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[PATCH 4.12 020/196] perf intel-pt: Fix missing stack clear

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4.12-stable review patch.  If anyone has any objections, please let me know.

------------------

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

commit 12b7080609097753fd8198cc1daf589be3ec1cca upstream.

The return compression stack must be cleared whenever there is a PSB. Fix
one case where that was not happening.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-4-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
@@ -1932,6 +1932,7 @@ static int intel_pt_walk_to_ip(struct in
 			break;
 
 		case INTEL_PT_PSB:
+			intel_pt_clear_stack(&decoder->stack);
 			err = intel_pt_walk_psb(decoder);
 			if (err)
 				return err;

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[PATCH 4.12 000/196] 4.12.4-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 013/196] NFC: nfcmrvl: use nfc-device for firmware download Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 021/196] perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 016/196] nfc: Fix the sockaddr length sanitization in llcp_sock_connect Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 012/196] NFC: nfcmrvl: do not use device-managed resources Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 002/196] [media] ir-core: fix gcc-7 warning on bool arithmetic Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 020/196] perf intel-pt: Fix missing stack clear Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 018/196] perf intel-pt: Move decoder error setting into one condition Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 025/196] perf intel-pt: Clear FUP flag on error Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 014/196] NFC: nfcmrvl: fix firmware-management initialisation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 024/196] perf intel-pt: Use FUP always when scanning for an IP Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 022/196] perf intel-pt: Fix last_ip usage Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  [PATCH 4.12 023/196] perf intel-pt: Ensure never to set last_ip when packet count is zero Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:20 +0200
  Re: [PATCH 4.12 000/196] 4.12.4-stable review Guenter Roeck <linux@roeck-us.net> - 2017-07-26 05:00 +0200
    Re: [PATCH 4.12 000/196] 4.12.4-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-26 22:00 +0200
  Re: [PATCH 4.12 000/196] 4.12.4-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2017-07-26 16:30 +0200
    Re: [PATCH 4.12 000/196] 4.12.4-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-26 18:30 +0200

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