[PATCH 05/63] tools lib traceevent: Fix processing of dereferenced args in bprintk events

From: Arnaldo Carvalho de Melo
Date: Tue Dec 18 2018 - 17:08:38 EST

From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>

In the case that a bprintk event has a dereferenced pointer that is
stored as a string, and there's more values to process (more args), the
arg was not updated to point to the next arg after processing the
dereferenced pointer, and it screwed up what was to be displayed.

Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: linux-trace-devel@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 37db96bb49629 ("tools lib traceevent: Handle new pointer processing of bprint strings")
Link: http://lkml.kernel.org/r/20181210134522.3f71e2ca@xxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/lib/traceevent/event-parse.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index a5ed291b8a9f..69a96e39f0ab 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4973,6 +4973,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct tep_e

if (arg->type == TEP_PRINT_BSTRING) {
trace_seq_puts(s, arg->string.string);
+ arg = arg->next;