From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Julia Lawall <Julia.Lawall@inria.fr>
Subject: [for-next][PATCH 03/12] tracing/probe: reverse arguments to list_add
Date: Mon, 01 Jun 2020 08:27:32 -0400 [thread overview]
Message-ID: <20200601122807.335170651@goodmis.org> (raw)
In-Reply-To: 20200601122729.727113609@goodmis.org
From: Julia Lawall <Julia.Lawall@inria.fr>
Elsewhere in the file, the function trace_kprobe_has_same_kprobe uses
a trace_probe_event.probes object as the second argument of
list_for_each_entry, ie as a list head, while the list_for_each_entry
iterates over the list fields of the trace_probe structures, making
them the list elements. So, exchange the arguments on the list_add
call to put the list head in the second argument.
Since both list_head structures were just initialized, this problem
did not cause any loss of information.
Link: https://lkml.kernel.org/r/1588879808-24488-1-git-send-email-Julia.Lawall@inria.fr
Fixes: 60d53e2c3b75 ("tracing/probe: Split trace_event related data from trace_probe")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/trace/trace_probe.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index ab8b6436d53f..b8a928e925c7 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -1006,7 +1006,7 @@ int trace_probe_init(struct trace_probe *tp, const char *event,
INIT_LIST_HEAD(&tp->event->class.fields);
INIT_LIST_HEAD(&tp->event->probes);
INIT_LIST_HEAD(&tp->list);
- list_add(&tp->event->probes, &tp->list);
+ list_add(&tp->list, &tp->event->probes);
call = trace_probe_event_call(tp);
call->class = &tp->event->class;
--
2.26.2
next prev parent reply other threads:[~2020-06-01 12:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-01 12:27 [for-next][PATCH 00/12] tracing: Updates for 5.8 (finally finished testing them) Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 01/12] ftrace: show debugging information when panic_on_warn set Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 02/12] tools/bootconfig: Add a summary of test cases and return error Steven Rostedt
2020-06-01 12:27 ` Steven Rostedt [this message]
2020-06-01 12:27 ` [for-next][PATCH 04/12] tracing: Check state.disabled in synth event trace functions Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 05/12] tracing: Add histogram-design document Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 06/12] tracing: Add hist_debug trace event files for histogram debugging Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 07/12] tracing/doc: Fix typos in histogram-design.rst Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 09/12] tracing: Move synthetic events to a separate file Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 10/12] selftests/ftrace: Distinguish between hist and synthetic event checks Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 11/12] ftrace,bug: Improve traceoff_on_warn Steven Rostedt
2020-06-01 12:27 ` [for-next][PATCH 12/12] tracing: Add a trace print when traceoff_on_warning is triggered Steven Rostedt
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