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kthread: Fix return value on kzalloc() failure in kthread_affine_preferred()

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kthread_affine_preferred() incorrectly returns 0 instead of -ENOMEM
when kzalloc() fails. Return 'ret' to ensure the correct error code is
propagated.

Fixes: 4d13f4304f ("kthread: Implement preferred affinity")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202501301528.t0cZVbnq-lkp@intel.com/
Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
This commit is contained in:
Yu-Chun Lin 2025-01-30 22:48:49 +08:00 • committed by Frederic Weisbecker
parent 2014c95afe
commit 1b0332a426
1 changed files with 2 additions and 2 deletions
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4
kernel/kthread.c
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@ -859,7 +859,7 @@ int kthread_affine_preferred(struct task_struct *p, const struct cpumask *mask)
struct kthread *kthread = to_kthread(p);
cpumask_var_t affinity;
unsigned long flags;
int ret;
int ret = 0;
if (!wait_task_inactive(p, TASK_UNINTERRUPTIBLE) || kthread->started) {
WARN_ON(1);
@ -892,7 +892,7 @@ int kthread_affine_preferred(struct task_struct *p, const struct cpumask *mask)
out:
free_cpumask_var(affinity);
return 0;
return ret;
}
/*