[PATCH v4 24/25] selftests/rseq: parametrized test: Report/abort on negative cpu id
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: 2022-09-22 11:11:04
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Subsystem:
kernel selftest framework, restartable sequences support, the rest · Maintainers:
Shuah Khan, Mathieu Desnoyers, Peter Zijlstra, "Paul E. McKenney", Boqun Feng, Linus Torvalds
Report and abort when a negative cpu id value is observed by the spinlock test. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> --- tools/testing/selftests/rseq/param_test.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/tools/testing/selftests/rseq/param_test.c b/tools/testing/selftests/rseq/param_test.c
index f3687a90ec0c..1c86b45bd579 100644
--- a/tools/testing/selftests/rseq/param_test.c
+++ b/tools/testing/selftests/rseq/param_test.c@@ -410,6 +410,11 @@ static int rseq_this_cpu_lock(struct percpu_lock *lock) int ret; cpu = get_current_cpu_id(); + if (cpu < 0) { + fprintf(stderr, "pid: %d: tid: %d, cpu: %d: Observing vcpu id %d\n", + getpid(), (int) rseq_gettid(), rseq_current_cpu_raw(), cpu); + abort(); + } ret = rseq_cmpeqv_storev(RSEQ_MO_RELAXED, RSEQ_PERCPU, &lock->c[cpu].v, 0, 1, cpu);
--
2.25.1