This is a note to let you know that I've just added the patch titled
perf jevents: Fix suspicious code in fixregex()
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-jevents-fix-suspicious-code-in-fixregex.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4a127ea83732dc7b71f9b792c0bf6e8710e9a5b2
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
Date: Fri Sep 4 00:25:10 2020 +0900
perf jevents: Fix suspicious code in fixregex()
[ Upstream commit e62458e3940eb3dfb009481850e140fbee183b04 ]
The new string should have enough space for the original string and the
back slashes IMHO.
Fixes: fbc2844e84038ce3 ("perf vendor events: Use more flexible pattern matching for CPU identification for mapfile.csv")
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Reviewed-by: Ian Rogers <irogers@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: John Garry <john.garry@xxxxxxxxxx>
Cc: Kajol Jain <kjain@xxxxxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: William Cohen <wcohen@xxxxxxxxxx>
Link: http://lore.kernel.org/lkml/20200903152510.489233-1-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 99e3fd04a5cb3..d36ae65ae3330 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -137,7 +137,7 @@ static char *fixregex(char *s)
return s;
/* allocate space for a new string */
- fixed = (char *) malloc(len + 1);
+ fixed = (char *) malloc(len + esc_count + 1);
if (!fixed)
return NULL;
