diff mbox series

[05/21] trace-cmd library: Do not pass guests list to a buffer instance

Message ID 20210910134757.2863982-6-tz.stoyanov@gmail.com (mailing list archive)
State Superseded
Headers show
Series trace-cmd fixes and clean-ups | expand

Commit Message

Tzvetomir Stoyanov (VMware) Sept. 10, 2021, 1:47 p.m. UTC 
When a new trace buffer is read from the trace file, a new input handler
is duplicated from the top one. The pointer to the guests list should
not be duplicated, as it could lead to a memory corruption on
handler close.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 lib/trace-cmd/trace-input.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index ffe87e8a..e5c8c332 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -3966,6 +3966,7 @@  tracecmd_buffer_instance_handle(struct tracecmd_input *handle, int indx)
 	new_handle->nr_buffers = 0;
 	new_handle->buffers = NULL;
 	new_handle->version = NULL;
+	new_handle->guest = NULL;
 	new_handle->ref = 1;
 	if (handle->trace_clock) {
 		new_handle->trace_clock = strdup(handle->trace_clock);