glibc-2.5 test suite hangs/crashes the machine

Jeff Bailey jbailey at
Sat Oct 28 02:22:33 EST 2006

Le vendredi 27 octobre 2006 à 07:56 +0200, Fabio Massimo Di Nitto a
écrit :
> Hi everybody,
> i am in the process of bootstrapping the new toolchain for ubuntu and I am
> hitting a problem building glibc-2.5 on ppc.
> This behaviour has been reproduced on 2.6.15/2.6.17 and 2.6.19-rc2 (where the
> machine crashes) and with ppc32 and ppc64 kernels.
> A hard reboot of the machine is required to get rid of the Zl processes hanging
> around that keep spinning the CPU at 100%.
> I did place sources here:
> but i start to believe it is a kernel bug we are exploiting only now.
> Any hint or help for what to look for would be extremely appreciated.

Heya Fabio, just an update, it looks like the tests that are zombie'ing
are the nptl tst-robust[1-8] tests.  According to /proc/##/wchan, the
tasks are cheerfully spinning in do_exit.

If there's other info I can get you, lemme know.

Jeff Bailey
Manager, Technical Support
Canonical Ltd. - Sales, Service, and Support.
+1 514 940-8910

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