linux-kernel - [PATCH] KVM: x86: degrade WARN to pr_warn

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Date:   Wed, 26 Jun 2019 14:17:46 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Alexander Potapenko <glider@...gle.com>
Subject: [PATCH] KVM: x86: degrade WARN to pr_warn_ratelimited

This warning can be triggered easily by userspace, so it should certainly not
cause a panic if panic_on_warn is set.

Suggested-by: Alexander Potapenko <glider@...gle.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/x86.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 83aefd759846..31cdb0b8d418 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1557,7 +1557,7 @@ static int set_tsc_khz(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale)
 			vcpu->arch.tsc_always_catchup = 1;
 			return 0;
 		} else {
-			WARN(1, "user requested TSC rate below hardware speed\n");
+			pr_warn_ratelimited(1, "user requested TSC rate below hardware speed\n");
 			return -1;
 		}
 	}
-- 
1.8.3.1