Hi, On 09/26/2014 09:26 PM, Siddhesh Poyarekar wrote: > On Fri, Sep 26, 2014 at 08:53:59PM +0200, Hans de Goede wrote: >> I've just tested the F-21 update for this, and I'm afraid that the >> problem is still present there. I've also regenerated my initrd to make >> sure that that included the new glibc too, but that did not help. > > Do you still see crashes in systemd within pthread code or is it > something else? The update should have disabled lock elision > completely, so if it SIGILLs on haswell, it ought to SIGILL on > everything, which it doesn't. I'm still seeing SIGILL in systemd pthread usage. The problem is that the glibc update still has a code path which uses TSX, see: https://bugzilla.redhat.com/show_bug.cgi?id=1146967#c14 There is a scratch build here: http://koji.fedoraproject.org/koji/taskinfo?taskID=7707772 Which fixes the last TSX usage in glibc and I can confirm that that really fixes things. > Either way, an early microcode update is indeed the best way out, so > if that works, we could just drop the glibc update. But it would be > great to know what's actually going wrong so that if it's something in > glibc even with elision disabled, we can get that fixed. Agreed. Regards, Hans -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
