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| author | Louis Peens <louis.peens@netronome.com> | 2020-07-08 13:08:27 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-07-09 00:32:00 +0200 |
| commit | 625eb8e85e913273cd9441329a82b4e3496b30cd (patch) | |
| tree | 7a18403cd56909f3ae0f516acae4e000f57e0ce9 /tools/bpf | |
| parent | 5cfd607b49db2b7c05fccc2915a528d97bc8f17d (diff) | |
| download | linux-625eb8e85e913273cd9441329a82b4e3496b30cd.tar.gz linux-625eb8e85e913273cd9441329a82b4e3496b30cd.tar.bz2 linux-625eb8e85e913273cd9441329a82b4e3496b30cd.zip | |
bpf: Fix another bpftool segfault without skeleton code enabled
emit_obj_refs_json needs to added the same as with emit_obj_refs_plain
to prevent segfaults, similar to Commit "8ae4121bd89e bpf: Fix bpftool
without skeleton code enabled"). See the error below:
# ./bpftool -p prog
{
"error": "bpftool built without PID iterator support"
},[{
"id": 2,
"type": "cgroup_skb",
"tag": "7be49e3934a125ba",
"gpl_compatible": true,
"loaded_at": 1594052789,
"uid": 0,
"bytes_xlated": 296,
"jited": true,
"bytes_jited": 203,
"bytes_memlock": 4096,
"map_ids": [2,3
Segmentation fault (core dumped)
The same happens for ./bpftool -p map, as well as ./bpftool -j prog/map.
Fixes: d53dee3fe013 ("tools/bpftool: Show info for processes holding BPF map/prog/link/btf FDs")
Signed-off-by: Louis Peens <louis.peens@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200708110827.7673-1-louis.peens@netronome.com
Diffstat (limited to 'tools/bpf')
| -rw-r--r-- | tools/bpf/bpftool/pids.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/pids.c b/tools/bpf/bpftool/pids.c index 7d5416667c85..c0d23ce4a6f4 100644 --- a/tools/bpf/bpftool/pids.c +++ b/tools/bpf/bpftool/pids.c @@ -20,6 +20,7 @@ int build_obj_refs_table(struct obj_refs_table *table, enum bpf_obj_type type) } void delete_obj_refs_table(struct obj_refs_table *table) {} void emit_obj_refs_plain(struct obj_refs_table *table, __u32 id, const char *prefix) {} +void emit_obj_refs_json(struct obj_refs_table *table, __u32 id, json_writer_t *json_writer) {} #else /* BPFTOOL_WITHOUT_SKELETONS */ |