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* [PATCH] x86: kvm: remove NULL check before kfree
@ 2022-06-14  8:50 Dongliang Mu
  2022-06-14 12:01 ` Vitaly Kuznetsov
  0 siblings, 1 reply; 3+ messages in thread
From: Dongliang Mu @ 2022-06-14  8:50 UTC (permalink / raw)
  To: Paolo Bonzini, Sean Christopherson, Vitaly Kuznetsov, Wanpeng Li,
	Jim Mattson, Joerg Roedel, Thomas Gleixner, Ingo Molnar,
	Borislav Petkov, Dave Hansen, x86, H. Peter Anvin
  Cc: mudongliang, kvm, linux-kernel

From: mudongliang <mudongliangabcd@gmail.com>

kfree can handle NULL pointer as its argument.
According to coccinelle isnullfree check, remove NULL check
before kfree operation.

Signed-off-by: mudongliang <mudongliangabcd@gmail.com>
---
 arch/x86/kernel/kvm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 1a3658f7e6d9..d4e48b4a438b 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -236,8 +236,7 @@ void kvm_async_pf_task_wake(u32 token)
 	raw_spin_unlock(&b->lock);
 
 	/* A dummy token might be allocated and ultimately not used.  */
-	if (dummy)
-		kfree(dummy);
+	kfree(dummy);
 }
 EXPORT_SYMBOL_GPL(kvm_async_pf_task_wake);
 
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2022-06-14 13:37 UTC | newest]

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2022-06-14  8:50 [PATCH] x86: kvm: remove NULL check before kfree Dongliang Mu
2022-06-14 12:01 ` Vitaly Kuznetsov
2022-06-14 13:36   ` Dongliang Mu

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