Bug 16358

Summary: AB-INT PTEST: lttng-tools: Couldn't login into serial console as root using blank password
Product: [QA/Testing] Package Testing (ptest) Reporter: João Marcos Costa <joaomarcos.costa>
Component: ptestAssignee: Unassigned <unassigned>
Status: NEW --- QA Contact:
Severity: normal    
Priority: Medium CC: mathieu.dubois-briand, pratik.farkase, randy.macleod
Version: unspecified   
Target Milestone: 6.1   
Hardware: x86   
OS: Multiple   
Whiteboard: AB-INT
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: Don't know

Description João Marcos Costa 2026-07-15 14:18:43 UTC 
Hello,

This seems to be a timeout unrelated to a specific test:

---
WARNING: core-image-ptest-lttng-tools-1.0-r0 do_testimage: Couldn't login into serial console as root using blank password
WARNING: core-image-ptest-lttng-tools-1.0-r0 do_testimage: The output:


qemux86-64 login: <<< run_serial(): command timed out after 120 seconds without output >>>
---

https://autobuilder.yoctoproject.org/valkyrie/#/builders/110/builds/689/steps/13/logs/stdio

qemux86-64-musl-ptest debian11-vk-1

I'm opening this one just in case, but there are no actual timeouts or failures in lttng-tools itself:

---
============================================================================
Testsuite summary for lttng-tools 2.15.1
============================================================================
# TOTAL: 44
# PASS:  0
# SKIP:  44
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================
============================================================================
Testsuite summary for lttng-tools 2.15.1
============================================================================
# TOTAL: 0
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================
===================================================
   lttng-tools 2.15.1: tests/unit/test-suite.log
===================================================

# TOTAL: 1164
# PASS:  1164
# SKIP:  0
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0

System information (uname -a): Linux 6.18.35-yocto-standard #1 SMP PREEMPT_DYNAMIC Wed Jun 10 16:00:30 UTC 2026 x86_64
Distribution information (/etc/issue):
Poky (Yocto Project Reference Distro) 6.0.99+snapshot-db05ed0da499b2a6c60b16c35ab7b6ab693c9d49 \n \l

Type 'root' to login with superuser privileges (no password will be asked).


.. contents:: :depth: 2

DURATION: 3
---

Full logs at: https://valkyrie.yocto.io/pub/non-release/20260710-40/testresults/qemux86-64-musl-ptest/lttng-tools.log
Comment 1 Randy MacLeod 2026-07-16 14:44:55 UTC 
Let's see how often it repeats. 
Gather logs if it happens again.
Comment 2 Mathieu Dubois-Briand 2026-07-20 12:05:12 UTC 
qemux86-64-musl-ptest ubuntu2204-vk-3 mathieu/master-next&mathieu/master-next-tests completed at 2026-07-17 12:58:54+00:00
https://valkyrie.yocto.io/pub/non-release/20260717-85/testresults/qemux86-64-musl-ptest/
https://autobuilder.yoctoproject.org/valkyrie/#/builders/110/builds/724/steps/13/logs/stdio
Comment 4 João Marcos Costa 2026-09-10 08:46:08 UTC 
It's affecting util-linux this time, but very likely the same issue:

https://autobuilder.yoctoproject.org/valkyrie/#/builders/110/builds/1124/steps/15/logs/stdio

qemux86-64-musl-ptest fedora43-vk-2

"""
WARNING: core-image-ptest-util-linux-1.0-r0 do_testimage: Couldn't login into serial console as root using blank password
WARNING: core-image-ptest-util-linux-1.0-r0 do_testimage: The output:


qemux86-64 login: <<< run_serial(): command timed out after 120 seconds without output
"""

Full logs at https://valkyrie.yocto.io/pub/non-release/20260905-68/testresults/qemux86-64-musl-ptest/core-image-ptest-util-linux/
Comment 5 João Marcos Costa 2026-09-15 11:50:23 UTC 
util-linux as well:

https://autobuilder.yoctoproject.org/valkyrie/#/builders/110/builds/1167/steps/15/logs/stdio

qemux86-64-musl-ptest debian12-vk-8