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On Sat, Nov 26, 2005 at 11:39:55AM +0800, Wu Fengguang wrote: > On Fri, Nov 25, 2005 at 03:28:29PM -0800, Paul E. McKenney wrote: > > And here is an alternative patch that assumes that the answer to both > > questions above is "no". It is shorter, though mostly due to use of > > the list_splice_init() and list_for_each_entry_safe() primitives. > > Ok, I'll try it. But it may take time. > > Currently I'm running oprofile on linux-2.6.15-rc2-mm1. It seems the bug is not > quite reproducible. I'll report again if there are any new findings. Yep, the bug is indeed non-deterministic. For it to happen, softirq must interrupt a "task_mortuary" critical section, and that softirq must execute a task-struct RCU callback. Thanx, Paul - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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