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| author | Marco Elver <elver@google.com> | 2025-07-22 20:19:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-15 12:13:46 +0200 |
| commit | 1e30043ee3585d7e228c66f5f480ce2d66462f18 (patch) | |
| tree | 38a9198ddfbadedce2a215a312aeb0d1c7bf4200 | |
| parent | 5763daf5ca4f584dbc4ac6e2269c2fceb0053fac (diff) | |
kcsan: test: Initialize dummy variable
[ Upstream commit 9872916ad1a1a5e7d089e05166c85dbd65e5b0e8 ]
Newer compiler versions rightfully point out:
kernel/kcsan/kcsan_test.c:591:41: error: variable 'dummy' is
uninitialized when passed as a const pointer argument here
[-Werror,-Wuninitialized-const-pointer]
591 | KCSAN_EXPECT_READ_BARRIER(atomic_read(&dummy), false);
| ^~~~~
1 error generated.
Although this particular test does not care about the value stored in
the dummy atomic variable, let's silence the warning.
Link: https://lkml.kernel.org/r/CA+G9fYu8JY=k-r0hnBRSkQQrFJ1Bz+ShdXNwC1TNeMt0eXaxeA@mail.gmail.com
Fixes: 8bc32b348178 ("kcsan: test: Add test cases for memory barrier instrumentation")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Reviewed-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | kernel/kcsan/kcsan_test.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/kcsan/kcsan_test.c b/kernel/kcsan/kcsan_test.c index 117d9d4d3c3b..5121d9a6dd3b 100644 --- a/kernel/kcsan/kcsan_test.c +++ b/kernel/kcsan/kcsan_test.c @@ -533,7 +533,7 @@ static void test_barrier_nothreads(struct kunit *test) struct kcsan_scoped_access *reorder_access = NULL; #endif arch_spinlock_t arch_spinlock = __ARCH_SPIN_LOCK_UNLOCKED; - atomic_t dummy; + atomic_t dummy = ATOMIC_INIT(0); KCSAN_TEST_REQUIRES(test, reorder_access != NULL); KCSAN_TEST_REQUIRES(test, IS_ENABLED(CONFIG_SMP)); |