linux-kernel - [PATCH] kvm: svm: de-allocate svm_cpu_data for all cpus in svm_cpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20201203205939.1783969-1-jacobhxu@google.com>
Date:   Thu,  3 Dec 2020 12:59:39 -0800
From:   Jacob Xu <jacobhxu@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Jim Mattson <jmattson@...gle.com>,
        Oliver Upton <oupton@...gle.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jacob Xu <jacobhxu@...gle.com>
Subject: [PATCH] kvm: svm: de-allocate svm_cpu_data for all cpus in svm_cpu_uninit()

The cpu arg for svm_cpu_uninit() was previously ignored resulting in the
per cpu structure svm_cpu_data not being de-allocated for all cpus.

Signed-off-by: Jacob Xu <jacobhxu@...gle.com>
---
 arch/x86/kvm/svm/svm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 79b3a564f1c9..da7eb4aaf44f 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -530,12 +530,12 @@ static int svm_hardware_enable(void)
 
 static void svm_cpu_uninit(int cpu)
 {
-	struct svm_cpu_data *sd = per_cpu(svm_data, raw_smp_processor_id());
+	struct svm_cpu_data *sd = per_cpu(svm_data, cpu);
 
 	if (!sd)
 		return;
 
-	per_cpu(svm_data, raw_smp_processor_id()) = NULL;
+	per_cpu(svm_data, cpu) = NULL;
 	kfree(sd->sev_vmcbs);
 	__free_page(sd->save_area);
 	kfree(sd);
-- 
2.29.2.576.ga3fc446d84-goog