This is a note to let you know that I've just added the patch titled
libbpf: Fix uninitialized warning in btf_dump_dump_type_data
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
libbpf-fix-uninitialized-warning-in-btf_dump_dump_ty.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1381914eb1f3251adb41d3908b609dbb39c42c7b
Author: David Michael <fedora.dm0@xxxxxxxxx>
Date: Sun Nov 13 15:52:17 2022 -0500
libbpf: Fix uninitialized warning in btf_dump_dump_type_data
[ Upstream commit dfd0afbf151d85411b371e841f62b81ee5d1ca54 ]
GCC 11.3.0 fails to compile btf_dump.c due to the following error,
which seems to originate in btf_dump_struct_data where the returned
value would be uninitialized if btf_vlen returns zero.
btf_dump.c: In function ‘btf_dump_dump_type_data’:
btf_dump.c:2363:12: error: ‘err’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
2363 | if (err < 0)
| ^
Fixes: 920d16af9b42 ("libbpf: BTF dumper support for typed data")
Signed-off-by: David Michael <fedora.dm0@xxxxxxxxx>
Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Acked-by: Stanislav Fomichev <sdf@xxxxxxxxxx>
Acked-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
Link: https://lore.kernel.org/bpf/87zgcu60hq.fsf@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index 9bcd75dc12cc..f620911ad3bb 100644
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -1915,7 +1915,7 @@ static int btf_dump_struct_data(struct btf_dump *d,
{
const struct btf_member *m = btf_members(t);
__u16 n = btf_vlen(t);
- int i, err;
+ int i, err = 0;
/* note that we increment depth before calling btf_dump_print() below;
* this is intentional. btf_dump_data_newline() will not print a
