[Cbe-oss-dev] Hardware watchpoints cause kernel hang

Benjamin Herrenschmidt benh at kernel.crashing.org
Wed Feb 14 09:23:10 EST 2007


On Tue, 2007-02-13 at 13:12 -0800, Paul_Rasmussen at playstation.sony.com
wrote:
> I have discovered that setting a hardware watchpoint in PPE code with 
> ptrace(PTRACE_SET_DEBUGREG, tid, 0, 6) for example and then continuing 
> the program causes our current version of the cell-linux OS to hang (its 
> a complete hang, not a panic and is repeatable every time).  Is this 
> something that someone could take a look at?  If there's any more 
> information you would like about this, please let me know.

We'll have a look. In the meantime, if you had a test-case program, that
would be nice.

Thanks,
Ben.





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