[llvm] Add step to lower ASLR bits to 28 when running libc++ sanitizer builds. (PR #146273)

[via llvm-commits]

EricWF wrote:

OK, so this doesn't work.

It turns out that half of the clusters are running on ubuntu-22.04, and the other ones are on ubuntu-24, the latter have 32 bits of randomization, the former 28. 

I don't believe I can downgrade the clusters on Ubuntu 24, and the clusters still on version 22 will likely be auto-upgraded soon, so that's unfortunate.

I've tried setting the sysctl settings on the cluster using the instructions [here]( https://cloud.google.com/kubernetes-engine/docs/how-to/node-system-config), but they don't work.





https://github.com/llvm/llvm-project/pull/146273