On Wed, Jan 13, 2010 at 10:57:34PM +0100, Rafael J. Wysocki wrote: > On Wednesday 13 January 2010, Américo Wang wrote: > > On Mon, Jan 11, 2010 at 6:32 AM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: > > > This message has been generated automatically as a part of a report > > > of recent regressions. > > > > > > The following bug entry is on the current list of known regressions > > > from 2.6.32. Please verify if it still should be listed and let me know > > > (either way). > > > > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=15041 > > > Subject : Pagemap endless read loop with LTP > > > Submitter : Andi Kleen <andi@xxxxxxxxxxxxxx> > > > Date : 2010-01-10 2:09 (1 days old) > > > References : http://marc.info/?l=linux-kernel&m=126308941423848&w=4 > > > > > > > According to Andi's later reply, it shoud not be an endless loop, > > it just takes a rather long time. > > Andi? It'll try to read 47 bits worth of 0s on 64bit x86-64. I haven't tried to wait until that finishes, but I estimate a few months of CPU time at least. The interface is just misdesigned, but I guess we cannot do anything about that for now. LTP will just need to do a workaround. This unfortunately breaks older LTP versions. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
