Messages in this thread |  | | | Date | Tue, 24 Apr 2001 14:15:25 -0600 | | From | Michal Jaegermann <> | | Subject | Re: BUG: Global FPU corruption in 2.2 |
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On Tue, Apr 24, 2001 at 06:56:32PM +0200, Christian Ehrhardt wrote: > On Tue, Apr 24, 2001 at 09:10:07AM -0700, Linus Torvalds wrote: > > ptrace only operates on processes that are stopped. So there are no > > locking issues - we've synchronized on a much higher level than a > > spinlock or semaphore. > > This is only true for requests other than PTRACE_ATTACH and > PTRACE_ATTACH is exactly what I'm worried about.
May I remind everybody that at the beginning of this thread I posted another example, from an SMP Alpha, of FPU problems. It certainly was not exactly like the one under discussion but it looked that it had a similar "smell" to it.
It looks like that to reproduce this Alpha example one needs processors with a rather fast clock and this hardware version is not yet very widely available.
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