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| author |   Namhyung Kim <namhyung.kim@lge.com> | 2013-09-30 17:19:48 +0900 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-10-04 15:17:46 -0300 |
| commit | b314e5cfd11fd78545ce6c2be42646254390c1aa (patch) | |
| tree | 9316fed404c26d55ae87ae6b68b4842e78c820b9 /tools/perf/util/session.c | |
| parent | perf tools: Fix installation of libexec components (diff) | |
| download | linux-dev-b314e5cfd11fd78545ce6c2be42646254390c1aa.tar.xz linux-dev-b314e5cfd11fd78545ce6c2be42646254390c1aa.zip | |
perf session: Fix infinite loop on invalid perf.data file
perf-record updates the header in the perf.data file at termination.
Without this update perf-report (and other processing built-ins) it
caused an infinite loop when perf report (or something like) called.
This is because the algorithm in __perf_session__process_events()
depends on the data_size which is read from file header. Use file size
directly instead in this case to do the best-effort processing.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: David Ahern <dsahern@gmail.com>
Tested-by: Sonny Rao <sonnyrao@chromium.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sonny Rao <sonnyrao@chromium.org>
Link: http://lkml.kernel.org/r/1380529188-27193-1-git-send-email-namhyung@kernel.org
Signed-off-by: David Ahern <dsahern@gmail.com>
[ Reworded warning as per Ingo Molnar suggestion, replaces 'perf.data'
with session->filename, to precisely identify the data file involved ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/session.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 37c4718f6be1..568b750c01f6 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1312,7 +1312,7 @@ int __perf_session__process_events(struct perf_session *session, file_offset = page_offset; head = data_offset - page_offset; - if (data_offset + data_size < file_size) + if (data_size && (data_offset + data_size < file_size)) file_size = data_offset + data_size; progress_next = file_size / 16; |