diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index edb6ac17ceca..f2d4d571be39 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -5,6 +5,7 @@
  */
 #include <linux/module.h>
 #include <linux/netlink.h>
+#include <linux/preempt.h>
 #include <linux/qrtr.h>
 #include <linux/termios.h>	/* For TIOCINQ/OUTQ */
 #include <linux/spinlock.h>
@@ -722,17 +723,23 @@ static int qrtr_port_assign(struct qrtr_sock *ipc, int *port)
 	mutex_lock(&qrtr_port_lock);
 	if (!*port) {
 		min_port = QRTR_MIN_EPH_SOCKET;
+		preempt_disable();
 		rc = idr_alloc_u32(&qrtr_ports, ipc, &min_port, QRTR_MAX_EPH_SOCKET, GFP_ATOMIC);
+		preempt_enable();
 		if (!rc)
 			*port = min_port;
 	} else if (*port < QRTR_MIN_EPH_SOCKET && !capable(CAP_NET_ADMIN)) {
 		rc = -EACCES;
 	} else if (*port == QRTR_PORT_CTRL) {
 		min_port = 0;
+		preempt_disable();
 		rc = idr_alloc_u32(&qrtr_ports, ipc, &min_port, 0, GFP_ATOMIC);
+		preempt_enable();
 	} else {
 		min_port = *port;
+		preempt_disable();
 		rc = idr_alloc_u32(&qrtr_ports, ipc, &min_port, *port, GFP_ATOMIC);
+		preempt_enable();
 		if (!rc)
 			*port = min_port;
 	}