NACK: [SRU][Bionic/Artful] fix false positives in W+X checking

Kleber Souza kleber.souza at
Tue May 15 16:00:27 UTC 2018

On 05/08/18 18:24, Manoj Iyer wrote:
> Please consider this patch to Bionic, Artful and apply to Cosmic. On
> ARM64 system from Cavium and Qualcomm we see random false positive
> warning messages wrt W+X checking.  "arm64/mm: Found insecure W+X mapping at address 0000000000a99000/0xa99000" while booting.
> A kernel with the upstream patch is avaliable in ppa:manjo/lp1769696,
> the patch was cleanly cherry-picked from linux-next on to bionic and
> also cleanly applies to Artful. I tested the kernel on a QTI QDF2400 and
> Cavium ThunderX system. Since we cannot reliably and consistently
> reproduce the warning, I did not see the warning after doing repeated
> reboots with stock bionic.

A v2 of this patch has been sent.


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