linux-stable/tools/bpf
Quentin Monnet e89ef634f8 bpftool: Avoid leaking the JSON writer prepared for program metadata
Bpftool creates a new JSON object for writing program metadata in plain
text mode, regardless of metadata being present or not. Then this writer
is freed if any metadata has been found and printed, but it leaks
otherwise. We cannot destroy the object unconditionally, because the
destructor prints an undesirable line break. Instead, make sure the
writer is created only after we have found program metadata to print.

Found with valgrind.

Fixes: aff52e685e ("bpftool: Support dumping metadata")
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211022094743.11052-1-quentin@isovalent.com
2021-10-22 16:44:56 -07:00
..
bpftool bpftool: Avoid leaking the JSON writer prepared for program metadata 2021-10-22 16:44:56 -07:00
resolve_btfids tools/resolve_btfids: Switch to new btf__type_cnt API 2021-10-22 16:09:14 -07:00
runqslower tools/runqslower: Install libbpf headers when building 2021-10-08 11:54:15 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Makefile tools: bpf: Fix error in 'make -C tools/ bpf_install' 2021-07-07 14:06:38 -07:00
bpf_asm.c docs: networking: convert filter.txt to ReST 2020-04-28 14:39:46 -07:00
bpf_dbg.c bpf: Simplify the calculation of variables 2021-03-04 19:24:53 -08:00
bpf_exp.l bpf: fix cbpf parser bug for octal numbers 2018-06-03 07:46:55 -07:00
bpf_exp.y tools, bpf_asm: Exit non-zero on errors 2021-02-26 22:53:50 +01:00
bpf_jit_disasm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 232 2019-06-19 17:09:06 +02:00