[lttng-dev] [PATCH lttng-tools] Fix: use newly created event filter for condition check

[mathieu.desnoyers@efficios.com (Mathieu Desnoyers)]

----- On Sep 24, 2019, at 10:53 AM, Jonathan Rajotte jonathan.rajotte-julien at efficios.com wrote:

> 4c5e3185d75ffe90b04107744693964d9051fb6b introduced a regression while
> fixing the filter and filter_expression ownership.

What is this commit ? I'm having trouble finding it. Can you double-check and
provide the commit Subject as well ?

Typically:

commit 1234567890ab "Commit subject" ....

Thanks,

Mathieu

> 
> Setting the "filter" object to NULL prevents the call to
> add_filter_app_ctx when needed.
> 
> We use the filter from the newly created event to
> perform the check and the call to add_filter_app_ctx.
> 
> Fixes coverity #1399733
> 
> Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien at efficios.com>
> ---
> src/bin/lttng-sessiond/event.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/src/bin/lttng-sessiond/event.c b/src/bin/lttng-sessiond/event.c
> index f32db4429..a8b7646da 100644
> --- a/src/bin/lttng-sessiond/event.c
> +++ b/src/bin/lttng-sessiond/event.c
> @@ -513,8 +513,9 @@ int event_agent_enable(struct ltt_ust_session *usess,
> 		created = 1;
> 	}
> 
> -	if (created && filter) {
> -		ret = add_filter_app_ctx(filter, filter_expression, agt);
> +	if (created && aevent->filter) {
> +		ret = add_filter_app_ctx(
> +				aevent->filter, aevent->filter_expression, agt);
> 		if (ret != LTTNG_OK) {
> 			goto error;
> 		}
> --
> 2.17.1
> 
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com