Message ID | 20240503035105.93280-3-jhubbard@nvidia.com (mailing list archive) |
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State | New |
Headers | show
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selftests/cgroups: fix clang build failures, warnings
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On Thu, May 02, 2024 at 08:51:03PM -0700, John Hubbard wrote: > 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 warns about fd being used uninitialized, in > test_memcg_reclaim()'s error handling path. > > Fix this by initializing fd to -1. > > [1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c49f@valentinobst.de/ > > Signed-off-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
diff --git a/tools/testing/selftests/cgroup/test_memcontrol.c b/tools/testing/selftests/cgroup/test_memcontrol.c index c7c9572003a8..a97832b0c1cd 100644 --- a/tools/testing/selftests/cgroup/test_memcontrol.c +++ b/tools/testing/selftests/cgroup/test_memcontrol.c @@ -716,7 +716,9 @@ static bool reclaim_until(const char *memcg, long goal) */ static int test_memcg_reclaim(const char *root) { - int ret = KSFT_FAIL, fd, retries; + int ret = KSFT_FAIL; + int fd = -1; + int retries; char *memcg; long current, expected_usage;
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 warns about fd being used uninitialized, in test_memcg_reclaim()'s error handling path. Fix this by initializing fd to -1. [1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c49f@valentinobst.de/ Signed-off-by: John Hubbard <jhubbard@nvidia.com> --- tools/testing/selftests/cgroup/test_memcontrol.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)