rpi/dwc2 kernel panics

[Andre Heider]

On Thu, Feb 13, 2014 at 10:08:21PM -0700, Stephen Warren wrote:
> On 02/13/2014 11:47 AM, Andre Heider wrote:
> > On Wed, Feb 12, 2014 at 08:00:18PM -0700, Stephen Warren wrote:
> >> On 02/12/2014 11:52 AM, Andre Heider wrote:
> >>> Hi guys,
> >>>
> >>> I just tried today's Linus' master (45f7fdc2ff) with usb-linus (3635c7e2d5)
> >>> merged on top to give the latest dwc2 fixes another try.
> >>> Unfortunately I'm getting various crashes on system startup. Kernel boots
> >>> fine, dwc2 and the integrated smsc95xx are detected, but somewhere in the
> >>> init sequence the system panics.
> ...
> > Which one are you using? gcc-arm-linux-gnueabi [2] or
> > gcc-arm-linux-gnueabihf [3]? Maybe there's a reason the former is 4.7
> > while the latter is 4.8?
> > In case you're using 4.7, care to give 4.8 a try?
> 
> I tried gcc-arm-linux-gnueabihf from Ubuntu Saucy, and gcc-arm-none-eabi
> from a Debian Unstable chroot, and got an apparently stable system, with
> USB enabled and running "apt-get update" over USB network.
> 
> With the Saucy toolchain, I did see the following 3 times, which I
> haven't seen before, but the system didn't panic:
> 
> EXT4-fs error (device mmcblk0p2) in ext4_da_write_end:2780: error 579650476

I've seen some variant of that too.

Maybe the issue is similar to the last one, where the kernel layout is
relevant.

Attached my current .config, maybe you can reproduce with that. (I bumped the
stack protector option to "strong" for my last gcc 4.9 test drive, downgrade
to regular).

Thanks,
Andre
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