--- a/cmds/info.c	2022-04-15 17:55:05.276817917 +0000
+++ b/cmds/info.c	2022-04-15 20:29:53.138225790 +0000
@@ -1226,7 +1226,7 @@
 
 	ret = open_info_file(opts, &handle);
 	if (ret < 0) {
-		pr_warn("cannot open record data: %s: %m\n", opts->dirname);
+		pr_warn("cannot open record data: %s: %m\n", opts->dirname, strerror(errno));
 		return -1;
 	}
 
--- a/cmds/report.c	2022-04-15 17:55:05.277817916 +0000
+++ b/cmds/report.c	2022-04-15 20:31:47.514057989 +0000
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <inttypes.h>
+#include <errno.h>
 
 #include "uftrace.h"
 #include "utils/utils.h"
@@ -441,7 +442,7 @@
 	report_calc_avg(&base_tree);
 
 	if (open_data_file(&dummy_opts, &data.handle) < 0) {
-		pr_warn("cannot open record data: %s: %m\n", opts->diff);
+		pr_warn("cannot open record data: %s: %m\n", opts->diff, strerror(errno));
 		goto out;
 	}
 
@@ -547,7 +548,7 @@
 
 	ret = open_data_file(opts, &handle);
 	if (ret < 0) {
-		pr_warn("cannot open record data: %s: %m\n", opts->dirname);
+		pr_warn("cannot open record data: %s: %m\n", opts->dirname, strerror(errno));
 		return -1;
 	}
 
--- a/cmds/dump.c	2022-04-15 17:55:05.276817917 +0000
+++ b/cmds/dump.c	2022-04-15 20:33:03.603946364 +0000
@@ -4,6 +4,7 @@
 #include <inttypes.h>
 #include <time.h>
 #include <sys/stat.h>
+#include <errno.h>
 
 #include "uftrace.h"
 #include "version.h"
@@ -1644,7 +1645,7 @@
 
 	ret = open_data_file(opts, &handle);
 	if (ret < 0) {
-		pr_warn("cannot open record data: %s: %m\n", opts->dirname);
+		pr_warn("cannot open record data: %s: %m\n", opts->dirname, strerror(errno));
 		return -1;
 	}
 
--- a/cmds/replay.c	2022-04-15 17:55:05.277817916 +0000
+++ b/cmds/replay.c	2022-04-15 20:33:53.498873171 +0000
@@ -3,6 +3,7 @@
 #include <signal.h>
 #include <inttypes.h>
 #include <stdio_ext.h>
+#include <errno.h>
 
 #include "uftrace.h"
 #include "utils/utils.h"
@@ -1221,7 +1222,7 @@
 
 	ret = open_data_file(opts, &handle);
 	if (ret < 0) {
-		pr_warn("cannot open record data: %s: %m\n", opts->dirname);
+		pr_warn("cannot open record data: %s: %m\n", opts->dirname, strerror(errno));
 		return -1;
 	}