Update to 6.0.1-2

1 files changed, 94 insertions, 0 deletions

diff --git a/0012-wifi-cfg80211-update-hidden-BSSes-to-avoid-WARN_ON.patch b/0012-wifi-cfg80211-update-hidden-BSSes-to-avoid-WARN_ON.patch
new file mode 100644
index 000000000000..1442bba20f91
--- /dev/null
+++ b/0012-wifi-cfg80211-update-hidden-BSSes-to-avoid-WARN_ON.patch
@@ -0,0 +1,94 @@
+From 83f0bb0a1c9ad62891443a68a81a5f70abc3964c Mon Sep 17 00:00:00 2001
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Wed, 5 Oct 2022 23:11:43 +0200
+Subject: [PATCH 12/13] wifi: cfg80211: update hidden BSSes to avoid WARN_ON
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+commit c90b93b5b782891ebfda49d4e5da36632fefd5d1 upstream.
+
+When updating beacon elements in a non-transmitted BSS,
+also update the hidden sub-entries to the same beacon
+elements, so that a future update through other paths
+won't trigger a WARN_ON().
+
+The warning is triggered because the beacon elements in
+the hidden BSSes that are children of the BSS should
+always be the same as in the parent.
+
+Reported-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
+Tested-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
+Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/wireless/scan.c | 31 ++++++++++++++++++++-----------
+ 1 file changed, 20 insertions(+), 11 deletions(-)
+
+diff --git a/net/wireless/scan.c b/net/wireless/scan.c
+index a12c30ad9e5a..39fb9cc25cdc 100644
+--- a/net/wireless/scan.c
++++ b/net/wireless/scan.c
+@@ -1607,6 +1607,23 @@ struct cfg80211_non_tx_bss {
+ 	u8 bssid_index;
+ };
+ 
++static void cfg80211_update_hidden_bsses(struct cfg80211_internal_bss *known,
++					 const struct cfg80211_bss_ies *new_ies,
++					 const struct cfg80211_bss_ies *old_ies)
++{
++	struct cfg80211_internal_bss *bss;
++
++	/* Assign beacon IEs to all sub entries */
++	list_for_each_entry(bss, &known->hidden_list, hidden_list) {
++		const struct cfg80211_bss_ies *ies;
++
++		ies = rcu_access_pointer(bss->pub.beacon_ies);
++		WARN_ON(ies != old_ies);
++
++		rcu_assign_pointer(bss->pub.beacon_ies, new_ies);
++	}
++}
++
+ static bool
+ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
+ 			  struct cfg80211_internal_bss *known,
+@@ -1630,7 +1647,6 @@ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
+ 			kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
+ 	} else if (rcu_access_pointer(new->pub.beacon_ies)) {
+ 		const struct cfg80211_bss_ies *old;
+-		struct cfg80211_internal_bss *bss;
+ 
+ 		if (known->pub.hidden_beacon_bss &&
+ 		    !list_empty(&known->hidden_list)) {
+@@ -1658,16 +1674,7 @@ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
+ 		if (old == rcu_access_pointer(known->pub.ies))
+ 			rcu_assign_pointer(known->pub.ies, new->pub.beacon_ies);
+ 
+-		/* Assign beacon IEs to all sub entries */
+-		list_for_each_entry(bss, &known->hidden_list, hidden_list) {
+-			const struct cfg80211_bss_ies *ies;
+-
+-			ies = rcu_access_pointer(bss->pub.beacon_ies);
+-			WARN_ON(ies != old);
+-
+-			rcu_assign_pointer(bss->pub.beacon_ies,
+-					   new->pub.beacon_ies);
+-		}
++		cfg80211_update_hidden_bsses(known, new->pub.beacon_ies, old);
+ 
+ 		if (old)
+ 			kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
+@@ -2360,6 +2367,8 @@ cfg80211_update_notlisted_nontrans(struct wiphy *wiphy,
+ 	} else {
+ 		old = rcu_access_pointer(nontrans_bss->beacon_ies);
+ 		rcu_assign_pointer(nontrans_bss->beacon_ies, new_ies);
++		cfg80211_update_hidden_bsses(bss_from_pub(nontrans_bss),
++					     new_ies, old);
+ 		rcu_assign_pointer(nontrans_bss->ies, new_ies);
+ 		if (old)
+ 			kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
+-- 
+2.38.0
+