From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0FC74EB64DD for ; Wed, 5 Jul 2023 06:07:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WitbeoGret6XT21921cN0fQeWVNcw8qQMyRVcdyKNBs=; b=aa05MBArS8Q4TM j97vKKozDts8n2AUb/fYq3rCLAkvXVyfiof8egAGT92Mc1bAUWGjAmWAx8QIbG6n3cDeD1WZ3Bnci b9ikz4R4j/al9UzeNXpBNELNYONl/Xydt2137WtQ50LrQENXeX3JF5zKc1v+ql0YhWD5SVBRATBOf QmC23PEFfkNfip5xjMpKY17nmldo+r86+5j5ps2+bUeYslfeRUnW7VzINGrrHxpe0E4fk4FiwExat KxFazopbPsbjO71FDENI+idnJzry9wM/E5LQWaTepHEUndUYEYbtzl5CqQkcRLtuf5Moc87UCU2Yd qziOxKo7h/BWVHvzas7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qGvet-00Erdy-0D; Wed, 05 Jul 2023 06:06:35 +0000 Received: from relay1-d.mail.gandi.net ([217.70.183.193]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qGvep-00Erd4-2L; Wed, 05 Jul 2023 06:06:33 +0000 X-GND-Sasl: herve.codina@bootlin.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1688537186; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=O0C66mVI1nkOIpn+KxsHOUvDqjbprbMxbnSqsj7WItk=; b=HMzIJ0wIJQCx++SRoTVQ8bottUooWGrkC8U7ZbdBDWg4B+tUqyPdud6JH9otkTYx2SY5fR t1NQSyOEzJPRQQZvqLzSHQMzV+R/uoM4OOVbiiKYOkZ/nGpqrrmZVCcj4fbt4TjJ1AnkvT IrqpE/3YkiwUoF1JTiKaeXmwNTXWWbT0bIbEihf02ULF0r0KLhbj264ppLD/bndnr2ZLTR M4k/4p2K+3qLySn9vZ8R2zqGUElPkVybtLGVxq6YpF1ppekDo8CePFROKUoz5/SgrN3VnL pCnV4fnpHLFG4+CF5XYs+C8FMJdP4mepqUQJL1K5TwJf8dW+aTf7pPrk9vPIyw== X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com Received: by mail.gandi.net (Postfix) with ESMTPSA id C88C824000A; Wed, 5 Jul 2023 06:06:25 +0000 (UTC) Date: Wed, 5 Jul 2023 08:06:25 +0200 From: Herve Codina To: Yu Hao Cc: chunfeng.yun@mediatek.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel Subject: Re: [PATCH] usb: mtu3: Fix possible use-before-initialization bug Message-ID: <20230705080625.02b2bac5@bootlin.com> In-Reply-To: References: Organization: Bootlin X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230704_230632_062908_F90370ED X-CRM114-Status: GOOD ( 19.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgWXUsCgpPbiBUdWUsIDQgSnVsIDIwMjMgMTY6MjU6NTAgLTA3MDAKWXUgSGFvIDx5aGFvMDE2 QHVjci5lZHU+IHdyb3RlOgoKPiBUaGUgc3RydWN0IHVzYl9jdHJscmVxdWVzdCBzZXR1cCBzaG91 bGQgYmUgaW5pdGlhbGl6ZWQgaW4gdGhlIGZ1bmN0aW9uCj4gZXAwX3JlYWRfc2V0dXAobXR1LCAm c2V0dXApLiBIb3dldmVyLCBpbnNpZGUgdGhhdCBmdW5jdGlvbiwKPiB0aGUgdmFyaWFibGUgY291 bnQgY291bGQgYmUgMCBhbmQgdGhlIHN0cnVjdCB1c2JfY3RybHJlcXVlc3Qgc2V0dXAKPiBpcyBu b3QgaW5pdGlhbGl6ZWQuIEJ1dCB0aGVyZSBpcyBhIHJlYWQgZm9yIHNldHVwLmJSZXF1ZXN0VHlw ZS4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBZdSBIYW8gPHloYW8wMTZAdWNyLmVkdT4KPiAtLS0KPiAg ZHJpdmVycy91c2IvbXR1My9tdHUzX2dhZGdldF9lcDAuYyB8IDIgKy0KPiAgMSBmaWxlIGNoYW5n ZWQsIDEgaW5zZXJ0aW9uKCspLCAxIGRlbGV0aW9uKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvdXNiL210dTMvbXR1M19nYWRnZXRfZXAwLmMKPiBiL2RyaXZlcnMvdXNiL210dTMvbXR1M19n YWRnZXRfZXAwLmMKPiBpbmRleCBlNGZkMWJiMTRhNTUuLjY3MDM0ZmE1MTVkMCAxMDA2NDQKPiAt LS0gYS9kcml2ZXJzL3VzYi9tdHUzL210dTNfZ2FkZ2V0X2VwMC5jCj4gKysrIGIvZHJpdmVycy91 c2IvbXR1My9tdHUzX2dhZGdldF9lcDAuYwo+IEBAIC02MzgsNyArNjM4LDcgQEAgc3RhdGljIGlu dCBlcDBfaGFuZGxlX3NldHVwKHN0cnVjdCBtdHUzICptdHUpCj4gIF9fcmVsZWFzZXMobXR1LT5s b2NrKQo+ICBfX2FjcXVpcmVzKG10dS0+bG9jaykKPiAgewo+IC0gICBzdHJ1Y3QgdXNiX2N0cmxy ZXF1ZXN0IHNldHVwOwo+ICsgICBzdHJ1Y3QgdXNiX2N0cmxyZXF1ZXN0IHNldHVwID0ge307Cj4g ICAgIHN0cnVjdCBtdHUzX3JlcXVlc3QgKm1yZXE7Cj4gICAgIGludCBoYW5kbGVkID0gMDsKPiAK Ckxvb2tzIHN0cmFuZ2UgdG8gbWUgYmVjYXVzZSwgaWYgZXAwX3JlYWRfc2V0dXAoKSBjYW5ub3Qg cmVhZCB0aGUgc2V0dXAgZGF0YQp3aHkgZG9uJ3Qgd2Ugc2ltcGx5IGFib3J0IHRoZSBvcGVyYXRp b24gPwoKV2l0aCBzZXR1cCA9IHt9LCB0aGUgZm9sbG93aW5nIHRlc3QgaXMgdHJ1ZToKICBpZiAo KHNldHVwLmJSZXF1ZXN0VHlwZSAmIFVTQl9UWVBFX01BU0spID09IFVTQl9UWVBFX1NUQU5EQVJE KQoJaGFuZGxlZCA9IGhhbmRsZV9zdGFuZGFyZF9yZXF1ZXN0KG10dSwgJnNldHVwKTsKCmhhbmRs ZV9zdGFuZGFyZF9yZXF1ZXN0KCkgaXMgY2FsbGVkIGFuZCBzdXBwb3NlcyBhbiBVU0JfUkVRX0dF VF9TVEFUVVMKKDB4MDApIHJlcXVlc3Q6CiAgIGNhc2UgVVNCX1JFUV9HRVRfU1RBVFVTOgoJaGFu ZGxlZCA9IGVwMF9nZXRfc3RhdHVzKG10dSwgc2V0dXApOwoJYnJlYWs7CgpUaGVuIGVwMF9nZXRf c3RhdHVzKCkgc3VwcG9zZXMgVVNCX1JFQ0lQX0RFVklDRSAoMHgwMCkgYW5kIHBlcmZvcm1zIHNv bWUKb3BlcmF0aW9uIHNlbmRpbmcgdGhlIGRhdGEgcmVsYXRlZCB0byB0aGUgR0VUX1NUQVRVUy4K CkFsbCBvZiB0aGVzZSBhcmUgbm90IGNvcnJlY3QgYXMgdGhlIHNldHVwIGRhdGEgdGhhdCB0cmln Z2VyZWQgdGhpcyBzZXF1ZW5jZQp3YXMgbmV2ZXIgcmVjZWl2ZWQuCkFib3J0aW5nIHRoZSBvcGVy YXRpb24gaWYgZXAwX3JlYWRfc2V0dXAoKSBjYW5ub3QgcmVhZCB0aGUgc2V0dXAgZGF0YSBzZWVt cwpiZXR0ZXIgdG8gbWUuCgpCZXN0IHJlZ2FyZHMsCkhlcnbDqQoKLS0gCkhlcnbDqSBDb2RpbmEs IEJvb3RsaW4KRW1iZWRkZWQgTGludXggYW5kIEtlcm5lbCBlbmdpbmVlcmluZwpodHRwczovL2Jv b3RsaW4uY29tCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmlu ZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9s aW51eC1hcm0ta2VybmVsCg==