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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2010-03-04 13:30:22 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2010-03-04 13:30:22 +0800 |
| commit | 74781387822cd7a549123ae2b35862bf802689be (patch) | |
| tree | 3f6844cfbe3a58206e382b82a01c9300ae582c8a /kernel/padata.c | |
| parent | 50beceba7fdf5f10a04d8a053e62d40b742099ad (diff) | |
| download | lwn-74781387822cd7a549123ae2b35862bf802689be.tar.gz lwn-74781387822cd7a549123ae2b35862bf802689be.zip | |
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/padata.c')
| -rw-r--r-- | kernel/padata.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index 6f9bcb8313d6..93caf65ff57c 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); |