9066 2016-02-05 10:57:06 +0000 glibc: Increase nr of static TLS slots 2016-02-10 09:50:54 +0000 1 1 7 Build System, Metadata & Runtime OE-Core core unspecified x86 Multiple RESOLVED OBSOLETE Undecided normal --- 1 alexl raj.khem meta.mr.watcher meta.watcher ross.burton --- --- No (bug/feature does not impact docs) oldest_to_newest 58632 0 alexl 2016-02-05 10:57:06 +0000 This patch bumps the nr of static TLS slot from 14 to 32: http://cgit.freedesktop.org/xdg-app/freedesktop-sdk-base/tree/meta-freedesktop/recipes-core/glibc/glibc/glibc-static-tls.patch This is taken from fedora, and was added by Carlos O'Donell, who is an upstream glibc maintainer. Without this you can run into issues where multiple libraries using static TLS slots end up being used in the same process, causing linker errors killing the app. In particular, both X, mesa and python use these, so that combination fail. 58647 1 raj.khem 2016-02-05 14:42:46 +0000 This patch is ok for bringing in. What is a good way for reproducing the errror ? 58648 2 ross.burton 2016-02-05 14:45:18 +0000 I was talking to Alex earlier, their environment was Python applications using GL with specific Mesa drivers. Might be tricky to replicate, but xdg-app has been using it. 58649 3 raj.khem 2016-02-05 15:00:15 +0000 I dont see this patch being applied in fedora 58657 4 alexl 2016-02-05 16:08:16 +0000 Here is the original fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=1124987 But it seems to later have been removed: http://pkgs.fedoraproject.org/cgit/rpms/glibc.git/commit/glibc-rh1124987.patch?id=1c7c72382356644ba3aff8ad161f67e77db10e75 58658 5 alexl 2016-02-05 16:08:50 +0000 Maybe this is not needed with later versions of glibc? 58659 6 raj.khem 2016-02-05 16:11:12 +0000 I wonder why it wouldnt be needed. on the other hand, it has resource impact since now double the space will be reserved for every thread. 58815 7 alexl 2016-02-10 09:50:54 +0000 Apparently this change drops the static TLS limit: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=f8aeae347377f3dfa8cbadde057adf1827fb1d44;hp=b97eb2bdb1ed72982a7821c3078be591051cef59 This is in the glibc 2.22 release, so this patch should not be needed anymore.