[PATCH] ASoC: SOF: imx: Prevent stack OOB read in DSP panic dump

[Péter Ujfalusi]

On 10/09/2026 16:17, Mark Brown wrote:
> On Wed, Sep 09, 2026 at 11:40:42PM +0300, Ștefan Ghețu wrote:
>> Commit 58bb5081cba1 ("ASoC: SOF: Xtensa: dump ar registers to restore
>> call stack") added a shared Xtensa helper that iterates over a flexible
>> array of AR registers (`ar[]`) controlled by `plat_hdr.numaregs`.
> 
> You've sent multiple tengentially related patches in a single thread
> without anything indicating that it's a patch series.  This is really
> confusing tooling, please resend as either a coherent series or
> individual patches.

I'm not sure if these patches should be applied for few reasons:
- orchestrating the exploit or error case require access to secret
signing key
- deploying the signed firmware needs root access
- in these cases the firmware could be prepared to pass the defensive
checks and still cause problems.
- creates false sense of security through obfuscation

Stefan, sorry for nacking it and thank you for the patches, I hope you
understand my side of the argument.

-- 
Péter