On 2010-11-04 9:59 PM, Björn Smedman wrote: > Hi all, > > I'm trying to stabilize ath9k on an Atheros AR913x based platform. > > One type of problem is that sometimes, under high ath9k tx/rx load, > the system locks up with lots of partial oopses like below spewing out > on the serial. I'm not really qualified to read these but ath9k has a > history of memory corruption and DMA problems. That in combination > with the rater weird message, that __bzero and print_modules contain > reserved instructions, makes me think that the problem may be that > pages containing executable kernel code are accidentally DMA:ed over. > :P Is that even possible? If so, can it be made impossible? :) > > Other than that, what could it be? > > Reserved instruction in kernel code[#1]: > Cpu 0 [...] > > And so on until serial breaks down... Then all leds except two come on > and it freezes in that position. Not even the hardware watchdog can > get to it it seems. :( If not even the watchdog can recover it, then it doesn't really sound like a DMA issue. Last time I saw something like that on one of my devices, the power supply was too weak. Are you sure that it's not caused by a power or heat issue - or some other kind of hardware problem?
- Felix _______________________________________________ openwrt-devel mailing list [email protected] https://lists.openwrt.org/mailman/listinfo/openwrt-devel
