From: Florian Fainelli f.fainelli@gmail.com
[ Upstream commit 3045f42a64324d339125a8a1a1763bb9e1e08300 ]
GCC-11 warns about the possibly unitialized err variable in probe_map_create:
libbpf_probes.c: In function 'probe_map_create': libbpf_probes.c:361:38: error: 'err' may be used uninitialized in this function [-Werror=maybe-uninitialized] 361 | return fd < 0 && err == exp_err ? 1 : 0; | ~~~~^~~~~~~~~~
Fixes: 878d8def0603 ("libbpf: Rework feature-probing APIs") Signed-off-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: Andrii Nakryiko andrii@kernel.org Acked-by: Jiri Olsa jolsa@kernel.org Link: https://lore.kernel.org/bpf/20220801025109.1206633-1-f.fainelli@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/lib/bpf/libbpf_probes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c index 0b5398786bf3..6d495656f554 100644 --- a/tools/lib/bpf/libbpf_probes.c +++ b/tools/lib/bpf/libbpf_probes.c @@ -193,7 +193,7 @@ static int probe_map_create(enum bpf_map_type map_type) LIBBPF_OPTS(bpf_map_create_opts, opts); int key_size, value_size, max_entries; __u32 btf_key_type_id = 0, btf_value_type_id = 0; - int fd = -1, btf_fd = -1, fd_inner = -1, exp_err = 0, err; + int fd = -1, btf_fd = -1, fd_inner = -1, exp_err = 0, err = 0;
key_size = sizeof(__u32); value_size = sizeof(__u32);