linux-kernel - [PATCH] selftests: kvm: Fix the check of return value

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Date:   Tue, 27 Apr 2021 03:31:38 +0800
From:   Zhenzhong Duan <zhenzhong.duan@...el.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-kselftest@...r.kernel.org, kvm@...r.kernel.org,
        pbonzini@...hat.com, shuah@...nel.org,
        Zhenzhong Duan <zhenzhong.duan@...el.com>
Subject: [PATCH] selftests: kvm: Fix the check of return value

In vm_vcpu_rm() and kvm_vm_release(), a stale return value is checked in
TEST_ASSERT macro.

Fix it by assigning variable ret with correct return value.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...el.com>
---
 tools/testing/selftests/kvm/lib/kvm_util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index b8849a1aca79..53d3a7eb0d47 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -514,7 +514,7 @@ static void vm_vcpu_rm(struct kvm_vm *vm, struct vcpu *vcpu)
 	ret = munmap(vcpu->state, vcpu_mmap_sz());
 	TEST_ASSERT(ret == 0, "munmap of VCPU fd failed, rc: %i "
 		"errno: %i", ret, errno);
-	close(vcpu->fd);
+	ret = close(vcpu->fd);
 	TEST_ASSERT(ret == 0, "Close of VCPU fd failed, rc: %i "
 		"errno: %i", ret, errno);
 
@@ -534,7 +534,7 @@ void kvm_vm_release(struct kvm_vm *vmp)
 	TEST_ASSERT(ret == 0, "Close of vm fd failed,\n"
 		"  vmp->fd: %i rc: %i errno: %i", vmp->fd, ret, errno);
 
-	close(vmp->kvm_fd);
+	ret = close(vmp->kvm_fd);
 	TEST_ASSERT(ret == 0, "Close of /dev/kvm fd failed,\n"
 		"  vmp->kvm_fd: %i rc: %i errno: %i", vmp->kvm_fd, ret, errno);
 }
-- 
2.25.1