This is a note to let you know that I've just added the patch titled
perf tools: Fix copyfile_offset update of output offset
to the 4.9-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-tools-fix-copyfile_offset-update-of-output-offset.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Apr 9 17:09:24 CEST 2018
From: Jiri Olsa <jolsa@xxxxxxxxxx>
Date: Tue, 9 Jan 2018 14:39:23 +0100
Subject: perf tools: Fix copyfile_offset update of output offset
From: Jiri Olsa <jolsa@xxxxxxxxxx>
[ Upstream commit fa1195ccc0af2d121abe0fe266a1caee8c265eea ]
We need to increase output offset in each iteration, not decrease it as
we currently do.
I guess we were lucky to finish in most cases in first iteration, so the
bug never showed. However it shows a lot when working with big (~4GB)
size data.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Fixes: 9c9f5a2f1944 ("perf tools: Introduce copyfile_offset() function")
Link: http://lkml.kernel.org/r/20180109133923.25406-1-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/perf/util/util.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -207,7 +207,7 @@ int copyfile_offset(int ifd, loff_t off_
size -= ret;
off_in += ret;
- off_out -= ret;
+ off_out += ret;
}
munmap(ptr, off_in + size);
Patches currently in stable-queue which might be from jolsa@xxxxxxxxxx are
queue-4.9/perf-report-fix-off-by-one-for-non-activation-frames.patch
queue-4.9/perf-trace-add-mmap-alias-for-s390.patch
queue-4.9/perf-tools-fix-copyfile_offset-update-of-output-offset.patch
queue-4.9/perf-core-correct-event-creation-with-perf_format_group.patch
queue-4.9/perf-tools-decompress-kernel-module-when-reading-dso-data.patch
queue-4.9/perf-tests-decompress-kernel-module-before-objdump.patch
queue-4.9/perf-header-set-proper-module-name-when-build-id-event-found.patch