[PATCH 2/3] perf_event: fix for procing raw event

Xiao Guangrong
2009-12-07T04:08:05Z

We use 'data.raw_data' parameter to call process_raw_event(), but
data.raw_data buffer not include data size. it can make perf tool
crash.

This bug is imported by:

Commit-ID: 180f95e29aa8782c019caa64ede2a28d8ab62564
Gitweb: http://git.kernel.org/tip/180f95e29aa8782c019caa64ede2a28d8ab62564
Author: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
AuthorDate: Sun, 6 Dec 2009 20:08:24 +0900
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sun, 6 Dec 2009 18:15:01 +0100

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
tools/perf/builtin-kmem.c | 11 ++++++++---
tools/perf/builtin-sched.c | 11 ++++++++---
2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index f218990..f84d7a3 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -289,13 +289,17 @@ static void process_free_event(struct raw_event_sample *raw,
}

static void
-process_raw_event(event_t *raw_event __used, void *more_data,
+process_raw_event(event_t *raw_event __used, u32 size, void *data,
int cpu, u64 timestamp, struct thread *thread)
{
- struct raw_event_sample *raw = more_data;
+ struct raw_event_sample *raw;
struct event *event;
int type;

+ raw = malloc_or_die(sizeof(*raw)+size);
+ raw->size = size;
+ memcpy(raw->data, data, size);
+
type = trace_parse_common_type(raw->data);
event = trace_find_event(type);

@@ -345,7 +349,8 @@ static int process_sample_event(event_t *event)

dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);

- process_raw_event(event, data.raw_data, data.cpu, data.time, thread);
+ process_raw_event(event, data.raw_size, data.raw_data, data.cpu,
+ data.time, thread);

return 0;
}
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 7481ebd..4655e16 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1570,13 +1570,17 @@ process_sched_migrate_task_event(struct raw_event_sample *raw,
}

static void
-process_raw_event(event_t *raw_event __used, void *more_data,
+process_raw_event(event_t *raw_event __used, u32 size, void *data,
int cpu, u64 timestamp, struct thread *thread)
{
- struct raw_event_sample *raw = more_data;
+ struct raw_event_sample *raw;
struct event *event;
int type;

+ raw = malloc_or_die(sizeof(*raw)+size);
+ raw->size = size;
+ memcpy(raw->data, data, size);
+
type = trace_parse_common_type(raw->data);
event = trace_find_event(type);

@@ -1629,7 +1633,8 @@ static int process_sample_event(event_t *event)
if (profile_cpu != -1 && profile_cpu != (int)data.cpu)
return 0;

- process_raw_event(event, data.raw_data, data.cpu, data.time, thread);
+ process_raw_event(event, data.raw_size, data.raw_data, data.cpu,
+ data.time, thread);

return 0;
}
--
1.6.1.2