Potential conflict-of-interest: Submitting a paper to a conference with advisor (and co-author) as keynote speaker and on the advisory committee?
Maybe if the aim was to be completely pure, then this would be considered a conflict of interest.  However, it's unlikely that your advisor would have any role in the reviewing of papers, though I suppose it is theoretically possible he could put unfair pressure on the program committee.
In fact, it is quite common for conferences to allow authors to submit papers even when there is someone on the program committee with a genuine conflict of interest.  They put in place measures that try to keep program committee members from participating in decisions on those papers.  Generally, program committee members with a conflict of interest on a paper do not even see any discussion on that paper, much less participate in any decisions on them.  (In the old days, they left the room if that paper was discussed.  Now they simply do not have access to the reviews of that paper or the discussion thread concerning that papers.)
This became necessary because no one would serve on program committees if it meant none of their advisees could submit papers.  Many conferences have had to further relax this rule and allow program committee members to be non-presenting (non-first) co-authors of papers.