Test case perftool-testsuite_report fails on s390 for some time
now. Root cause is a time out which is too tight for large s390 machines.
The time out value addr2line_timeout_ms is per default set to 1 second.
This is the maximum time the function read_addr2line_record() waits
for a reply from the forked off tool addr2line, which is started as a
child in interactive mode. It reads stdin (an address in hexadecimal)
and replies on stdout with function name, file name and line
number. This might take more than one second.

However one second is not always enough and the reply from addr2line
tool is not received. Function read_addr2line_record() fails and emits
a warning, which is not expected by the test case. It fails.

Output before:
 # perf test -F 133
 -- [ PASS ] -- perf_report :: setup :: prepare the perf.data file
 ==================
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.087 MB \
	/tmp/perftool-testsuite_report.FHz/perf_report/perf.data.1 \
	(207 samples) ]
 ==================
 -- [ PASS ] -- perf_report :: setup :: prepare the perf.data.1 file
 ## [ PASS ] ## perf_report :: setup SUMMARY
 -- [ SKIP ] -- perf_report :: test_basic :: help message :: testcase skipped
 Line did not match any pattern: "cmd__addr2line /usr/lib/debug/lib/modules/
 	6.19.0-20260205.rc8.git366.9845cf73f7db.300.fc43.s390x+next/
	vmlinux: could not read first record"
 Line did not match any pattern: "cmd__addr2line /usr/lib/debug/lib/modules/
	6.19.0-20260205.rc8.git366.9845cf73f7db.300.fc43.s390x+next/
	vmlinux: could not read first record"
 -- [ FAIL ] -- perf_report :: test_basic :: basic execution
	(output regexp parsing)
 ....
 133: perftool-testsuite_report      : FAILED!

Output after:
 # ./perf test -F 133
 -- [ PASS ] -- perf_report :: setup :: prepare the perf.data file
 ==================
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.087 MB \
	 /tmp/perftool-testsuite_report.Mlp/perf_report/perf.data.1
	 (188 samples) ]
 ==================
 -- [ PASS ] -- perf_report :: setup :: prepare the perf.data.1 file
 ## [ PASS ] ## perf_report :: setup SUMMARY
 -- [ SKIP ] -- perf_report :: test_basic :: help message :: testcase skipped
 -- [ PASS ] -- perf_report :: test_basic :: basic execution
 -- [ PASS ] -- perf_report :: test_basic :: number of samples
 -- [ PASS ] -- perf_report :: test_basic :: header
 -- [ PASS ] -- perf_report :: test_basic :: header timestamp
 -- [ PASS ] -- perf_report :: test_basic :: show CPU utilization
 -- [ PASS ] -- perf_report :: test_basic :: pid
 -- [ PASS ] -- perf_report :: test_basic :: non-existing symbol
 -- [ PASS ] -- perf_report :: test_basic :: symbol filter
 -- [ PASS ] -- perf_report :: test_basic :: latency header
 -- [ PASS ] -- perf_report :: test_basic :: default report for latency profile
 -- [ PASS ] -- perf_report :: test_basic :: latency report for latency profile
 -- [ PASS ] -- perf_report :: test_basic :: parallelism histogram
 ## [ PASS ] ## perf_report :: test_basic SUMMARY
 133: perftool-testsuite_report      : Ok
 #

Fixes: 257046a36750a ("perf srcline: Fallback between addr2line implementations")
Cc: Ian Rogers <irogers@google.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
---
 tools/perf/util/addr2line.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/addr2line.c b/tools/perf/util/addr2line.c
index 0f1499350d47..31c0391fffa3 100644
--- a/tools/perf/util/addr2line.c
+++ b/tools/perf/util/addr2line.c
@@ -18,8 +18,8 @@
 
 #define MAX_INLINE_NEST 1024
 
-/* If addr2line doesn't return data for 1 second then timeout. */
-int addr2line_timeout_ms = 1 * 1000;
+/* If addr2line doesn't return data for 5 seconds then timeout. */
+int addr2line_timeout_ms = 5 * 1000;
 
 static int filename_split(char *filename, unsigned int *line_nr)
 {
-- 
2.53.0

On Mon, Feb 09, 2026 at 04:32:56PM +0100, Thomas Richter wrote:
> Test case perftool-testsuite_report fails on s390 for some time
> now. Root cause is a time out which is too tight for large s390 machines.
> The time out value addr2line_timeout_ms is per default set to 1 second.
> This is the maximum time the function read_addr2line_record() waits
> for a reply from the forked off tool addr2line, which is started as a
> child in interactive mode. It reads stdin (an address in hexadecimal)
> and replies on stdout with function name, file name and line
> number. This might take more than one second.

<SNIP>

> +++ b/tools/perf/util/addr2line.c
> @@ -18,8 +18,8 @@
>  
>  #define MAX_INLINE_NEST 1024
>  
> -/* If addr2line doesn't return data for 1 second then timeout. */
> -int addr2line_timeout_ms = 1 * 1000;
> +/* If addr2line doesn't return data for 5 seconds then timeout. */
> +int addr2line_timeout_ms = 5 * 1000;
  
>  static int filename_split(char *filename, unsigned int *line_nr)
>  {

Thanks, applied to perf-tools-next,

- Arnaldo