[dpdk-stable] [PATCH v1] examples/vm_power_manager: fix string null termination

[David Hunt]

coverity complains about a null-termination after a read,
so we terminate conditionally on whether idx is within
the buffer or at the end of the buffer.

Coverity issue: 337680
Fixes: a63504a90f ("examples/power: add JSON string handling")
CC: stable at dpdk.org
Signed-off-by: David Hunt <david.hunt at intel.com>
---
 examples/vm_power_manager/channel_monitor.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/vm_power_manager/channel_monitor.c b/examples/vm_power_manager/channel_monitor.c
index 971e4f2bc..711722fef 100644
--- a/examples/vm_power_manager/channel_monitor.c
+++ b/examples/vm_power_manager/channel_monitor.c
@@ -808,6 +808,7 @@ read_json_packet(struct channel_info *chan_info)
 		int indent = 0;
 		do {
 			n_bytes = read(chan_info->fd, &json_data[idx], 1);
+			json_data[idx + (idx < MAX_JSON_STRING_LEN - 1)] = '\0';
 			if (n_bytes == 0)
 				break;
 			if (json_data[idx] == '{')
-- 
2.17.1