On Wed, Nov 13, 2019 at 05:22:33PM +0530, Naresh Kamboju wrote:
Hi Christian,
Hi Naresh,
[+Cc Joel since this is _not related_ to the fdinfo patches but rather the polling tests]
Thanks for following up here. See for more comments below.
On Tue, 15 Oct 2019 at 15:37, Christian Brauner christian.brauner@ubuntu.com wrote:
On Mon, Oct 14, 2019 at 06:20:33PM +0200, Christian Kellner wrote:
From: Christian Kellner christian@kellner.me
Add a test that checks that if pid namespaces are configured the fdinfo file of a pidfd contains an NSpid: entry containing the process id in the current and additionally all nested namespaces. In the case that a pidfd is from a pid namespace not in the same namespace hierarchy as the process accessing the fdinfo file, ensure the 'NSpid' shows 0 for that pidfd, analogous to the 'Pid' entry.
Signed-off-by: Christian Kellner christian@kellner.me
That looks reasonable to me.
on arm64 Juno-r2, Hikey (hi6220) and dragonboard 410c and arm32 Beagleboard x15 test pidfd_test failed. and on x86_64 and i386 test fails intermittently with TIMEOUT error. Test code is being used from linux next tree.
Juno-r2 test output:
# selftests pidfd pidfd_test pidfd: pidfd_test_ # # TAP version 13 version: 13_ # # 1..4 : _ # # # Parent pid 10586 Parent: pid_10586 # # # Parent Waiting for Child (10587) to complete. Parent: Waiting_for # # # Time waited for child 0 Time: waited_for # # Bail out! pidfd_poll check for premature notification on child thread exec test Failed out!: pidfd_poll_check # # # Planned tests != run tests (4 != 0) Planned: tests_!= # # # Pass 0 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0 Pass: 0_Fail # [FAIL] 1 selftests pidfd pidfd_test # exit=1 selftests: pidfd_pidfd_test [FAIL]
arm32 x15 output log,
# selftests pidfd pidfd_test pidfd: pidfd_test_ # [FAIL] 1 selftests pidfd pidfd_test # TIMEOUT selftests: pidfd_pidfd_test [FAIL]
x86_64 output log,
# selftests pidfd pidfd_test pidfd: pidfd_test_ # [FAIL] 1 selftests pidfd pidfd_test # TIMEOUT selftests: pidfd_pidfd_test [FAIL]
Test results comparison, https://qa-reports.linaro.org/lkft/linux-mainline-oe/tests/kselftest/pidfd_p... https://qa-reports.linaro.org/lkft/linux-next-oe/tests/kselftest/pidfd_pidfd...
link, https://lkft.validation.linaro.org/scheduler/job/993549#L17835
Note, that this failure is _not_ related to the fdinfo and NSpid patches here. It's rather related to the polling testing code that Joel added. Iirc, then it is timing sensitive. I'll try to make some room this week to look into this.
Christian