6.6-stable review patch. If anyone has any objections, please let me know.
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From: Yuan Chen chenyuan@kylinos.cn
[ Upstream commit 85cd83fed8267cde0dd1cea719808aad95ae4de7 ]
When using `bpftool --version -j/-p`, the JSON writer object created in do_version() was not properly destroyed after use. This caused a memory leak each time the version command was executed with JSON output.
Fix: 004b45c0e51a (tools: bpftool: provide JSON output for all possible commands)
Suggested-by: Quentin Monnet qmo@kernel.org Signed-off-by: Yuan Chen chenyuan@kylinos.cn Signed-off-by: Andrii Nakryiko andrii@kernel.org Reviewed-by: Quentin Monnet qmo@kernel.org Link: https://lore.kernel.org/bpf/20250617132442.9998-1-chenyuan_fl@163.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/bpf/bpftool/main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index 08d0ac543c67..a0536528dfde 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -534,9 +534,9 @@ int main(int argc, char **argv) usage();
if (version_requested) - return do_version(argc, argv); - - ret = cmd_select(commands, argc, argv, do_help); + ret = do_version(argc, argv); + else + ret = cmd_select(commands, argc, argv, do_help);
if (json_output) jsonw_destroy(&json_wtr);