https://bugzilla.suse.com/show_bug.cgi?id=1188712 Bug ID: 1188712 Summary: VDSO change on PPC causes random segfaults in Go applications Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: PowerPC-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: fvogt@suse.com QA Contact: qa-bugs@suse.de CC: jkowalczyk@suse.com Found By: --- Blocker: --- https://lwn.net/ml/linux-kernel/cover.1601365869.git.christophe.leroy@csgrou... changed the implementation of the VDSO from a PowerPC specific one to the generic C version. Apparently executables built with Go before 1.17 implicitly relied on the fact that the VDSO did not mangle r30, but with the generic C implementation it now does. This leads to random crashes in Go executables. This is fixed with https://go-review.googlesource.com/c/go/+/334410/1 and I submitted this to our go1.16 package with https://build.opensuse.org/request/show/907807. However, all executables built with a compiler which doesn't include that will not work on kernel >= 5.13. This probably affects containerized workloads as well. So it might be useful to raise awareness of this issue. -- You are receiving this mail because: You are the assignee for the bug.