Re: [2.6.15-rc7-rt1] explosions in nptl mutex tests

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At 06:10 PM 12/31/2005 +0100, Mike Galbraith wrote:
At 05:36 PM 12/31/2005 +0100, Mike Galbraith wrote:

As luck would have it, just as I was collecting the data, there was a major explosion. Box was slogging through glibc make check, and when it hit the mutex tests in nptl, KaBOOM. Ding-dong-dead box... [reboot] oh my, seems repeatable. Guess I'll see if I can find my serial console cable instead of typing make install as originally planned :)


Oopsen attached. First two times it exploded on tst-mutex7, this time that passed, but it exploded on tst-mutex7a.

Further datapoint: on a lark, I tried 8k stacks, and my symptoms changed - tst-mutex7 never failed, but running tst-mutex7a in a tight loop crashed the box reliably though differently. I then recompiled with no debug options enabled, and ran all mutex tests in a loop for a couple of hours with no crash.

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