Hello! On Sun, Aug 06, 2006 at 01:57:34PM -0700, Roland McGrath wrote: > > Samuel Thibault, le Sat 05 Aug 2006 02:45:34 +0200, a écrit : > > > Samuel Thibault, le Sat 05 Aug 2006 02:27:35 +0200, a écrit : > > > > assert (! __spin_lock_locked (&ss->critical_section_lock)); > > > > __spin_lock (&ss->critical_section_lock);
I've now also hit that one (for the first time, as far as I can tell). > > > > Why should one check that a spinlock is free before taking it?? Here the > > > > purpose is to cancel _another_ thread, so it _can_ happen that the lock > > > > be taken any time... > > > > > > > > Shouldn't at least these assertion just be dropped? > > > > > > Maybe not the ones from other files, which are not trivial, but at least > > > this one (thread-cancel), which was reported to actually happen, and > > > which to my mind is really arguable. > > > > I got it again this afternoon... > > Please show the backtraces of relevant threads. Given that I got it on the root file system server and we (so far) have no measures of reproducing it reliably, that'd be a bit difficult. Regards, Thomas
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