patch 'bus/auxiliary: fix crash in cleanup' has been queued to stable release 24.11.3

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 24.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/23/25. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/a16363c20fc190c47b89b47ecd19bab802393f38

Thanks.

Kevin

---
>From a16363c20fc190c47b89b47ecd19bab802393f38 Mon Sep 17 00:00:00 2001
From: Gregory Etelson <getelson at nvidia.com>
Date: Mon, 7 Jul 2025 13:06:48 +0300
Subject: [PATCH] bus/auxiliary: fix crash in cleanup

[ upstream commit f03c01f601b1b8d90f62c8a5acead72c04797d7a ]

DPDK auxiliary bus first creates a list of known devices in the
`auxiliary_bus.device_list` and then tries to attach a driver to each
device on that list.

If the driver attachment has failed, a device will remain on the list.

The device destruction did not validate driver existence and
crashed.

The patch validates auxiliary device driver before accessing
driver related resources.

Fixes: 1afce3086cf4 ("bus/auxiliary: introduce auxiliary bus")

Signed-off-by: Gregory Etelson <getelson at nvidia.com>
Acked-by: Dariusz Sosnowski <dsosnowski at nvidia.com>
---
 drivers/bus/auxiliary/auxiliary_common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/auxiliary/auxiliary_common.c b/drivers/bus/auxiliary/auxiliary_common.c
index e6cbc4d356..b19b226a43 100644
--- a/drivers/bus/auxiliary/auxiliary_common.c
+++ b/drivers/bus/auxiliary/auxiliary_common.c
@@ -161,4 +161,6 @@ rte_auxiliary_driver_remove_dev(struct rte_auxiliary_device *dev)
 
 	drv = dev->driver;
+	if (drv == NULL)
+		return 0;
 
 	AUXILIARY_LOG(DEBUG, "Driver %s remove auxiliary device %s on NUMA node %i",
-- 
2.50.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-07-18 20:29:16.416879934 +0100
+++ 0155-bus-auxiliary-fix-crash-in-cleanup.patch	2025-07-18 20:29:11.140913466 +0100
@@ -1 +1 @@
-From f03c01f601b1b8d90f62c8a5acead72c04797d7a Mon Sep 17 00:00:00 2001
+From a16363c20fc190c47b89b47ecd19bab802393f38 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit f03c01f601b1b8d90f62c8a5acead72c04797d7a ]
+
@@ -19 +20,0 @@
-Cc: stable at dpdk.org
@@ -28 +29 @@
-index 5c6c6b0ef2..ac766e283e 100644
+index e6cbc4d356..b19b226a43 100644
@@ -31 +32 @@
-@@ -164,4 +164,6 @@ rte_auxiliary_driver_remove_dev(struct rte_auxiliary_device *dev)
+@@ -161,4 +161,6 @@ rte_auxiliary_driver_remove_dev(struct rte_auxiliary_device *dev)