Patch "perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP" has been added to the 4.12-stable tree

[<gregkh@linuxfoundation.org>]

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

    perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP

to the 4.12-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-intel-pt-ensure-ip-is-zero-when-state-is-intel_pt_state_no_ip.patch
and it can be found in the queue-4.12 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 ad7167a8cd174ba7d8c0d0ed8d8410521206d104 Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hunter@intel.com>
Date: Fri, 26 May 2017 11:17:05 +0300
Subject: perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP

From: Adrian Hunter <adrian.hunter@intel.com>

commit ad7167a8cd174ba7d8c0d0ed8d8410521206d104 upstream.

A value of zero is used to indicate that there is no IP. Ensure the
value is zero when the state is INTEL_PT_STATE_NO_IP.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-5-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 tools/perf/util/intel-pt-decoder/intel-pt-decoder.c |    1 +
 1 file changed, 1 insertion(+)

--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -2117,6 +2117,7 @@ const struct intel_pt_state *intel_pt_de
 			break;
 		case INTEL_PT_STATE_NO_IP:
 			decoder->last_ip = 0;
+			decoder->ip = 0;
 			/* Fall through */
 		case INTEL_PT_STATE_ERR_RESYNC:
 			err = intel_pt_sync_ip(decoder);


Patches currently in stable-queue which might be from adrian.hunter@intel.com are

queue-4.12/perf-intel-pt-ensure-ip-is-zero-when-state-is-intel_pt_state_no_ip.patch
queue-4.12/perf-intel-pt-ensure-never-to-set-last_ip-when-packet-count-is-zero.patch
queue-4.12/perf-intel-pt-use-fup-always-when-scanning-for-an-ip.patch
queue-4.12/perf-intel-pt-fix-last_ip-usage.patch
queue-4.12/perf-intel-pt-move-decoder-error-setting-into-one-condition.patch
queue-4.12/perf-intel-pt-clear-fup-flag-on-error.patch
queue-4.12/perf-intel-pt-improve-sample-timestamp.patch
queue-4.12/perf-intel-pt-fix-missing-stack-clear.patch