From: Mark Zhang <markz@xxxxxxxxxxxx>
Broken kernels (not-upstream) can provide wrong empty "comm" field.
It causes to segfault while printing in JSON format.
Fixes: 8ecac46a60ff ("rdma: Add QP resource tracking information")
Signed-off-by: Mark Zhang <markz@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
rdma/res.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/rdma/res.c b/rdma/res.c
index 97a7b964..6003006e 100644
--- a/rdma/res.c
+++ b/rdma/res.c
@@ -161,6 +161,9 @@ void print_comm(struct rd *rd, const char *str, struct nlattr **nla_line)
{
char tmp[18];
+ if (!str)
+ return;
+
if (rd->json_output) {
/* Don't beatify output in JSON format */
jsonw_string_field(rd->jw, "comm", str);
--
2.20.1
