linux-kernel - [PATCH 11/44] tools lib traceevent: Handle trace

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Date:   Tue,  2 Apr 2019 13:05:16 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jiri Olsa <jolsa@...hat.com>,
        Tzvetomir Stoyanov <tstoyanov@...are.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 11/44] tools lib traceevent: Handle trace_printk() "%px"

From: "Steven Rostedt (VMware)" <rostedt@...dmis.org>

With security updates, %p in the kernel is hashed to protect true kernel
locations. But trace_printk() is not allowed in production systems, and
when a pointer is used, there are many times that the actual address is
needed. "%px" produces the real address. But libtraceevent does not know how
to handle that extension. Add it.

Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Tzvetomir Stoyanov <tstoyanov@...are.com>
Link: http://lkml.kernel.org/r/20190401164342.837312153@goodmis.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 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 87494c7c619d..2ebb257ce7ba 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4338,6 +4338,7 @@ static struct tep_print_arg *make_bprint_args(char *fmt, void *data, int size, s
 					case 'S':
 					case 'f':
 					case 'F':
+					case 'x':
 						break;
 					default:
 						/*
-- 
2.20.1