Unable to read firmware registers on crash?
michal.kazior at tieto.com
Fri Feb 6 04:19:32 PST 2015
On 4 February 2015 at 05:28, Ben Greear <greearb at candelatech.com> wrote:
> Well, it seems to work at least when I crash it nicely with the
> debugfs firmware-assert hooks. Tested on x86...if I have endian
> issues, things might go poorly on other platforms.
> Here is patch I am using in ath10k... I added similar logic to the
> CT firmware. Now, will have to see if we can reproduce the crash where
> CE transport totally fails...
If you have a system capable of IOMMU you can force CE to access a
non-mapped memory. You could try inserting a bogus CE item address in
one of its rings.
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