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Bug#1020534: sgx: EPC section 0x50200000-0x55f7ffff (crash)



On Thursday, 22 September 2022 22:24:31 CEST Diederik de Haas wrote:
> It does NOT occur with version 5.17.3-1 and 5.18-1~exp1, but it does
> occur with 5.18.2-1, 5.18.16-1, 5.19.6-1

This is interesting...

> There are 5 commits with 'sgx' in their primary commit message:
> And they are all sequential:
> $ git log --oneline 557b6a9ccc..5aada65464

The goal was 'git bisect': https://wiki.debian.org/DebianKernel/GitBisect

My assumption was that the issue got introduced by one of those commits.
So I build a kernel based on the commit preceding those, namely:
6ad9dbb202a9 HID: multitouch: add quirks to enable Lenovo X12 trackpoint

Booting into that kernel showed the error, so it wasn't introduced with the 
'suspect list'.

Then I build a new kernel based on 5.18.0 (the release by Linus) ... and that 
also showed the error!!
Booting into 5.18.0-trunk-amd64 (=5.18-1~exp1) did NOT show the issue!

The '.config' was obtained by "cp /boot/config-5.18.0-4-amd64 .config"

IOW: the Debian provided 5.18.0 kernel did not show the issue, while the self 
compiled 5.18.0 kernel did!

Did I do something wrong? What should I do next?

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