close in)
> +                         (and (zero? (match (waitpid pid)
> +                                            ((_ . status)
> +                                             (status:exit-val status))))
> +                              (eq? #t result))))))))
> expected-value: #t
> actual-value: #f
> result: FAIL

What does =E2=80=9Cuname -r=E2=80=9D report on your system?

This test is known to exercise a kernel bug on recent versions:

  ;; XXX: Skip this test when running Linux > 4.7.5 to work around
  ;; <https://bugzilla.kernel.org/show_bug.cgi?id=3D183461>.
  (when (or (not perform-container-tests?)
            (version>? (utsname:release (uname)) "4.7.5"))
    (test-skip 1))

(This functionality is used only by the container facilities of =E2=80=98gu=
ix
environment=E2=80=99 and =E2=80=98guix system=E2=80=99, so you shouldn=E2=
=80=99t take it as a blocker.)

Thanks for reporting the issue,
Ludo=E2=80=99.