On Sunday 25 March 2001 18:57, Voytek Lapinski wrote:
> On Sunday 25 March 2001 16:27, you wrote:
> > Found the problem with your signal 11 with strange traces from inside
> > LinuxThreads. This was a hard concurrency bug - the problem was that a
> > memory reference passed to pthread_create was getting invalidated by the
> > thread that pthread_create was launching before pthread_create would right
> > to that value. Took me a while to figure this out - I have scrutinized the
> > entire thread creation mechanism in LinuxThreads suspecting a bad mmap or
> > munmap somewhere before I realized the problem had nothing to do with
> > LinuxThreads internal code.
> >
> > I believe the problem has existed for as long as MySQL has been around -
> > back then the machines were just not fast enough to make this condition
> > happen frequently enough for someone to be able to create a repeatable
> > case. I have fixed it by extending the critical region. Here is the patch:
>
> Fantastic! I take it you won't be wanting the better back trace then?
As long as you stop getting them :-)
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