linux-kernel - [PATCH v3 2/8] KVM: selftests: x86: sync_regs_test: Get regs structure before modifying it

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

Date: Thu,  8 Feb 2024 21:48:38 +0100
From: Thomas Huth <thuth@...hat.com>
To: kvm@...r.kernel.org,
	Sean Christopherson <seanjc@...gle.com>
Cc: linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Paolo Bonzini <pbonzini@...hat.com>,
	Andrew Jones <ajones@...tanamicro.com>
Subject: [PATCH v3 2/8] KVM: selftests: x86: sync_regs_test: Get regs structure before modifying it

The regs structure just accidentally contains the right values
from the previous test in the spot where we want to change rbx.
It's cleaner if we properly initialize the structure here before
using it.

Suggested-by: Sean Christopherson <seanjc@...gle.com>
Signed-off-by: Thomas Huth <thuth@...hat.com>
---
 tools/testing/selftests/kvm/x86_64/sync_regs_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/kvm/x86_64/sync_regs_test.c b/tools/testing/selftests/kvm/x86_64/sync_regs_test.c
index 8c3898cf79b31..1cd19dfa0046c 100644
--- a/tools/testing/selftests/kvm/x86_64/sync_regs_test.c
+++ b/tools/testing/selftests/kvm/x86_64/sync_regs_test.c
@@ -315,6 +315,7 @@ int main(int argc, char *argv[])
 	run->kvm_valid_regs = 0;
 	run->kvm_dirty_regs = 0;
 	run->s.regs.regs.rbx = 0xAAAA;
+	vcpu_regs_get(vcpu, &regs);
 	regs.rbx = 0xBAC0;
 	vcpu_regs_set(vcpu, &regs);
 	vcpu_run(vcpu);
-- 
2.43.0