Created attachment 277365 [details]
Linux 4.18-rc5+ messages
With Linux 4.18-rc5+ I get the ACPI Error below on a MSI B350M MORTAR.
$ git log --oneline -1
30b06abfb92b (HEAD -> master, origin/master, origin/HEAD) Merge tag 'pinctrl-v4.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
$ git describe --dirty
$ sudo dmesg
[ 0.060633] ACPI: Added _OSI(Linux-Dell-Video)
[ 0.068004] ACPI BIOS Error (bug): Failure creating [\_SB.SMIC], AE_ALREADY_EXISTS (20180531/dswload2-316)
[ 0.068004] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20180531/psobject-221)
[ 0.068004] ACPI Error: Ignore error and continue table load (20180531/psobject-604)
[ 0.068004] ACPI BIOS Error (bug): Failure creating [\_SB.SMIB], AE_ALREADY_EXISTS (20180531/dsfield-594)
[ 0.068004] ACPI: 8 ACPI AML tables successfully acquired and loaded
[ 0.068655] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
Created attachment 277367 [details]
Output of `acpidump`
is this a regression? if yes, can you please attach the dmesg for old good kernel?
(In reply to Zhang Rui from comment #2)
> is this a regression? if yes, can you please attach the dmesg for old good
I do not think this is a regression.
This is an error within the firmware. SMIC and SMIB are both declared in the DSDT and an SSDT in your acpi tables. This is probably not a serious issue. If you would like a fix, I suggest contacting the firmware vendor. Closing, this is a bug in the firmware, not in the Linux kernel.