diff options
| author | Pranith Kumar <bobby.prani@gmail.com> | 2014-07-25 16:02:07 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-07-27 11:39:36 -0700 |
| commit | 9ebd50ee3285a16fb2167fc41f806ffe196da67d (patch) | |
| tree | 88cdbc7de50a60b9db9032506bae5ef4b41caa6f /kernel/rcu | |
| parent | 0c2882c52685858f1bb01202efe8ca3b75287ccd (diff) | |
rcu: Check the return value of zalloc_cpumask_var()
This commit checks the return value of the zalloc_cpumask_var() used for
allocating cpumask for rcu_nocb_mask.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 91170e08787b..0598be51ed66 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -2440,7 +2440,10 @@ void __init rcu_init_nohz(void) #endif /* #if defined(CONFIG_NO_HZ_FULL) && !defined(CONFIG_NO_HZ_FULL_ALL) */ if (!have_rcu_nocb_mask && need_rcu_nocb_mask) { - zalloc_cpumask_var(&rcu_nocb_mask, GFP_KERNEL); + if (!zalloc_cpumask_var(&rcu_nocb_mask, GFP_KERNEL)) { + pr_info("rcu_nocb_mask allocation failed, callback offloading disabled.\n"); + return; + } have_rcu_nocb_mask = true; } if (!have_rcu_nocb_mask) |