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Date: Sun, 15 Jun 2008 16:27:54 -0700 From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Alexey Dobriyan <adobriyan@...il.com>, Oleg Nesterov <oleg@...sign.ru>, Adrian Bunk <bunk@...nel.org>, "Rafael J. Wysocki" <rjw@...k.pl>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0 On Sun, Jun 15, 2008 at 01:32:48PM -0700, Linus Torvalds wrote: > > > On Sun, 15 Jun 2008, Paul E. McKenney wrote: > > > > > > Both patches (independently) do not help with rcutortures failures: > > > > > > [ 58.968404] rcu-torture:--- Start of test: nreaders=4 nfakewriters=4 stat_interval=0 verbose=0 test_no_idle_hz=0 shuffle_interval = 5 > > > [ 159.044524] rcu-torture: rtc: 0000000000000000 ver: 53859 tfle: 0 rta: 53859 rtaf: 18 rtf: 53797 rtmbe: 0 > > > [ 159.044527] rcu-torture: !!! Reader Pipe: 65565142 4275 1 0 0 0 0 0 0 0 0 > > > [ 159.044529] rcu-torture: Reader Batch: 65564196 5207 7 3 1 1 0 1 1 0 1 > > > [ 159.044530] rcu-torture: Free-Block Circulation: 53858 53853 53846 53843 53834 53825 53816 53808 53803 53797 0 > > > [ 159.044976] rcu-torture:--- End of test: FAILURE: nreaders=4 nfakewriters=4 stat_interval=0 verbose=0 test_no_idle_hz=0 shuffle_interval = 5 > > > > And the repeat-by is simply running LTP in parallel with rcutorture? > > This is a one-hour run of rcutorture or thereabouts? > > Should we mark PREEMPT_RCU as BROKEN for now? I don't know if anybody > really enables it, but it might be a good idea to make sure people don't > do so thinking it's good.. If that is the right thing to do. I would feel better about it if I could reproduce the failure. Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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