Re: [Bug 14564] capture-example sleeping function called from invalid context at arch/x86/mm/fault.c
On Mon, 4 Jan 2010, Sean wrote: > Jef, > > I upgraded to the latest v4l-dvb from http://linuxtv.org/hg/v4l-dvb, > made the kernel modules, made the v4l libraries, and recompiled > capture-example.c. Gspca now shows 2.8.0. The error still persists. Alan > Stern's latest patch to ohci-q.c traps the error. I think it is an issue > with the cpu or usb controller on the Vortex86SX SoC. The CPU is more likely than the USB controller. The erroneous pointer values we see are virtual addresses, whereas the USB controller would probably write a physical (or DMA) address if it was malfunctioning. Or it could be some bizarre timing problem with the memory bus, or something else equally obscure. You didn't mention before that this was a SoC rather than an ordinary PC. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [Bug 14564] capture-example sleeping function called from invalid context at arch/x86/mm/fault.c
bugzilla-dae...@bugzilla.kernel.org wrote: http://bugzilla.kernel.org/show_bug.cgi?id=14564 Jean-Francois Moine changed: What|Removed |Added CC||moin...@free.fr --- Comment #22 from Jean-Francois Moine 2010-01-03 07:02:45 --- Hello Sean, Sorry to be a bit late. Looking at the dmesg, I found that the gspca version was 2.7.0. May you upgrade your linux media stuff from LinuxTv.org and check if this problem still occurs? Jef Jef, I upgraded to the latest v4l-dvb from http://linuxtv.org/hg/v4l-dvb, made the kernel modules, made the v4l libraries, and recompiled capture-example.c. Gspca now shows 2.8.0. The error still persists. Alan Stern's latest patch to ohci-q.c traps the error. I think it is an issue with the cpu or usb controller on the Vortex86SX SoC. Sean -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html