Merge branch 'core-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
generic-ipi: fix stack and rcu interaction bug in smp_call_function_mask(), fix
diff --git a/kernel/smp.c b/kernel/smp.c
index e6084f6..782e2b9 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -135,7 +135,8 @@
*/
smp_wmb();
data->csd.flags &= ~CSD_FLAG_WAIT;
- } else
+ }
+ if (data->csd.flags & CSD_FLAG_ALLOC)
call_rcu(&data->rcu_head, rcu_free_call_data);
}
rcu_read_unlock();
@@ -289,10 +290,11 @@
data.func = quiesce_dummy;
data.info = NULL;
- data.flags = CSD_FLAG_WAIT;
- for_each_cpu_mask(cpu, mask)
+ for_each_cpu_mask(cpu, mask) {
+ data.flags = CSD_FLAG_WAIT;
generic_exec_single(cpu, &data);
+ }
}
/**
@@ -371,7 +373,7 @@
if (wait) {
csd_flag_wait(&data->csd);
if (unlikely(slowpath))
- smp_call_function_mask_quiesce_stack(allbutself);
+ smp_call_function_mask_quiesce_stack(mask);
}
return 0;
