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authorSteffen Klassert <steffen.klassert@secunet.com>2010-03-04 13:30:22 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2010-03-04 13:30:22 +0800
commit74781387822cd7a549123ae2b35862bf802689be (patch)
tree3f6844cfbe3a58206e382b82a01c9300ae582c8a /kernel
parent50beceba7fdf5f10a04d8a053e62d40b742099ad (diff)
downloadop-kernel-dev-74781387822cd7a549123ae2b35862bf802689be.zip
op-kernel-dev-74781387822cd7a549123ae2b35862bf802689be.tar.gz
padata: Allocate the cpumask for the padata instance
The cpumask of the padata instance was used without allocated. This caused boot crashes if CONFIG_CPUMASK_OFFSTACK is enabled. This patch fixes this by doing proper allocation for this cpumask. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/padata.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/padata.c b/kernel/padata.c
index 6f9bcb8..93caf65 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -642,6 +642,9 @@ struct padata_instance *padata_alloc(const struct cpumask *cpumask,
if (!pd)
goto err_free_inst;
+ if (!alloc_cpumask_var(&pinst->cpumask, GFP_KERNEL))
+ goto err_free_pd;
+
rcu_assign_pointer(pinst->pd, pd);
pinst->wq = wq;
@@ -654,12 +657,14 @@ struct padata_instance *padata_alloc(const struct cpumask *cpumask,
pinst->cpu_notifier.priority = 0;
err = register_hotcpu_notifier(&pinst->cpu_notifier);
if (err)
- goto err_free_pd;
+ goto err_free_cpumask;
mutex_init(&pinst->lock);
return pinst;
+err_free_cpumask:
+ free_cpumask_var(pinst->cpumask);
err_free_pd:
padata_free_pd(pd);
err_free_inst:
@@ -685,6 +690,7 @@ void padata_free(struct padata_instance *pinst)
unregister_hotcpu_notifier(&pinst->cpu_notifier);
padata_free_pd(pinst->pd);
+ free_cpumask_var(pinst->cpumask);
kfree(pinst);
}
EXPORT_SYMBOL(padata_free);
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