svn commit: r368660 - stable/12/sys/dev/e1000

[Mitchell Horne]

Author: mhorne
Date: Tue Dec 15 14:54:36 2020
New Revision: 368660
URL: https://svnweb.freebsd.org/changeset/base/368660

Log:
  MFC r368281:
  em: fix a null de-reference in em_free_pci_resources

Modified:
  stable/12/sys/dev/e1000/if_em.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/dev/e1000/if_em.c
==============================================================================
--- stable/12/sys/dev/e1000/if_em.c	Tue Dec 15 12:05:07 2020	(r368659)
+++ stable/12/sys/dev/e1000/if_em.c	Tue Dec 15 14:54:36 2020	(r368660)
@@ -2217,8 +2217,10 @@ em_free_pci_resources(if_ctx_t ctx)
 	if (adapter->intr_type == IFLIB_INTR_MSIX)
 		iflib_irq_free(ctx, &adapter->irq);
 
-	for (int i = 0; i < adapter->rx_num_queues; i++, que++) {
-		iflib_irq_free(ctx, &que->que_irq);
+	if (que != NULL) {
+		for (int i = 0; i < adapter->rx_num_queues; i++, que++) {
+			iflib_irq_free(ctx, &que->que_irq);
+		}
 	}
 
 	if (adapter->memory != NULL) {