From: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
To: tglx@linutronix.de, peterz@infradead.org
Cc: linux-kernel@vger.kernel.org,
Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Subject: [PATCH] smpboot: Add NULL check before kthread_unpark()
Date: Mon, 24 Nov 2025 10:41:44 +0530 [thread overview]
Message-ID: <20251124051144.1427596-1-kaushlendra.kumar@intel.com> (raw)
Add NULL check for tsk before calling kthread_unpark() in
smpboot_unpark_thread() to prevent potential null pointer
dereference.
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
---
kernel/smpboot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/smpboot.c b/kernel/smpboot.c
index 4503b60ce9bd..a37d25b23f58 100644
--- a/kernel/smpboot.c
+++ b/kernel/smpboot.c
@@ -225,7 +225,7 @@ static void smpboot_unpark_thread(struct smp_hotplug_thread *ht, unsigned int cp
{
struct task_struct *tsk = *per_cpu_ptr(ht->store, cpu);
- if (!ht->selfparking)
+ if (tsk && !ht->selfparking)
kthread_unpark(tsk);
}
--
2.34.1
next reply other threads:[~2025-11-24 5:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-24 5:11 Kaushlendra Kumar [this message]
2025-12-10 6:50 ` Thomas Gleixner
2025-12-10 8:21 ` Kumar, Kaushlendra
2025-12-12 1:10 ` Thomas Gleixner
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