Re: rcu: eqs related warnings in linux-next

2012-09-29 Thread Paul E. McKenney
On Sat, Sep 29, 2012 at 06:49:51PM +0200, Sasha Levin wrote: > On 09/29/2012 03:37 PM, Paul E. McKenney wrote: > > Sasha, is the easily reproducible? If so, could you please try the > > previous patch? It will likely give us more information on where > > this bug really lives. (Yes, it might tot

Re: rcu: eqs related warnings in linux-next

2012-09-29 Thread Sasha Levin
On 09/29/2012 03:37 PM, Paul E. McKenney wrote: > Sasha, is the easily reproducible? If so, could you please try the > previous patch? It will likely give us more information on where > this bug really lives. (Yes, it might totally obscure the bug, but > in that case we will just need to try som

Re: rcu: eqs related warnings in linux-next

2012-09-29 Thread Paul E. McKenney
On Sat, Sep 29, 2012 at 03:50:07PM +0200, Frederic Weisbecker wrote: > On Sat, Sep 29, 2012 at 06:37:37AM -0700, Paul E. McKenney wrote: > > On Sat, Sep 29, 2012 at 02:25:04PM +0200, Frederic Weisbecker wrote: > > > 2012/9/29 Sasha Levin : > > > > Maybe I could help here a bit. > > > > > > > > lapp

Re: rcu: eqs related warnings in linux-next

2012-09-29 Thread Frederic Weisbecker
On Sat, Sep 29, 2012 at 06:37:37AM -0700, Paul E. McKenney wrote: > On Sat, Sep 29, 2012 at 02:25:04PM +0200, Frederic Weisbecker wrote: > > 2012/9/29 Sasha Levin : > > > Maybe I could help here a bit. > > > > > > lappy linux # addr2line -i -e vmlinux 8111d45f > > > /usr/src/linux/kernel/ti

Re: rcu: eqs related warnings in linux-next

2012-09-29 Thread Paul E. McKenney
On Sat, Sep 29, 2012 at 02:25:04PM +0200, Frederic Weisbecker wrote: > 2012/9/29 Sasha Levin : > > Maybe I could help here a bit. > > > > lappy linux # addr2line -i -e vmlinux 8111d45f > > /usr/src/linux/kernel/timer.c:549 > > /usr/src/linux/include/linux/jump_label.h:101 > > /usr/src/linux

Re: rcu: eqs related warnings in linux-next

2012-09-29 Thread Frederic Weisbecker
2012/9/29 Sasha Levin : > Maybe I could help here a bit. > > lappy linux # addr2line -i -e vmlinux 8111d45f > /usr/src/linux/kernel/timer.c:549 > /usr/src/linux/include/linux/jump_label.h:101 > /usr/src/linux/include/trace/events/timer.h:44 > /usr/src/linux/kernel/timer.c:601 > /usr/src/lin

Re: rcu: eqs related warnings in linux-next

2012-09-28 Thread Sasha Levin
On 09/28/2012 07:31 PM, Paul E. McKenney wrote: > On Fri, Sep 28, 2012 at 03:36:43PM +0200, Frederic Weisbecker wrote: >> > On Fri, Sep 28, 2012 at 02:51:03PM +0200, Sasha Levin wrote: >>> > > Hi all, >>> > > >>> > > While fuzzing with trinity inside a KVM tools guest with the latest >>> > > linu

Re: rcu: eqs related warnings in linux-next

2012-09-28 Thread Paul E. McKenney
On Fri, Sep 28, 2012 at 03:36:43PM +0200, Frederic Weisbecker wrote: > On Fri, Sep 28, 2012 at 02:51:03PM +0200, Sasha Levin wrote: > > Hi all, > > > > While fuzzing with trinity inside a KVM tools guest with the latest > > linux-next kernel, I've stumbled on the following during boot: > > > > [

Re: rcu: eqs related warnings in linux-next

2012-09-28 Thread Frederic Weisbecker
On Fri, Sep 28, 2012 at 02:51:03PM +0200, Sasha Levin wrote: > Hi all, > > While fuzzing with trinity inside a KVM tools guest with the latest > linux-next kernel, I've stumbled on the following during boot: > > [ 199.224369] WARNING: at kernel/rcutree.c:513 > rcu_eqs_exit_common+0x4a/0x3a0()

Re: rcu: eqs related warnings in linux-next

2012-09-28 Thread Frederic Weisbecker
On Fri, Sep 28, 2012 at 02:51:03PM +0200, Sasha Levin wrote: > Hi all, > > While fuzzing with trinity inside a KVM tools guest with the latest > linux-next kernel, I've stumbled on the following during boot: > > [ 199.224369] WARNING: at kernel/rcutree.c:513 > rcu_eqs_exit_common+0x4a/0x3a0()

rcu: eqs related warnings in linux-next

2012-09-28 Thread Sasha Levin
Hi all, While fuzzing with trinity inside a KVM tools guest with the latest linux-next kernel, I've stumbled on the following during boot: [ 199.224369] WARNING: at kernel/rcutree.c:513 rcu_eqs_exit_common+0x4a/0x3a0() [ 199.225307] Pid: 1, comm: init Tainted: GW 3.6.0-rc7-next-201