diff --git a/sys/dev/sound/pcm/dsp.c b/sys/dev/sound/pcm/dsp.c
--- a/sys/dev/sound/pcm/dsp.c
+++ b/sys/dev/sound/pcm/dsp.c
@@ -2047,6 +2047,7 @@
 	ai->dev = unit;
 	snprintf(ai->name, sizeof(ai->name), "pcm%d (unavailable)", unit);
 	ai->pid = -1;
+	strlcpy(ai->cmd, CHN_COMM_UNUSED, sizeof(ai->cmd));
 	ai->card_number = unit;
 	ai->port_number = unit;
 	ai->mixer_dev = -1;
@@ -2132,6 +2133,7 @@
 	ai->dev = unit;
 	strlcpy(ai->name, device_get_desc(d->dev), sizeof(ai->name));
 	ai->pid = -1;
+	strlcpy(ai->cmd, CHN_COMM_UNKNOWN, sizeof(ai->cmd));
 	ai->card_number = -1;
 	ai->port_number = -1;
 	ai->mixer_dev = (d->mixer_dev != NULL) ? unit : -1;
@@ -2317,14 +2319,8 @@
 			else
 				ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ;
 
-			/**
-			 * @note
-			 * @c cmd - OSSv4 docs: "Only supported under Linux at
-			 *    this moment." Cop-out, I know, but I'll save
-			 *    running around in the process table for later.
-			 *    Is there a risk of leaking information?
-			 */
 			ai->pid = ch->pid;
+			strlcpy(ai->cmd, ch->comm, sizeof(ai->cmd));
 
 			/*
 			 * These flags stolen from SNDCTL_DSP_GETCAPS handler.