On 12 Mar 2024, at 12:47, Ilya Maximets wrote:
> Starting with image version 20240310.1.0, GitHub runners are using
> 32-bit entropy for ASLR:
>
> $ sudo sysctl -a | grep vm.mmap.rnd
> vm.mmap_rnd_bits = 32
> vm.mmap_rnd_compat_bits = 16
>
> This breaks all the asan-enabled builds, because older asan gets
> confused by memory mappings and crashes with segmentation fault.
>
> The issue is fixed in newer releases of llvm:
>
> https://github.com/llvm/llvm-project/commit/fb77ca05ffb4f8e666878f2f6718a9fb4d686839
> https://reviews.llvm.org/D148280
>
> But these are not available in Ubuntu 22.04 image.
>
> This should be fixed by GitHub, but until new images are available
> reducing ASLR entropy manually to 28 bits to make builds work.
>
> Reported-at: https://github.com/actions/runner-images/issues/9491
> Signed-off-by: Ilya Maximets <i.maxim...@ovn.org>
Thanks for finding the solution to this!
Acked-by: Eelco Chaudron <echau...@redhat.com>
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