I am seeing ACPI error messages when I boot my system. Are they a cause for concern?

Issue

I am seeing ACPI error messages when I boot my system. Are they a cause for concern? Specifically, I am seeing these errors:

Oct 23 19:44:52 dhcp33 kernel: ACPI Warning for \_SB_._OSC: Return type mismatch - found Integer, expected Buffer (20090903/nspredef-1006)
Oct 23 19:44:52 dhcp33 kernel: ACPI Error (psargs-0359): [ECEN] Namespace lookup failure, AE_NOT_FOUND
Oct 23 19:44:52 dhcp33 kernel: ACPI Error (psparse-0537): Method parse/execution failed [\] (Node ffffffff81f08530), AE_NOT_FOUND
Oct 23 19:44:52 dhcp33 kernel: ACPI Error (dswload-0659): [PCI0] Namespace lookup failure, AE_NOT_FOUND
Oct 23 19:44:52 dhcp33 kernel: ACPI Exception: AE_NOT_FOUND, During name lookup/catalog (20090903/psloop-230)
Oct 23 19:44:52 dhcp33 kernel: ACPI Error (psparse-0537): Method parse/execution failed [\] (Node ffffffff81f08530), AE_NOT_FOUND
Oct 23 19:44:52 dhcp33 kernel: ACPI: Executed 3 blocks of module-level executable AML code
Oct 23 19:44:52 dhcp33 kernel: ACPI: Interpreter enabled
Oct 23 19:44:52 dhcp33 kernel: ACPI: (supports S0 S5)
Oct 23 19:44:52 dhcp33 kernel: ACPI: BIOS offers _GTS
Oct 23 19:44:52 dhcp33 kernel: ACPI: If "acpi.gts=1" improves suspend, please notify linux-acpi@vger.kernel.org
Oct 23 19:44:52 dhcp33 kernel: ACPI: Using IOAPIC for interrupt routing
Oct 23 19:44:52 dhcp33 kernel: ACPI Warning: Incorrect checksum in table [OEMB] - 16, should be 11 (20090903/tbutils-314)

Environment

• Red Hat Enterprise Linux 6.1
• Facebook OCP Webserver2 V1 system

Resolution

These messages indicate that there are BIOS errors related to power management control and PCI root bridge enumeration data due to an improper ACPI table. While these should not cause problems with regular system operation, they could cause issues with power management functions. Please contact your system vendor and ask for an updated BIOS.