On Wed, Jun 26, 2019 at 2:19 PM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
> This warning can be triggered easily by userspace, so it should certainly not
> cause a panic if panic_on_warn is set.
>
Can you please also add the Reported-by tag here?
Reported-by: syzbot+c03f30b4f4c46bdf8575@xxxxxxxxxxxxxxxxxxxxxxxxx
> Suggested-by: Alexander Potapenko <glider@xxxxxxxxxx>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Acked-by: Alexander Potapenko <glider@xxxxxxxxxx>
> ---
> arch/x86/kvm/x86.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 83aefd759846..66585cf42d7f 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("user requested TSC rate below hardware speed\n");
> return -1;
> }
> }
> @@ -1567,8 +1567,8 @@ static int set_tsc_khz(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale)
> user_tsc_khz, tsc_khz);
>
> if (ratio == 0 || ratio >= kvm_max_tsc_scaling_ratio) {
> - WARN_ONCE(1, "Invalid TSC scaling ratio - virtual-tsc-khz=%u\n",
> - user_tsc_khz);
> + pr_warn_ratelimited("Invalid TSC scaling ratio - virtual-tsc-khz=%u\n",
> + user_tsc_khz);
> return -1;
> }
>
> --
> 1.8.3.1
>
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Paul Manicle, Halimah DeLaine Prado
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
