KVM: selftests: Close opened file descriptor in stable_tsc_check_supported()

Close the "current_clocksource" file descriptor before returning or exiting
from stable_tsc_check_supported() in vmx_nested_tsc_scaling_test.

Signed-off-by: Hao Ge <gehao@kylinos.cn>
Reviewed-by: Vipin Sharma <vipinsh@google.com>
Link: https://lore.kernel.org/r/20230405101350.259000-1-gehao@kylinos.cn
Signed-off-by: Sean Christopherson <seanjc@google.com>

diff --git a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
index d427eb146bc5818e8d96a93da7c00a1b485bcf81..fa03c8d1ce4edb1d38a9be4aa4a7e60ea68f65a5 100644 (file)
--- a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
+++ b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
@@ -126,12 +126,16 @@ static void stable_tsc_check_supported(void)
                goto skip_test;
 
        if (fgets(buf, sizeof(buf), fp) == NULL)
-               goto skip_test;
+               goto close_fp;
 
        if (strncmp(buf, "tsc", sizeof(buf)))
-               goto skip_test;
+               goto close_fp;
 
+       fclose(fp);
        return;
+
+close_fp:
+       fclose(fp);
 skip_test:
        print_skip("Kernel does not use TSC clocksource - assuming that host TSC is not stable");
        exit(KSFT_SKIP);