在我们的 rhel 7.2 服务器上，我们可以看到所有的行dmesg都是这样的
uname -r
3.10.0-327.el7.x86_64
[26202771.781769] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26202771.781782] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26202771.781800] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26202831.650423] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26202831.650431] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26202831.650441] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26202891.499068] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26202891.499075] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26202891.499085] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26202951.362930] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26202951.362944] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26202951.362967] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26203011.251183] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26203011.251197] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26203011.251216] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26203071.081705] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26203071.081718] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26203071.081735] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26203130.936870] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26203130.936886] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26203130.936912] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26203190.801805] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26203190.801811] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26203190.801820] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
[26203250.658782] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517/exfield-389)
[26203250.658795] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88ccf723b280), AE_AML_BUFFER_LIMIT (20130517/psparse-536)
[26203250.658813] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517/power_meter-339)
尽管上面几行并没有表明主要问题！
但真正的问题是我们没有看到其他应该理解的重要内核消息
如何排除有关 - 的错误消息Error: SMBus/IPMI/GenericSerialBus write requires