Files
linux/tools/perf/util
Arnaldo Carvalho de Melo 16977a9b7a perf header: Fix unchecked usage of strncpy()
commit 5192bde7d9 upstream.

The strncpy() function may leave the destination string buffer
unterminated, better use strlcpy() that we have a __weak fallback
implementation for systems without it.

This fixes this warning on an Alpine Linux Edge system with gcc 8.2:

  util/header.c: In function 'perf_event__synthesize_event_update_name':
  util/header.c:3625:2: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation]
    strncpy(ev->data, evsel->name, len);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  util/header.c:3618:15: note: length computed here
    size_t len = strlen(evsel->name);
                 ^~~~~~~~~~~~~~~~~~~

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Fixes: a6e5281780 ("perf tools: Add event_update event unit type")
Link: https://lkml.kernel.org/n/tip-wycz66iy8dl2z3yifgqf894p@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-10 09:55:36 +02:00
..
2015-05-27 12:21:43 -03:00
2016-07-18 19:42:47 -03:00
2016-06-28 10:54:56 -03:00
2016-07-12 15:19:47 -03:00
2016-07-12 15:19:47 -03:00
2016-10-03 11:24:13 -03:00
2015-08-21 11:34:10 -03:00
2016-10-03 11:24:13 -03:00
2016-06-15 10:35:27 -03:00
2016-06-15 10:35:27 -03:00
2016-07-12 15:19:55 -03:00
2016-07-12 15:19:55 -03:00
2016-10-03 11:24:13 -03:00
2017-07-15 12:16:12 +02:00
2016-09-29 11:17:01 -03:00
2016-10-03 11:24:13 -03:00
2016-03-31 10:52:24 -03:00
2016-03-23 12:32:31 -03:00
2015-05-29 12:43:44 -03:00