Date: Tue, 1 Dec 2015 00:18:25 +0100 From: Svatopluk Kraus <onwahe@gmail.com> To: Karl Denninger <karl@denninger.net> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Raspberry Pi2 kernel warnings Message-ID: <CAFHCsPU-d8EJnfj%2B7tsaDSkEccyWgnD3=hLtpvLQ_7cg-4=HVw@mail.gmail.com> In-Reply-To: <565CD545.1090801@denninger.net> References: <56575896.70105@denninger.net> <CAFHCsPW4p9f4aGRffhAgFVgcYTixoJQVR707hhXZmB9B7U9v-A@mail.gmail.com> <5657E4C6.9020609@denninger.net> <56589C6B.8000100@denninger.net> <CAFHCsPUYYs3Kbfi4-tpAz-iah49s-nPyAX-akc71_4s-YMgQbQ@mail.gmail.com> <5658DB87.5010308@denninger.net> <CAFHCsPX8w%2BrJihkXX4SHaV52=08F8BT7VWordx9p2kKx8CYsLw@mail.gmail.com> <565A03CA.1010608@denninger.net> <565CD545.1090801@denninger.net>
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On Tue, Dec 1, 2015 at 12:01 AM, Karl Denninger <karl@denninger.net> wrote: > And.... now it's dead again. > > This may not be related to the patch.... however, the kernel does appear > to use the bcm2835.... so while the patch may not be the cause something > is going on here that's not kosher.... > > The espeak process is killable but if I had to guess it's waiting for > what it thinks is a busy I/O to become free. I have the same problem with omxplayer. No idea what could be behind it. There is about 8 omxplayer's thread, one is in select, all others are waiting on some user locks. > > Any ideas on running this down? > > On 11/28/2015 13:43, Karl Denninger wrote: >> That appears to have fixed it; espeak is again working. >> >> On 11/27/2015 17:20, Svatopluk Kraus wrote: >>> Well, I cannot imagine now how my patch could be the cause of that >>> except that sdhci is using dma channel #4 now, but it was #2, which is >>> said to be used by GPU. And channels used by GPU are not initialized >>> now. Try to apply the attached fix just to be sure. >>> >>> FYI, my video playback freezed up after more than 12 hours of playing >>> today, so there could be some problem in communication with GPU, not >>> my patch related. >>> >>> >>> >>> On Fri, Nov 27, 2015 at 11:39 PM, Karl Denninger <karl@denninger.net> wrote: >>>> Hmmm... or maybe not. >>>> >>>> "espeak" (speech synthesizer) hangs in a "S" state with this change in. >>>> Not sure if it's the cause but it was working before. >>>> >>>> >>>> On 11/27/2015 13:56, Svatopluk Kraus wrote: >>>>> OK, Thanks. >>>>> >>>>> On Fri, Nov 27, 2015 at 7:09 PM, Karl Denninger <karl@denninger.net> wrote: >>>>>> The patch still looks good -- it ran overnight without any warnings and >>>>>> is still grinning. >>>>>> >>>>>> On 11/26/2015 23:06, Karl Denninger wrote: >>>>>>> On 11/26/2015 15:20, Svatopluk Kraus wrote: >>>>>>>> On Thu, Nov 26, 2015 at 8:08 PM, Karl Denninger <karl@denninger.net> wrote: >>>>>>>>> I'm getting these on a fairly consistent basis on a Pi that is talking >>>>>>>>> to a Zwave USB stick and a serial USB interface (two instances that both >>>>>>>>> show up as serial devices): >>>>>>>>> >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10007 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10007 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10027 >>>>>>>>> bcm_dma0: unused DMA intr CH=3, CS=20f10007 >>>>>>>>> >>>>>>>>> They're showing up maybe every half-hour or so.... doesn't appear to be >>>>>>>>> doing anything bad, other than displaying the message..... >>>>>>>>> >>>>>>>> I'm just finished a patch which works well for me. I plan to commit it >>>>>>>> after some more testing. The patch is attached if you want to test it >>>>>>>> too. >>>>>>>> >>>>>>>> Svatopluk Kraus >>>>>>>> >>>>>>> I have the patch loaded on on the Pi that is exhibiting the problem -- >>>>>>> so far looks good. >>>>>>> >>>>>> -- >>>>>> Karl Denninger >>>>>> karl@denninger.net <mailto:karl@denninger.net> >>>>>> /The Market Ticker/ >>>>>> /[S/MIME encrypted email preferred]/ >>>> -- >>>> Karl Denninger >>>> karl@denninger.net <mailto:karl@denninger.net> >>>> /The Market Ticker/ >>>> /[S/MIME encrypted email preferred]/ > > -- > Karl Denninger > karl@denninger.net <mailto:karl@denninger.net> > /The Market Ticker/ > /[S/MIME encrypted email preferred]/
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