Hello Marek, Thanks for your bug report! On Sat, 13 Jan 2018 00:22:34 +0100, Marek Behun wrote: > we are having a CPU stall issue with ath9k driver on pci-aardvark > (Marvell Armada 3720 (arm64)). > > The ath9k driver loads correctly and the interface connects and for > some time it works correctly, but then CPU stalls and kernel dumps > self-detected stall on CPU. > > I don't know if this is issue with aardvark or whole arm64 (someone had > a similar problem, see > https://www.spinics.net/lists/linux-wireless/msg157038.html ), but > ath10k doesn't have this problem. > > I am attaching the rcu_sched stall detection backtrace (although I > don't know if contains needed information). > > Can you please point me how to debug/solve this issue? Could you try to apply the following patches ? https://patchwork.ozlabs.org/patch/819586/ https://patchwork.ozlabs.org/patch/819589/ https://patchwork.ozlabs.org/patch/819587/ https://patchwork.ozlabs.org/patch/819592/ https://patchwork.ozlabs.org/patch/819590/ https://patchwork.ozlabs.org/patch/819591/ https://patchwork.ozlabs.org/patch/819588/ And see if it helps? If it does help, could you try with just https://patchwork.ozlabs.org/patch/819592/ applied ? Thanks! Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
