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Accessing buf->stop_te->stop buf->stop_te->intr might occer segmentation fault. Same as buf->intr_te. Signed-off-by: Yang Guang --- arch/x86/events/intel/pt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c index 7f406c14715f..ec1c644fc83f 100644 --- a/arch/x86/events/intel/pt.c +++ b/arch/x86/events/intel/pt.c @@ -1118,9 +1118,12 @@ static int pt_buffer_reset_markers(struct pt_buffer *buf, buf->intr_te = pt_topa_prev_entry(buf, buf->intr_te); } - buf->stop_te->stop = 1; - buf->stop_te->intr = 1; - buf->intr_te->intr = 1; + if (buf->stop_te) { + buf->stop_te->stop = 1; + buf->stop_te->intr = 1; + } + if (buf->intr_te) + buf->intr_te->intr = 1; return 0; } -- 2.25.1