Patch "perf: Fix header.size for namespace events" has been added to the 4.14-stable tree

Patch "perf: Fix header.size for namespace events" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    perf: Fix header.size for namespace events

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     perf-fix-header.size-for-namespace-events.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Fri Feb 23 11:45:09 CET 2018
From: Jiri Olsa <jolsa@kernel.org>
Date: Wed, 9 Aug 2017 18:14:06 +0200
Subject: perf: Fix header.size for namespace events

From: Jiri Olsa <jolsa@kernel.org>


[ Upstream commit 34900ec5c9577cc1b0f22887ac7349f458ba8ac2 ]

Reset header size for namespace events, otherwise it only gets bigger in
ctx iterations.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Fixes: e422267322cd ("perf: Add PERF_RECORD_NAMESPACES to include namespaces related info")
Link: http://lkml.kernel.org/n/tip-nlo4gonz9d4guyb8153ukzt0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/events/core.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6719,6 +6719,7 @@ static void perf_event_namespaces_output
 	struct perf_namespaces_event *namespaces_event = data;
 	struct perf_output_handle handle;
 	struct perf_sample_data sample;
+	u16 header_size = namespaces_event->event_id.header.size;
 	int ret;
 
 	if (!perf_event_namespaces_match(event))
@@ -6729,7 +6730,7 @@ static void perf_event_namespaces_output
 	ret = perf_output_begin(&handle, event,
 				namespaces_event->event_id.header.size);
 	if (ret)
-		return;
+		goto out;
 
 	namespaces_event->event_id.pid = perf_event_pid(event,
 							namespaces_event->task);
@@ -6741,6 +6742,8 @@ static void perf_event_namespaces_output
 	perf_event__output_id_sample(event, &handle, &sample);
 
 	perf_output_end(&handle);
+out:
+	namespaces_event->event_id.header.size = header_size;
 }
 
 static void perf_fill_ns_link_info(struct perf_ns_link_info *ns_link_info,


Patches currently in stable-queue which might be from jolsa@kernel.org are

queue-4.14/perf-top-fix-window-dimensions-change-handling.patch
queue-4.14/perf-fix-header.size-for-namespace-events.patch
queue-4.14/perf-help-fix-a-bug-during-strstart-conversion.patch
queue-4.14/perf-record-fix-c-f-options-for-cpu-event-aliases.patch