-------- Original Message -------- Subject: Re: [Spca50x-devs] [BUG] kernel stall in spca50x driver - reopened Date: Fri, 10 Mar 2006 01:27:27 +0100 From: thomas schorpp <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] References: <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> <[EMAIL PROTECTED]>
>>>>>hello, >>>>> >>>>>touching ekiga gui video sliders triggers spurious stalls of 2.6 kernels. >>>>> >>>>>any clue? it occours more often on touching the contrast slider. >>>>>color and hue seems not to be affected. >>>>>usb seems not affected - no stall until touching sliders. >>>>> >>>>>this will be hard to debug since there will be no kernel oops and >>>>>no logs on serial cable console too. >>>>>the kernel seems to lock up in a endless loop somewhere. >>>>> >>>>>2.6.15.0 K7 kernel.org >>>>>aiptek dv3500 webcam mode >>>>>ekiga cvs + libs cvs >>>>> >>>>>y >>>>>tom >>>>> >>>> >>>> >>>>any grabber triggers. >>>> >>>>the stall seems to occur if light gets too dark (black picture). >>>> >>> >>>no also occurs on picture change. >>> >>> >>> >>> >>>>here are debug logs until deadlock (serial console gets no oops, even only >>>>once so far flashing keyboard lights): >>>> >>>> >> >> >>news: >> >>its not the spca driver. >> >>i connected to another usb plug and all is fine again. >> >>seems like a bug in the 2.6.15 kernel usb drivers: >> > > > it was a bug in kernel 2.6.15.x. > > fixed in 2.6.15.5. > > all fine again. > reopened. occurred again with 2.6.15.6 kernel and spca5xxx 3/1/2006 on fast and big brightness change. sometimes on black picture (low light). this points to a bug im picture-processing, maybe spcadecoder. i cant see anything unusual in the interrupt handler. full kernel stall. debugfs is useless here. no access under stalled kernel, i dont know if mounting to nfs mounted fs is possible. trying again with serial console kernel debugging and step tracing. y tom ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
