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alistair23-linux
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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>
hifive-unleashed-5.1
Steffen Klassert 2010-03-04 13:30:22 +08:00 committed by Herbert Xu
parent 50beceba7f
commit 7478138782
1 changed files with 7 additions and 1 deletions
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8
kernel/padata.c
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@ -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);