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 6.1-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_type_data.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dfd0afbf151d85411b371e841f62b81ee5d1ca54 Mon Sep 17 00:00:00 2001
From: David Michael <fedora.dm0@xxxxxxxxx>
Date: Sun, 13 Nov 2022 15:52:17 -0500
Subject: libbpf: Fix uninitialized warning in btf_dump_dump_type_data
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From: David Michael <fedora.dm0@xxxxxxxxx>
commit dfd0afbf151d85411b371e841f62b81ee5d1ca54 upstream.
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: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/lib/bpf/btf_dump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -1963,7 +1963,7 @@ static int btf_dump_struct_data(struct b
{
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
Patches currently in stable-queue which might be from fedora.dm0@xxxxxxxxx are
queue-6.1/libbpf-fix-uninitialized-warning-in-btf_dump_dump_type_data.patch
