Messages in this thread Patch in this message | | | Date | Tue, 21 Jul 2020 21:16:47 -0400 | From | Steven Rostedt <> | Subject | [PATCH 19/23 v3] tools lib traceevent: Improve error handling of tep_plugin_add_option() API |
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From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
In case of memory error, ensure all allocated resources are freed. Do not append broken option in trace_plugin_options list.
Link: https://lore.kernel.org/r/CAM9d7cizjF+fbK7YzmsBDgrx__4YAOsmEq67D3sWET8FF+YdFA@mail.gmail.com Link: https://lore.kernel.org/linux-trace-devel/20200714103027.2477584-5-tz.stoyanov@gmail.com Link: https://lore.kernel.org/linux-trace-devel/20200716092014.2613403-5-tz.stoyanov@gmail.com
Suggested-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- tools/lib/traceevent/event-plugin.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c index f8d253a61970..6b84b9c4e6ba 100644 --- a/tools/lib/traceevent/event-plugin.c +++ b/tools/lib/traceevent/event-plugin.c @@ -361,23 +361,25 @@ int tep_plugin_add_option(const char *name, const char *val) if (!op) { op = malloc(sizeof(*op)); if (!op) - return -ENOMEM; + goto out_free; memset(op, 0, sizeof(*op)); - op->next = trace_plugin_options; - trace_plugin_options = op; - op->plugin = plugin; op->option = option_str; - if (val) { op->value = strdup(val); - if (!op->value) + if (!op->value) { + free(op); goto out_free; + } } + op->next = trace_plugin_options; + trace_plugin_options = op; } return process_option(plugin, option_str, val); - out_free: + +out_free: + free(plugin); free(option_str); return -ENOMEM; } -- 2.26.2
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