Date: Wed, 5 Feb 2020 14:45:50 +0100 From: Andreas Nilsson <andrnils@gmail.com> To: cem@freebsd.org Cc: "Andrey V. Elsukov" <bu7cher@yandex.ru>, Current FreeBSD <freebsd-current@freebsd.org> Subject: Re: hwpstate_intel hangs kernel Message-ID: <CAPS9%2BSs__9HTg6RAu1JrLa5YOB8hK1%2BZFD05mNP%2BSnih8qiO8w@mail.gmail.com> In-Reply-To: <CAPS9%2BSuniZZ6mvQzFmMvY=5i-G%2BOjCF5A_yMnBYmrZWo77dOug@mail.gmail.com> References: <CAPS9%2BSukk_MFzUFBjs2K8bjsayL%2BTedhtY9aC8VF-UCHKEpp-w@mail.gmail.com> <a2a81eb9-c7d8-869a-5024-6bf0000c22a1@yandex.ru> <ccebd015-ae44-b4b9-aca6-080528bc0d64@yandex.ru> <CAG6CVpXq1xL=u=yYWd_srCDFb2s1asN%2Bm9%2BGA43WF3%2BQmpq5aw@mail.gmail.com> <CAPS9%2BSuniZZ6mvQzFmMvY=5i-G%2BOjCF5A_yMnBYmrZWo77dOug@mail.gmail.com>
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Hello, I upgraded to a newer version, git 87d669d3863-c266265, and I do not experience the random hang anymore. The machine still hangs on boot on "hwpstate_intel0: <Intel Speed Shift> on cpu0" unless I set 'hint.hwpstate_intel.0.disabled=3D"1"' in loader.conf. On a side note I cannot set or unset that hint from loader prompt; ok> set hint.hwpstate_intel.0.disabled=3D"0" ok> show .... hint.hwpstate=3D ... Best regards Andreas On Sat, Feb 1, 2020 at 11:26 PM Andreas Nilsson <andrnils@gmail.com> wrote: > Hello Conrad, > > thank you Andrey for bisecting! I'll try with that hint and see how it > works for me. > > Best regards > Andreas > > On Sat, Feb 1, 2020, 18:18 Conrad Meyer <cem@freebsd.org> wrote: > >> Hi Andrey, >> >> Please try 'hint.hwpstate_intel.0.disabled=3D"1"' as a workaround for no= w. >> >> I think I have identified at least one problematic piece of code, >> although I don't know if it's the root cause. I will go ahead and fix >> that, which may not fix the hang, and also add some debug printfs that >> can be enabled to help identify the real issue. >> >> Thanks for the report and bisect. >> >> Best, >> Conrad >> >> On Sat, Feb 1, 2020 at 6:06 AM Andrey V. Elsukov <bu7cher@yandex.ru> >> wrote: >> > >> > 31.01.2020 18:11, Andrey V. Elsukov =D0=BF=D0=B8=D1=88=D0=B5=D1=82: >> > > On 24.01.2020 19:52, Andreas Nilsson wrote: >> > >> It hangs during kernel boot and the last message printed on console >> is: >> > >> hwpstate_intel0: <Intel Speed Shift> on cpu0 >> > > >> > > Hi, >> > > >> > > Did you find the cause of this hang? >> > > I also tried to update today from r350816 to r357330. But my Lenovo = X1 >> > > Carbon 4th hangs on the same message. >> > > >> > >> > Hi, >> > >> > I have bisected the bad commit, it is r357002. >> > >> > -- >> > WBR, Andrey V. Elsukov >> > >> >
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