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gmane.os.netbsd.bugs |
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<[email protected]> |
>Number: 60631
>Category: port-amd64
>Synopsis: Intel N150 cpu hang leading to kernel panic in heartbeat
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: port-amd64-maintainer
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sat Aug 22 08:50:00 +0000 2026
>Originator: Phil Ashby
>Release: NetBSD 11.0 (GENERIC)
>Organization:
>Environment:
NetBSD timmy-iv 11.0 NetBSD 11.0 (GENERIC) #0: Thu Jul 30 15:23:12 UTC 2026 [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
On a Beelink ME Pro NAS, which uses the Intel N150 SoC and associated Intel PCH chipset, I find the following with current NetBSD 11.0 (GENERIC):
1/ USB image installer works OK
2/ Single user boot (boot -s) works OK
3/ Multi user boot (boot) hangs during /etc/rc execution
3.1/ Further execution appears to stop (no visible progress)
3.2/ heartbeat(9) triggers a kernel panic after 15s (1501 beats)
>How-To-Repeat:
The problem is completely repeatable on every default multi user boot
>Fix:
After experimenting with boot options (thanks to Stephen Borill) I have discovered that avoiding ACPI (boot -2) provides a reliable solution. Sometimes a uniprocessor boot (boot -1) works, but not always.
Further information:
DDB shows that the stuck cpu is asleep in x86_stihlt() at the point when the heartbeat panic fires.
I am happy to collect crash dumps for analysis.