LU-16684 utils: reset buf_len in print_out_devices()

so that print_out_devices() doesn't hit false buffer overflow
leading to missing devices in lctl device_list output.

Fixes: ba0d5ffc1c ("LU-9680 utils: new llapi_param_display_value().")
Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Change-Id: Ia0ebbd0150651d7c631348201c26ea8b3d1ff704
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50475
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Mikhail Pershin <mpershin@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>

diff --git a/lustre/utils/liblustreapi_param.c b/lustre/utils/liblustreapi_param.c
index a1f52ca..a027850 100644 (file)
--- a/lustre/utils/liblustreapi_param.c
+++ b/lustre/utils/liblustreapi_param.c
@@ -449,6 +449,7 @@ static int print_out_devices(yaml_parser_t *reply, enum lctl_param_flags flags)
                        }
                        bzero(buf, sizeof(buf));
                        tmp = buf;
+                       buf_len = sizeof(buf);
                }
 
                if (event.type == YAML_SCALAR_EVENT) {