From: Steven Rostedt The second argument in the strtok_r is not to be used generically and can have different implementations. Currently the function parsing of the perf trace code uses the second argument to copy data from. This can crash the tool or just have unpredictable results. The correct solution is to use strsep which has a defined result. I also added a check to see if the result was correct, and will break out of the loop in case it fails to parse as expected. Reported-by: Arnaldo Carvalho de Melo Cc: Peter Zijlstra Cc: Frederic Weisbecker Cc: Ingo Molnar LKML-Reference: <1255971369-11368-1-git-send-email-acme@redhat.com> Signed-off-by: Steven Rostedt --- tools/perf/util/trace-event-parse.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index 4b61b49..eae5605 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -286,16 +286,19 @@ void parse_ftrace_printk(char *file, unsigned int size __unused) char *line; char *next = NULL; char *addr_str; - char *fmt; int i; line = strtok_r(file, "\n", &next); while (line) { + addr_str = strsep(&line, ":"); + if (!line) { + warning("error parsing print strings"); + break; + } item = malloc_or_die(sizeof(*item)); - addr_str = strtok_r(line, ":", &fmt); item->addr = strtoull(addr_str, NULL, 16); /* fmt still has a space, skip it */ - item->printk = strdup(fmt+1); + item->printk = strdup(line+1); item->next = list; list = item; line = strtok_r(NULL, "\n", &next); -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/