netdev - [PATCH net v2 1/2] i40e: fix potential memory leaks in i40e

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Date: Mon, 11 Sep 2023 13:27:14 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: Andrii Staikov <andrii.staikov@...el.com>,
	anthony.l.nguyen@...el.com,
	shannon.nelson@....com,
	Aleksandr Loktionov <aleksandr.loktionov@...el.com>,
	Simon Horman <horms@...nel.org>
Subject: [PATCH net v2 1/2] i40e: fix potential memory leaks in i40e_remove()

From: Andrii Staikov <andrii.staikov@...el.com>

Instead of freeing memory of a single VSI, make sure
the memory for all VSIs is cleared before releasing VSIs.
Add releasing of their resources in a loop with the iteration
number equal to the number of allocated VSIs.

Fixes: 41c445ff0f48 ("i40e: main driver core")
Signed-off-by: Andrii Staikov <andrii.staikov@...el.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index de7fd43dc11c..00ca2b88165c 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -16320,11 +16320,15 @@ static void i40e_remove(struct pci_dev *pdev)
 			i40e_switch_branch_release(pf->veb[i]);
 	}
 
-	/* Now we can shutdown the PF's VSI, just before we kill
+	/* Now we can shutdown the PF's VSIs, just before we kill
 	 * adminq and hmc.
 	 */
-	if (pf->vsi[pf->lan_vsi])
-		i40e_vsi_release(pf->vsi[pf->lan_vsi]);
+	for (i = pf->num_alloc_vsi; i--;)
+		if (pf->vsi[i]) {
+			i40e_vsi_close(pf->vsi[i]);
+			i40e_vsi_release(pf->vsi[i]);
+			pf->vsi[i] = NULL;
+		}
 
 	i40e_cloud_filter_exit(pf);
 
-- 
2.38.1