From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail115-69.sinamail.sina.com.cn (mail115-69.sinamail.sina.com.cn [218.30.115.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 40CC915F410 for ; Thu, 11 Jul 2024 11:10:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=218.30.115.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720696210; cv=none; b=PYIuujCxSJB4NxurXVz4JGNrT7f48srqZ/oBFsLSnT8Nba1bZhzA8P2t4TOU1KFGlSpa0WKnlthKVkl3TRp/0Zq2IBtDK3zPJlZOOv+SneS8YOxSuKjDGIB8Aw5qZ4mreQaI4oB5R0rKTnHdVTLQAzcsf86vxw3QVXNB4hM6GZc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720696210; c=relaxed/simple; bh=NTRu7/lRqX08hMMUgvUR2vyaRxokJ8enD5eSjzRWk8I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ozsJwKoJfukYFoTE2gtRX2e39DihaThkJ+j5tQMPu0BXQhPShJZhzElcXfnLV5sOCfFrfFQd+1vbtl22bNevzvT7/4CYijXSr9ffQhXlWb/ysPRH/xwLf1m5AViCR0HgV5lxLLTRYv4sgc845y2B/o8gUHlQClwdAhI2qL3dckc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; arc=none smtp.client-ip=218.30.115.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([113.88.49.89]) by sina.com (10.185.250.22) with ESMTP id 668FBD8000002AEF; Thu, 11 Jul 2024 19:09:55 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 1093397602675 X-SMAIL-UIID: 2FD65D3EE3B349B4ACC5ACD482700370-20240711-190955-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [bluetooth?] BUG: workqueue leaked atomic, lock or RCU: kworker/u9:NUM[NUM] Date: Thu, 11 Jul 2024 19:09:45 +0800 Message-Id: <20240711110945.1147-1-hdanton@sina.com> In-Reply-To: <0000000000002fcc8d061ced3d52@google.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, 10 Jul 2024 16:45:19 -0700 > syzbot has found a reproducer for the following issue on: > > HEAD commit: ef445d1539dd Merge remote-tracking branches 'origin/arm64-.. > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=176e2c7e980000 #syz test https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci --- x/net/bluetooth/l2cap_core.c +++ y/net/bluetooth/l2cap_core.c @@ -6774,6 +6774,7 @@ static void l2cap_conless_channel(struct bt_cb(skb)->l2cap.psm = psm; if (!chan->ops->recv(chan, skb)) { + l2cap_chan_unlock(chan); l2cap_chan_put(chan); return; } --