diff options
| author | Viktor Malik <vmalik@redhat.com> | 2026-07-15 13:22:03 +0200 |
|---|---|---|
| committer | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-07-20 21:00:57 +0200 |
| commit | 5763790965eb3414148720f030b20fd5ccc438ca (patch) | |
| tree | e4dee12e9a686e78d3bf5be6e4ee21ae0f5ef48b /tools/testing | |
| parent | dcd164ec67f89e0db5ee025ee9e91280052eb737 (diff) | |
| download | linux-5763790965eb3414148720f030b20fd5ccc438ca.tar.gz linux-5763790965eb3414148720f030b20fd5ccc438ca.zip | |
selftests/bpf: Silence maybe-uninitialized compiler warning in libarena
When compiling BPF selftests with -O2, GCC reports a maybe-uninitialized
warning in libarena code:
In file included from /bpf-next/tools/testing/selftests/bpf/prog_tests/libarena_asan.c:11:
In function ‘libarena_asan_init’,
inlined from ‘run_test’ at /bpf-next/tools/testing/selftests/bpf/prog_tests/libarena_asan.c:59:8,
inlined from ‘test_libarena_asan’ at /bpf-next/tools/testing/selftests/bpf/prog_tests/libarena_asan.c:91:2:
/bpf-next/tools/testing/selftests/bpf/libarena/include/libarena/userspace.h:126:14: error: ‘globals_pages’ may be used uninitialized [-Werror=maybe-uninitialized]
126 | args = (struct asan_init_args){
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
127 | .arena_all_pages = arena_all_pages,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
128 | .arena_globals_pages = globals_pages,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
129 | };
| ~
/bpf-next/tools/testing/selftests/bpf/libarena/include/libarena/userspace.h: In function ‘test_libarena_asan’:
/bpf-next/tools/testing/selftests/bpf/libarena/include/libarena/userspace.h:118:13: note: ‘globals_pages’ was declared here
118 | u64 globals_pages;
| ^~~~~~~~~~~~~
Silence the warning by initializing globals_pages to 0.
Fixes: cfc00618b9df ("selftests/bpf: Add ASAN support for libarena selftests")
Signed-off-by: Viktor Malik <vmalik@redhat.com>
Link: https://lore.kernel.org/bpf/9f77a5c05c3c731ab2655fd66716ab9de4478b15.1784112948.git.vmalik@redhat.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/bpf/libarena/include/libarena/userspace.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/libarena/include/libarena/userspace.h b/tools/testing/selftests/bpf/libarena/include/libarena/userspace.h index fc27a4bcf5d7..b6676dd67bc0 100644 --- a/tools/testing/selftests/bpf/libarena/include/libarena/userspace.h +++ b/tools/testing/selftests/bpf/libarena/include/libarena/userspace.h @@ -115,7 +115,7 @@ static inline int libarena_asan_init(int arena_asan_init_fd, { LIBBPF_OPTS(bpf_test_run_opts, opts); struct asan_init_args args; - u64 globals_pages; + u64 globals_pages = 0; int ret; ret = libarena_get_globals_pages(arena_asan_init_fd, |