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Hello fellow #Ubuntu #clang peeps: https://answers.launchpad.net/ubuntu/+source/llvm-toolchain-14/+question/709571

Question #709571 “clang 1:14.0-55~exp2 breaks our builds” : Questions : llvm-toolchain-14 package : Ubuntu

I am a developer in the curl project. We run CI jobs using ubuntu jammy images on GitHub Actions. Starting recently, our sanitizer jobs that use clang-14 are fail in various ways. They report they install clang "1:14.
Launchpad
#ubuntu #clang
in reply to daniel:// stenberg://

daniel:// stenberg://
daniel:// stenberg://
• •
turns out to be #GitHub breakage: https://github.com/actions/runner-images/issues/9491

Crashing Clang with Asan+Ubsan builds in 20240310.1.0 Ubuntu 22.04. · Issue #9491 · actions/runner-images

Description For some reason we have all the binaries built with clang -fsanitize=address,undefined crashing on the new 20240310.1.0 Ubuntu 22.04 images. Examples: https://github.com/ovsrobot/ovs/ac...
GitHub
#github
in reply to daniel:// stenberg://

Philip
Philip
• •

kernel patch introduced here:

https://bugs.launchpad.net/bugs/1983357

The adjustable sysctl setting is vm.mmap_rnd_compat_bits. We set it back to 28 and CI unblocked.


Bug #1983357 “test_021_aslr_dapper_libs from ubuntu_qrt_kernel_s...” : Bugs : ubuntu-kernel-tests

Issue found on 5.19.0-9.9 Kinetic AMD64 systems Test log: Running test: './test-kernel-security.py' distro: 'Ubuntu 22.10' kernel: '5.19.0-9.9 (Ubuntu 5.19.0-9.9-generic 5.19.
Launchpad
in reply to Philip

daniel:// stenberg://
daniel:// stenberg://
• •
@delayload yes thanks, I'm inserting the sysctl now into or CI jobs as a work-around
@Philip
in reply to daniel:// stenberg://

Andrew Kaster
Andrew Kaster
• •

@delayload

What a coincidence, we just added that workaround to our CI as well! Hopefully Ubuntu ships a fixed gcc/asan package soon. https://github.com/SerenityOS/serenity/pull/23567


CI: Work around a libasan bug seen on Ubuntu with the Linux 6.5 kernel by trflynn89 · Pull Request #23567 · SerenityOS/serenity

We are recently seeing SEGV crashes during the build (while running code generators) from within libasan itself. Turns out this is libasan bug seen with the Linux 6.5 kernel on Ubuntu.
GitHub
@Philip
in reply to Andrew Kaster

daniel:// stenberg://
daniel:// stenberg://
• •

@akaster @delayload I opted to also make it "continue-on-error: true" because not all our Linux images can actually run that sysctl command...

https://github.com/curl/curl/pull/13124


GHA/linux: GitHub image runner update broke the sanitizer jobs by bagder · Pull Request #13124 · curl/curl

The GitHub image runner update from 20240304.1.0 to 20240310.1 introduces all sorts of problems in our sanitizer builds. According to actions/runner-images#9491: "The issue is caused by incompatibi...
GitHub
@Andrew Kaster @Philip
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