linux-kernel - [PATCH 06/35] perf auxtrace: Improve address filter error message when there is no DSO

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190307174433.28819-7-acme@kernel.org>
Date:   Thu,  7 Mar 2019 14:44:04 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH 06/35] perf auxtrace: Improve address filter error message when there is no DSO

From: Adrian Hunter <adrian.hunter@...el.com>

The message does not indicate the possibility that the symbol is not
found because the file does not exist.

Before:

  $ perf record -e intel_pt//u --filter 'filter strcmp / strcpy @ foo ' ls
  Symbol 'strcmp' not found.
  Note that symbols must be functions.
  Failed to parse address filter: 'filter strcmp / strcpy @ foo '
  Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>]
  Where multiple filters are separated by space or comma.

After:

  $ perf record -e intel_pt//u --filter 'filter strcmp / strcpy @ foo ' ls
  File 'foo' not found or has no symbols.
  Symbol 'strcmp' not found.
  Note that symbols must be functions.
  Failed to parse address filter: 'filter strcmp / strcpy @ foo '
  Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>]
  Where multiple filters are separated by space or comma.

Reported-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Link: https://lkml.kernel.org/n/tip-dvngzxd0jkplzw1ary69dilb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/auxtrace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index 267e54df511b..fb76b6b232d4 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1918,7 +1918,8 @@ static struct dso *load_dso(const char *name)
 	if (!map)
 		return NULL;

-	map__load(map);
+	if (map__load(map) < 0)
+		pr_err("File '%s' not found or has no symbols.\n", name);

 	dso = dso__get(map->dso);

-- 
2.20.1