On Tue, Mar 30, 2010 at 04:38:08PM -0400, Carlos O'Donell wrote: > * Thread A enters LWS CAS (no lock on UP) > * Thread A writes to CAS address causing COW > * Thread A sleeps. > * Thread A completes COW, but finishes time slice before the write is restarted. > * Thread B enters LWS CAS (no lock on UP) > * Thread B writes to CAS address, and finishes time slice. > * Thread A writes to CAS address and clobbers B's value. > > The solution is to add the locks to the UP case to avoid this problem. > Yes, removing the CONFIG_SMP on that bit looks like it will solve the problem. regards, Kyle -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
