On Mon, May 06, 2013 at 12:43:51PM -0700, Paul E. McKenney wrote:
> On Mon, May 06, 2013 at 03:26:53PM -0400, Dave Jones wrote:
> > On Mon, May 06, 2013 at 12:05:22PM -0700, Paul E. McKenney wrote:
> > > On Mon, May 06, 2013 at 01:56:47PM -0400, Dave Jones wrote:
> > > > [ 0.000000] RCU debugfs-based tracing is enabled.
> > > > [ 0.000000] RCU lockdep checking is enabled.
> > > > [ 0.000000] ------------[ cut here ]------------
> > > > [ 0.000000] WARNING: at mm/nobootmem.c:215
> > ___alloc_bootmem_nopanic+0x3a/0x7d()
> > > > [ 0.000000] Modules linked in:
> > > > [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.9.0+ #128
> > > > [ 0.000000] Hardware name: /D975XBX, BIOS
> > BX97510J.86A.1209.2006.0601.1340 06/01/2006
> > > > [ 0.000000] ffffffff819f4246 ffffffff81c01e68 ffffffff816a0db2
> > ffffffff81c01ea8
> > > > [ 0.000000] ffffffff8104b1a0 ffffffff819e1078 0000000000000000
> > 0000000000000008
> > > > [ 0.000000] ffffffffffffffff 0000000000000040 0000000000000000
> > ffffffff81c01eb8
> > > > [ 0.000000] Call Trace:
> > > > [ 0.000000] [<ffffffff816a0db2>] dump_stack+0x19/0x1b
> > > > [ 0.000000] [<ffffffff8104b1a0>] warn_slowpath_common+0x70/0xa0
> > > > [ 0.000000] [<ffffffff8104b1ea>] warn_slowpath_null+0x1a/0x20
> > > > [ 0.000000] [<ffffffff81ef8914>]
> > ___alloc_bootmem_nopanic+0x3a/0x7d
> > > > [ 0.000000] [<ffffffff81ef8b87>] __alloc_bootmem+0x13/0x39
> > > > [ 0.000000] [<ffffffff81f090ad>]
> > alloc_bootmem_cpumask_var+0x1a/0x21
> > > > [ 0.000000] [<ffffffff81ef1f5a>] rcu_init+0x7f/0x261
> > > > [ 0.000000] [<ffffffff81ef4acb>] ? perf_event_init+0x178/0x181
> > > > [ 0.000000] [<ffffffff81ed6c79>] start_kernel+0x232/0x3d3
> > > > [ 0.000000] [<ffffffff81ed6846>] ? repair_env_string+0x5e/0x5e
> > > > [ 0.000000] [<ffffffff81ed6577>]
> > x86_64_start_reservations+0x2a/0x2c
> > > > [ 0.000000] [<ffffffff81ed6646>] x86_64_start_kernel+0xcd/0xd1
> > > > [ 0.000000] ---[ end trace 0acfc82c197165dd ]---
> > > > [ 0.000000] Experimental no-CBs for all CPUs
> > > > [ 0.000000] Experimental no-CBs CPUs: 0-1.
> > > > [ 0.000000] NO_HZ: Full dynticks CPUs: 1.
> > >
> > > Do you have commit fa0f93cd6a (rcu: Don't allocate bootmem from
> > rcu_init())?
> > > If not, could you please try applying it?
> >
> > That commit isn't in Linus tree.
>
> You are quite right, I am getting ahead of myself. Please see below
> for the patch.
Doesn't fix it for me.
Is it this one instead perhaps ?
89 #ifndef CONFIG_RCU_NOCB_CPU_NONE
90 if (!have_rcu_nocb_mask) {
91 alloc_bootmem_cpumask_var(&rcu_nocb_mask);
92 have_rcu_nocb_mask = true;
93 }
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