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Subject[PATCH 4.12 025/196] perf intel-pt: Clear FUP flag on error
4.12-stable review patch.  If anyone has any objections, please let me know.


From: Adrian Hunter <>

commit 6a558f12dbe85437acbdec5e149ea07b5554eced upstream.

Sometimes a FUP packet is associated with a TSX transaction and a flag is
set to indicate that. Ensure that flag is cleared on any error condition
because at that point the decoder can no longer assume it is correct.

Signed-off-by: Adrian Hunter <>
Cc: Andi Kleen <>
Signed-off-by: Arnaldo Carvalho de Melo <>
Signed-off-by: Greg Kroah-Hartman <>

tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 2 ++
1 file changed, 2 insertions(+)

--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -1962,6 +1962,8 @@ static int intel_pt_sync_ip(struct intel
int err;

+ decoder->set_fup_tx_flags = false;
intel_pt_log("Scanning for full IP\n");
err = intel_pt_walk_to_ip(decoder);
if (err)

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