** Description changed: - Seeing this in autopkgtest for the 5.4.0-18 kernel: + Seeing this in autopkgtest for the 5.4.0-18 kernel. Only happens on + s390, other architectures are fine. - Stack dump: - 0. Program arguments: llc -march=bpf -mcpu=probe -filetype=obj -o /tmp/autopkgtest.92AlD3/build.vya/src/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/bpf/btf__core_reloc_nesting___err_array_container.o - #0 0x000003ff830ab14a (/lib/s390x-linux-gnu/libLLVM-10.so.1+0x9ab14a) - Segmentation fault (core dumped) + Stack dump: + 0. Program arguments: llc -march=bpf -mcpu=probe -filetype=obj -o /tmp/autopkgtest.92AlD3/build.vya/src/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/bpf/btf__core_reloc_nesting___err_array_container.o + #0 0x000003ff830ab14a (/lib/s390x-linux-gnu/libLLVM-10.so.1+0x9ab14a) + Segmentation fault (core dumped) Full log: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/s390x/l/linux/20200310_180956_146bd@/log.gz This did not happen for the 5.4.0-17 upload with llvm-9, with no changes to the bpf program being compiled when the segfault happens between the -17 and -18 uploads. + + To reproduce, clone the focal kernel tree and build the bpf selftests. + + $ git clone --single-branch --depth=1 -b master-next git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal + $ make -C focal/tools/testing/selftests TARGETS=bpf
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1866882 Title: segfault in libllvm-10 when building kernel bpf selftests on s390 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1866882/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
