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%3Ba=su...
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@vger.kernel.org know about it.
From foo@baz Mon Apr 9 17:09:24 CEST 2018
From: Jiri Olsa jolsa@kernel.org Date: Tue, 9 Jan 2018 14:39:23 +0100 Subject: perf tools: Fix copyfile_offset update of output offset
From: Jiri Olsa jolsa@kernel.org
[ 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@kernel.org Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Andi Kleen ak@linux.intel.com Cc: David Ahern dsahern@gmail.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Fixes: 9c9f5a2f1944 ("perf tools: Introduce copyfile_offset() function") Link: http://lkml.kernel.org/r/20180109133923.25406-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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@kernel.org 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