Hi, Rafael > From: rjwysocki@xxxxxxxxx [mailto:rjwysocki@xxxxxxxxx] On Behalf Of Rafael J. Wysocki > Subject: Re: 4.9-rc1: [TMP_] ACPI namespace lookup failure, AE_ALREADY_EXISTS > > On Thu, Oct 20, 2016 at 8:44 PM, Zheng, Lv <lv.zheng@xxxxxxxxx> wrote: > > Hi, > > > >> From: Deak, Imre > >> Subject: 4.9-rc1: [TMP_] ACPI namespace lookup failure, AE_ALREADY_EXISTS > >> > >> Hi, > >> > >> after upgrading to 4.9-rc1 I get the following errors occasionally > >> during boot and suspend-to-ram on an APL system: > >> > >> [ 59.513434] ACPI Error: [TMP_] Namespace lookup failure, AE_ALREADY_EXISTS (20160831/dswload2- > 330) > >> [ 59.513446] ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20160831/psobject-227) > >> [ 59.513469] ACPI Error: Method parse/execution failed [\_SB.PCI0.SCPG] (Node ffff8802770b7bb8), > >> AE_ALREADY_EXISTS (20160831/psparse-543) > >> [ 59.515415] ACPI Error: Method parse/execution failed [\_SB.PCI0.SDHA._PS3] (Node > ffff8802770b7dc0), > >> AE_ALREADY_EXISTS (20160831/psparse-543) > >> [ 59.517118] ACPI: Marking method _PS3 as Serialized because of AE_ALREADY_EXISTS error > >> > >> Other than these error messages, booting and suspend/resume seems to work ok. > >> Bisecting points to > >> commit 74f51b80a0c4ff84fbeb7f12ea43ce66934d29aa > >> Author: Lv Zheng <lv.zheng@xxxxxxxxx> > >> Date: Wed Sep 7 14:07:10 2016 +0800 > >> > >> ACPICA: Namespace: Fix dynamic table loading issues > >> > >> Reverting this on top of 4.9-rc1 gets rid of the error messages. > > > > The commit in question only modified code to make locks unlocked/locked. > > Which should be transparent to the functional stuffs. > > It might change the relative timing of thigs (which might result in > ordering changes). Yes, I'll check that with the acpidump. To see if this is caused by wrong reduced lock affection scope. > > > I'm not sure how it can lead to such error in the single-threading boot environment. > > Why do you think it's single-threaded? At least suspend/resume isn't > in general. I just say that because it is also reported as "occasionally during boot". Thanks and best regards Lv ��.n��������+%������w��{.n�����{�����ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
