* BTF: build failure on 32bit on linux-next
@ 2021-05-21 16:20 Michal Suchánek
2021-05-22 0:46 ` Andrii Nakryiko
0 siblings, 1 reply; 4+ messages in thread
From: Michal Suchánek @ 2021-05-21 16:20 UTC (permalink / raw)
To: netdev
Cc: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko,
Martin KaFai Lau, Song Liu, Yonghong Song, John Fastabend,
KP Singh, Nathan Chancellor, Nick Desaulniers, linux-kernel,
netdev, bpf, clang-built-linux
Hello,
looks like the TODO prints added in 67234743736a6 are not 32bit clean.
Do you plan to implement this functionality or should they be fixed?
Thanks
Michal
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 69cd1a835ebd..70a26af8d01f 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -4565,7 +4565,7 @@ static int init_map_slots(struct bpf_object *obj, struct bpf_map *map)
targ_map = map->init_slots[i];
fd = bpf_map__fd(targ_map);
if (obj->gen_loader) {
- pr_warn("// TODO map_update_elem: idx %ld key %d value==map_idx %ld\n",
+ pr_warn("// TODO map_update_elem: idx %td key %d value==map_idx %td\n",
map - obj->maps, i, targ_map - obj->maps);
return -ENOTSUP;
} else {
@@ -6189,7 +6189,7 @@ static int bpf_core_apply_relo(struct bpf_program *prog,
return -EINVAL;
if (prog->obj->gen_loader) {
- pr_warn("// TODO core_relo: prog %ld insn[%d] %s %s kind %d\n",
+ pr_warn("// TODO core_relo: prog %td insn[%d] %s %s kind %d\n",
prog - prog->obj->programs, relo->insn_off / 8,
local_name, spec_str, relo->kind);
return -ENOTSUP;
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: BTF: build failure on 32bit on linux-next
2021-05-21 16:20 BTF: build failure on 32bit on linux-next Michal Suchánek
@ 2021-05-22 0:46 ` Andrii Nakryiko
2021-06-04 11:24 ` [PATCH bpf-next] libbpf: fix pr_warn type warnings on 32bit Michal Suchanek
0 siblings, 1 reply; 4+ messages in thread
From: Andrii Nakryiko @ 2021-05-22 0:46 UTC (permalink / raw)
To: Michal Suchánek
Cc: Networking, Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko,
Martin KaFai Lau, Song Liu, Yonghong Song, John Fastabend,
KP Singh, Nathan Chancellor, Nick Desaulniers, open list, bpf,
clang-built-linux
On Fri, May 21, 2021 at 9:20 AM Michal Suchánek <msuchanek@suse.de> wrote:
>
> Hello,
>
> looks like the TODO prints added in 67234743736a6 are not 32bit clean.
>
> Do you plan to implement this functionality or should they be fixed?
They should be fixed regardless. Can you please re-submit as a proper
patch to bpf@vger.kernel.org with [PATCH bpf-next] subj prefix?
>
> Thanks
>
> Michal
>
> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> index 69cd1a835ebd..70a26af8d01f 100644
> --- a/tools/lib/bpf/libbpf.c
> +++ b/tools/lib/bpf/libbpf.c
> @@ -4565,7 +4565,7 @@ static int init_map_slots(struct bpf_object *obj, struct bpf_map *map)
> targ_map = map->init_slots[i];
> fd = bpf_map__fd(targ_map);
> if (obj->gen_loader) {
> - pr_warn("// TODO map_update_elem: idx %ld key %d value==map_idx %ld\n",
> + pr_warn("// TODO map_update_elem: idx %td key %d value==map_idx %td\n",
> map - obj->maps, i, targ_map - obj->maps);
> return -ENOTSUP;
> } else {
> @@ -6189,7 +6189,7 @@ static int bpf_core_apply_relo(struct bpf_program *prog,
> return -EINVAL;
>
> if (prog->obj->gen_loader) {
> - pr_warn("// TODO core_relo: prog %ld insn[%d] %s %s kind %d\n",
> + pr_warn("// TODO core_relo: prog %td insn[%d] %s %s kind %d\n",
> prog - prog->obj->programs, relo->insn_off / 8,
> local_name, spec_str, relo->kind);
> return -ENOTSUP;
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH bpf-next] libbpf: fix pr_warn type warnings on 32bit
2021-05-22 0:46 ` Andrii Nakryiko
@ 2021-06-04 11:24 ` Michal Suchanek
2021-06-04 15:29 ` Yonghong Song
0 siblings, 1 reply; 4+ messages in thread
From: Michal Suchanek @ 2021-06-04 11:24 UTC (permalink / raw)
To: bpf
Cc: Michal Suchanek, Networking, Alexei Starovoitov, Daniel Borkmann,
Andrii Nakryiko, Martin KaFai Lau, Song Liu, Yonghong Song,
John Fastabend, KP Singh, Nathan Chancellor, Nick Desaulniers,
open list, clang-built-linux
The printed value is ptrdiff_t and is formatted wiht %ld. This works on
64bit but produces a warning on 32bit. Fix the format specifier to %td.
Fixes: 67234743736a ("libbpf: Generate loader program out of BPF ELF file.")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
tools/lib/bpf/libbpf.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index ef6600688f10..5e13c9d8d3f5 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -4584,7 +4584,7 @@ static int init_map_slots(struct bpf_object *obj, struct bpf_map *map)
targ_map = map->init_slots[i];
fd = bpf_map__fd(targ_map);
if (obj->gen_loader) {
- pr_warn("// TODO map_update_elem: idx %ld key %d value==map_idx %ld\n",
+ pr_warn("// TODO map_update_elem: idx %td key %d value==map_idx %td\n",
map - obj->maps, i, targ_map - obj->maps);
return -ENOTSUP;
} else {
@@ -6208,7 +6208,7 @@ static int bpf_core_apply_relo(struct bpf_program *prog,
return -EINVAL;
if (prog->obj->gen_loader) {
- pr_warn("// TODO core_relo: prog %ld insn[%d] %s %s kind %d\n",
+ pr_warn("// TODO core_relo: prog %td insn[%d] %s %s kind %d\n",
prog - prog->obj->programs, relo->insn_off / 8,
local_name, spec_str, relo->kind);
return -ENOTSUP;
--
2.26.2
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH bpf-next] libbpf: fix pr_warn type warnings on 32bit
2021-06-04 11:24 ` [PATCH bpf-next] libbpf: fix pr_warn type warnings on 32bit Michal Suchanek
@ 2021-06-04 15:29 ` Yonghong Song
0 siblings, 0 replies; 4+ messages in thread
From: Yonghong Song @ 2021-06-04 15:29 UTC (permalink / raw)
To: Michal Suchanek, bpf
Cc: Networking, Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko,
Martin KaFai Lau, Song Liu, John Fastabend, KP Singh,
Nathan Chancellor, Nick Desaulniers, open list,
clang-built-linux
On 6/4/21 4:24 AM, Michal Suchanek wrote:
> The printed value is ptrdiff_t and is formatted wiht %ld. This works on
> 64bit but produces a warning on 32bit. Fix the format specifier to %td.
>
> Fixes: 67234743736a ("libbpf: Generate loader program out of BPF ELF file.")
> Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Acked-by: Yonghong Song <yhs@fb.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-06-04 15:30 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-05-21 16:20 BTF: build failure on 32bit on linux-next Michal Suchánek
2021-05-22 0:46 ` Andrii Nakryiko
2021-06-04 11:24 ` [PATCH bpf-next] libbpf: fix pr_warn type warnings on 32bit Michal Suchanek
2021-06-04 15:29 ` Yonghong Song
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