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Thu, 16 Jul 2020 14:41:20 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jul 2020 14:41:20 +0800 From: Macpaul Lin To: Felipe Balbi , Greg Kroah-Hartman , Matthias Brugger , , , , CC: Mediatek WSD Upstream , Macpaul Lin , Macpaul Lin , Eddie Hung , Subject: [PATCH] usb: gadget: configfs: Fix use-after-free issue with udc_name Date: Thu, 16 Jul 2020 14:41:06 +0800 Message-ID: <1594881666-8843-1-git-send-email-macpaul.lin@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Content-Transfer-Encoding: base64 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org VGhlcmUgaXMgYSB1c2UtYWZ0ZXItZnJlZSBpc3N1ZSwgaWYgYWNjZXNzIHVkY19uYW1lDQppbiBm dW5jdGlvbiBnYWRnZXRfZGV2X2Rlc2NfVURDX3N0b3JlIGFmdGVyIGFub3RoZXIgY29udGV4dA0K ZnJlZSB1ZGNfbmFtZSBpbiBmdW5jdGlvbiB1bnJlZ2lzdGVyX2dhZGdldC4NCg0KQ29udGV4IDE6 DQpnYWRnZXRfZGV2X2Rlc2NfVURDX3N0b3JlKCktPnVucmVnaXN0ZXJfZ2FkZ2V0KCktPg0KZnJl ZSB1ZGNfbmFtZS0+c2V0IHVkY19uYW1lIHRvIE5VTEwNCg0KQ29udGV4IDI6DQpnYWRnZXRfZGV2 X2Rlc2NfVURDX3Nob3coKS0+IGFjY2VzcyB1ZGNfbmFtZQ0KDQpDYWxsIHRyYWNlOg0KZHVtcF9i YWNrdHJhY2UrMHgwLzB4MzQwDQpzaG93X3N0YWNrKzB4MTQvMHgxYw0KZHVtcF9zdGFjaysweGU0 LzB4MTM0DQpwcmludF9hZGRyZXNzX2Rlc2NyaXB0aW9uKzB4NzgvMHg0NzgNCl9fa2FzYW5fcmVw b3J0KzB4MjcwLzB4MmVjDQprYXNhbl9yZXBvcnQrMHgxMC8weDE4DQpfX2FzYW5fcmVwb3J0X2xv YWQxX25vYWJvcnQrMHgxOC8weDIwDQpzdHJpbmcrMHhmNC8weDEzOA0KdnNucHJpbnRmKzB4NDI4 LzB4MTRkMA0Kc3ByaW50ZisweGU0LzB4MTJjDQpnYWRnZXRfZGV2X2Rlc2NfVURDX3Nob3crMHg1 NC8weDY0DQpjb25maWdmc19yZWFkX2ZpbGUrMHgyMTAvMHgzYTANCl9fdmZzX3JlYWQrMHhmMC8w eDQ5Yw0KdmZzX3JlYWQrMHgxMzAvMHgyYjQNClN5U19yZWFkKzB4MTE0LzB4MjA4DQplbDBfc3Zj X25ha2VkKzB4MzQvMHgzOA0KDQpBZGQgbXV0ZXhfbG9jayB0byBwcm90ZWN0IHRoaXMga2luZCBv ZiBzY2VuYXJpby4NCg0KU2lnbmVkLW9mZi1ieTogRWRkaWUgSHVuZyA8ZWRkaWUuaHVuZ0BtZWRp YXRlay5jb20+DQpTaWduZWQtb2ZmLWJ5OiBNYWNwYXVsIExpbiA8bWFjcGF1bC5saW5AbWVkaWF0 ZWsuY29tPg0KQ2M6IHN0YWJsZUB2Z2VyLmtlcm5lbC5vcmcNCi0tLQ0KIGRyaXZlcnMvdXNiL2dh ZGdldC9jb25maWdmcy5jIHwgMTEgKysrKysrKysrLS0NCiAxIGZpbGUgY2hhbmdlZCwgOSBpbnNl cnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQ0KDQpkaWZmIC0tZ2l0IGEvZHJpdmVycy91c2IvZ2Fk Z2V0L2NvbmZpZ2ZzLmMgYi9kcml2ZXJzL3VzYi9nYWRnZXQvY29uZmlnZnMuYw0KaW5kZXggOWRj MDZhNGUxYjMwLi4yMTExMGIyODY1YjkgMTAwNjQ0DQotLS0gYS9kcml2ZXJzL3VzYi9nYWRnZXQv Y29uZmlnZnMuYw0KKysrIGIvZHJpdmVycy91c2IvZ2FkZ2V0L2NvbmZpZ2ZzLmMNCkBAIC0yMjEs OSArMjIxLDE2IEBAIHN0YXRpYyBzc2l6ZV90IGdhZGdldF9kZXZfZGVzY19iY2RVU0Jfc3RvcmUo c3RydWN0IGNvbmZpZ19pdGVtICppdGVtLA0KIA0KIHN0YXRpYyBzc2l6ZV90IGdhZGdldF9kZXZf ZGVzY19VRENfc2hvdyhzdHJ1Y3QgY29uZmlnX2l0ZW0gKml0ZW0sIGNoYXIgKnBhZ2UpDQogew0K LQljaGFyICp1ZGNfbmFtZSA9IHRvX2dhZGdldF9pbmZvKGl0ZW0pLT5jb21wb3NpdGUuZ2FkZ2V0 X2RyaXZlci51ZGNfbmFtZTsNCisJc3RydWN0IGdhZGdldF9pbmZvICpnaSA9IHRvX2dhZGdldF9p bmZvKGl0ZW0pOw0KKwljaGFyICp1ZGNfbmFtZTsNCisJaW50IHJldDsNCisNCisJbXV0ZXhfbG9j aygmZ2ktPmxvY2spOw0KKwl1ZGNfbmFtZSA9IGdpLT5jb21wb3NpdGUuZ2FkZ2V0X2RyaXZlci51 ZGNfbmFtZTsNCisJcmV0ID0gc3ByaW50ZihwYWdlLCAiJXNcbiIsIHVkY19uYW1lID86ICIiKTsN CisJbXV0ZXhfdW5sb2NrKCZnaS0+bG9jayk7DQogDQotCXJldHVybiBzcHJpbnRmKHBhZ2UsICIl c1xuIiwgdWRjX25hbWUgPzogIiIpOw0KKwlyZXR1cm4gcmV0Ow0KIH0NCiANCiBzdGF0aWMgaW50 IHVucmVnaXN0ZXJfZ2FkZ2V0KHN0cnVjdCBnYWRnZXRfaW5mbyAqZ2kpDQotLSANCjIuMTguMA0K