linux-kernel - Re: [syzbot] [wireless?] general protection fault in cfg80211_mlme

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Message-ID: <tencent_618DFA25908DA8126BDD965DF1991ACFE007@qq.com>
Date: Wed,  9 Apr 2025 17:20:47 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+00778a9a557a2a5e1a33@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [wireless?] general protection fault in cfg80211_mlme_deauth

#syz test: upstream 0af2f6be1b42

diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index cf998500a965..39bc68b3428a 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -226,6 +226,9 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev,
 		*treason = NL80211_TIMEOUT_ASSOC;
 		fallthrough;
 	case CFG80211_CONN_ASSOC_FAILED:
+		BUG_ON(!wdev->conn->bssid);
+		BUG_ON(!wdev->conn->params.bssid);
+		BUG_ON(!wdev->disconnect_bssid);
 		cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
 				     NULL, 0,
 				     WLAN_REASON_DEAUTH_LEAVING, false);