Bug 14906

Summary:	Regression caused by systemd 251.4 upgrade when compiled with clang on arm64/arm64
Product:	[Build System, Metadata & Runtime] OE-Core	Reporter:	Khem Raj <raj.khem>
Component:	devtools / tool chain	Assignee:	Khem Raj <raj.khem>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	Medium	CC:	jon.mason, meta.mr.watcher, meta.watcher, randy.macleod, ross.burton
Version:	unspecified
Target Milestone:	4.1
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	Don't know

Description Khem Raj 2022-08-30 07:41:16 UTC

I bisected a problem on qemuarm64 on arm64 build host when using clang as compiler. It seems to be related systemd bump to 251.4

commit 96e409c10f4a44433f2bbe55f9fb6981ea413a5e (HEAD)
Author: Khem Raj <raj.khem@gmail.com>
Date:   Mon Aug 15 20:35:51 2022 -0700

    systemd: Upgrade to 251.4 and fix build with binutils 2.39

    The mount.h conflict patch is now upstream so drop it.
    Additionally this version fixes build with binutils-2.39 [1]

    [1] https://github.com/systemd/systemd-stable/commit/8a6f966be404897b5333c218701965ac3b5a0806

    (From OE-Core rev: d43ec090ceb2bf0016a065103a4c34d0c43cb906)

    Signed-off-by: Khem Raj <raj.khem@gmail.com>
    Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>


A workaround is to use 

TOOLCHAIN = "gcc" for now. Its a regression since 251.3 worked alright

With this version we see

RESULTS - systemd.SystemdBasicTests.test_systemd_failed: FAILED (122.64s)
RESULTS - weston.WestonTest.test_weston_can_initialize_new_wayland_compositor: FAILED (0.18s)
RESULTS - weston.WestonTest.test_weston_running: FAILED (0.37s)
RESULTS - weston.WestonTest.test_weston_supports_xwayland: FAILED (0.19s)



....
AssertionError: False is not true : Timed out waiting for systemd to settle:
  UNIT           LOAD   ACTIVE     SUB       DESCRIPTION
  dev-vda.device loaded activating tentative /dev/vda
....

It seems its not able to settle the virtual disk device which leads to these issues.

Comment 1 Randy MacLeod 2022-11-03 15:13:27 UTC

We think this is resolved since it hasn't been happening.

Comment 2 Khem Raj 2022-11-03 16:44:38 UTC

(In reply to comment #1)
> We think this is resolved since it hasn't been happening.

In meta-clang we have forced it to use gcc see

https://github.com/kraj/meta-clang/blob/master/recipes-core/systemd/systemd_%25.bbappend#L3

have you tried by unbolting this workaround ?

Comment 3 Khem Raj 2023-01-03 07:14:07 UTC

Finally, I can see that systemd upgrade to 252.4 has fixed this problem/regression