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Subject: [Bug 220277] 11.1-BETA3 hangs on Dell Vostro V130 during boot
Date: Sun, 02 Jul 2017 20:54:05 +0000
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X-Bugzilla-Version: 11.0-STABLE
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D220277

--- Comment #12 from Mark Johnston <markj@FreeBSD.org> ---
I managed to capture the hang in ddb using boot -d. thread0 is mtx_sleep()i=
ng
in AcpiOsAcquireMutex() with a stack that goes through acpi_button_probe().=
 A
taskqueue thread is pause()d with the following stack:

pause_sbt()
AcpiExSystemDoSleep()
AcpiDsExecEndOp
AcpiPsParseLoop()
AcpiPsParseAml()
AcpiPsExecuteMethod()
AcpiNsEvaluate()
AcpiEvaluateObject()
acpi_cmbat_get_bst()
acpi_cmbat_init_battery()
<taskqueue stuff>

I presume that this thread is holding the ACPI mutex that thread0 is waiting
for. So it seems that r310336 wasn't sufficient.

--=20
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