Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 10/15] perf tools: Fix out-of-bound access to struct perf_session | Date | Fri, 23 Dec 2011 19:53:13 -0200 |
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From: Robert Richter <robert.richter@amd.com>
If filename is NULL there is an out-of-bound access to struct perf_session if it would be used with perf_session__open(). Shouldn't actually happen in current implementation as filename is always !NULL. Fixing this by always null-terminating filename.
Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1323248577-11268-3-git-send-email-robert.richter@amd.com Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/util/session.c | 2 +- tools/perf/util/session.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index d9318d8..ea17dfb 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -107,7 +107,7 @@ struct perf_session *perf_session__new(const char *filename, int mode, bool force, bool repipe, struct perf_tool *tool) { - size_t len = filename ? strlen(filename) + 1 : 0; + size_t len = filename ? strlen(filename) : 0; struct perf_session *self = zalloc(sizeof(*self) + len); if (self == NULL) diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index fb69612..37bc383 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -50,7 +50,7 @@ struct perf_session { int cwdlen; char *cwd; struct ordered_samples ordered_samples; - char filename[0]; + char filename[1]; }; struct perf_tool; -- 1.7.8.rc0.35.gee6df
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