First of all, in order to build with clang at all, one must first apply Valentin Obst's build fix for LLVM [1]. Once that is done, then when building with clang, via:
make LLVM=1 -C tools/testing/selftests
...clang finds and warning about some uninitialized variables. Fix these by initializing them.
[1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c...
Signed-off-by: John Hubbard jhubbard@nvidia.com --- tools/testing/selftests/cgroup/test_zswap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/cgroup/test_zswap.c b/tools/testing/selftests/cgroup/test_zswap.c index f0e488ed90d8..6aac80eadc5d 100644 --- a/tools/testing/selftests/cgroup/test_zswap.c +++ b/tools/testing/selftests/cgroup/test_zswap.c @@ -257,7 +257,7 @@ static int test_no_invasive_cgroup_shrink(const char *root) { int ret = KSFT_FAIL; size_t control_allocation_size = MB(10); - char *control_allocation, *wb_group = NULL, *control_group = NULL; + char *control_allocation = NULL, *wb_group = NULL, *control_group = NULL;
wb_group = setup_test_group_1M(root, "per_memcg_wb_test1"); if (!wb_group) @@ -342,7 +342,7 @@ static int test_no_kmem_bypass(const char *root) struct sysinfo sys_info; int ret = KSFT_FAIL; int child_status; - char *test_group; + char *test_group = NULL; pid_t child_pid;
/* Read sys info and compute test values accordingly */