Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [BUG] acpica: ltp_acpi test case causes kernel crash at acpi_ns_walk_namespace | Date | Wed, 13 Dec 2017 00:45:50 +0100 |
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On Tuesday, December 12, 2017 4:59:19 PM CET Vadim Lomovtsev wrote: > Hi guys, > > While running LTP tests I've faced kernel crash caused by ltp_acpi test case. > I have ACPI support enabled in kernel but kernel is boot with FDT having ACPI > disabled. The ltp_acpi test case application is built along with ltp_acpi_cmds > module to run ACPI tests. > > So my question is - should we update acpica implementation at kernel side by > adding 'acpi_disabled' variable checking to the 'acpi_get_devices' function (see > patch next to this email, maybe not a good approach) or this should be fixed at LTP > side so the ltp_acpi_cmds should be updated in order to check if acpi is enabled > before running tests ?
There should be a check preventing acpi_get_devices() from being called in the acpi_disabled case.
acpi_disabled is Linux-specific and the ACPICA code isn't, so the code calling ACPICA functions should check acpi_disabled when necessary.
Thanks, Rafael
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