On Wed, Aug 26, 2009 at 08:39:54PM +0200, Ingo Molnar wrote: > > * Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote: > > > On Wed, Aug 26, 2009 at 10:49:38AM +0200, Ingo Molnar wrote: > > > > > > * tip-bot for Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote: > > > > > > > Commit-ID: 06e799764eb7c2e4640888d438c3524d756613e1 > > > > Gitweb: http://git.kernel.org/tip/06e799764eb7c2e4640888d438c3524d756613e1 > > > > Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> > > > > AuthorDate: Tue, 25 Aug 2009 18:53:37 -0700 > > > > Committer: Ingo Molnar <mingo@xxxxxxx> > > > > CommitDate: Wed, 26 Aug 2009 09:45:41 +0200 > > > > > > > > rcu: Remove lockdep annotations from RCU's _notrace() API members > > > > > > I'm afraid this does not solve the problem either - the attached > > > config crashes too. Does it boot for you? It should boot fine on > > > most 64-bit x86 systems. > > > > OK, got my hands on a 64-bit x86 system, building. When I did > > "make oldconfig" on the attached config file, I ended up with the > > following diffs. If there is some other command I should use, > > please let me know. Otherwise, will let you know how this goes. > > Have you tried it on tip/master + tip/core/rcu? make oldconfig works > fine with that here. Ah!!! I have been running just tip/core/rcu. > But ... here's something you wont like: just to make sure i sent you > the right config [i made mistakes there in the past] i picked a > 64-bit system (a different one from the one that triggered the > crash), built the config with latest tip/master (80c161b, using gcc > 4.3.2) plus tip/core/rcu (06e7997) git-merged in: > > git checkout -b tmp tip/master > git merge tip/core/rcu > > and booted it - and that did not produce any lockups. So you might > not be able to reproduce it :-/ I've re-merged core/rcu into > tip/master, maybe my tests can find another config that reproduces > the crash better. Please disregard this bugreport until i've found > that one. OK, I will give the x86_64 machine back and go back to making a synchronize_rcu_expedited() that is integrated tightly into the tree-rcu algorithm. Looks to be pretty small and simple -- but then they always do before you start debugging them... ;-) Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|