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Wed, 5 Jun 2024 10:36:30 +0800 (CST) Date: Wed, 5 Jun 2024 10:36:30 +0800 (CST) From: sicong To: "Greg KH" Cc: peter.chen@kernel.org, pawell@cadence.com, rogerq@kernel.org, linux-usb@vger.kernel.org Subject: Re:Re: [PATCH v1] usb: cdns3: cdns3-gadget: fix use-after-free bug in cdns3_gadget_exit due to race X-Priority: 3 X-Mailer: Coremail Webmail Server Version XT5.0.14 build 20230109(dcb5de15) Copyright (c) 2002-2024 www.mailtech.cn 163com In-Reply-To: <2024060444-delay-surgical-c8ff@gregkh> References: <20240513021948.133039-1-congei42@163.com> <2024060444-delay-surgical-c8ff@gregkh> X-NTES-SC: AL_Qu2aBfmeu0Ei5iOfZukfm0YUj+44Wsa4uvgk2YJeOpt4jDvp3gsie2dTEUPJ2eSKLB2InwiHYQNu8tpBXZZBZp8VRwvWVBCt0f5/2XijxbIu4A== Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=GBK Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <6d94822a.2eaf.18fe6414d2a.Coremail.congei42@163.com> X-Coremail-Locale: zh_CN X-CM-TRANSID:_____wD3Hyguz19mYBpVAA--.14539W X-CM-SenderInfo: 5frqwvrlusqiywtou0bp/xtbBFQHz8mXAlvOL6QAGsx X-Coremail-Antispam: 1U5529EdanIXcx71UUUUU7vcSsGvfC2KfnxnUU== CgpBdCAyMDI0LTA2LTA0IDIxOjExOjU3LCAiR3JlZyBLSCIgPGdyZWdraEBsaW51eGZvdW5kYXRp b24ub3JnPiB3cm90ZToKPk9uIE1vbiwgTWF5IDEzLCAyMDI0IGF0IDEwOjE5OjQ4QU0gKzA4MDAs IFNpY29uZyBIdWFuZyB3cm90ZToKPj4gVGhpcyBidWcgZXhpc3RzIGluIGRyaXZlcnMvdXNiL2Nk bnMzL2NkbnMzLWdhZGdldC5jLiBGdW5jdGlvbgo+PiBfX2NkbnMzX2dhZGdldF9pbml0IHdpbGwg Y2FsbCBjZG5zM19nYWRnZXRfc3RhcnQgdG8gZG8gZnV0aGVyIGpvYnMKPj4gZHVyaW5nIHRoZSBp bml0aWFsaXphdGlvbiBwcm9jY2VzcyBvZiBjZG5zMyBnYWRnZXQuIEluIGNkbnMzX2dhZGdldF9z dGFydCwKPj4gJnByaXZfZGV2LT5wZW5kaW5nX3N0YXR1c193cSBpcyBib3VuZCB3aXRoIGNkbnMz X3BlbmRpbmdfc2V0dXBfc3RhdHVzX2hhbmRsZXIuCj4+IFRoZW4gdGhpcyB3b3JrIHdpbGwgYmUg YWRkZWQgdG8gc3lzdGVtX2ZyZWV6YWJsZV93cSBpbiBjZG5zM19nYWRnZXRfZXAwX3F1ZXVlLgo+ PiBIZXJlIGlzIHRoZSBjb2RlLgo+PiBxdWV1ZV93b3JrKHN5c3RlbV9mcmVlemFibGVfd3EsICZw cml2X2Rldi0+cGVuZGluZ19zdGF0dXNfd3EpOwo+PiAKPj4gSWYgd2UgY2FsbCBjZG5zM19nYWRn ZXRfZXhpdCB0byByZW1vdmUgdGhlIGRldmljZSBhbmQgbWFrZSBjbGVhbnVwLAo+PiB0aGVyZSBh cmUgc29tZSB1bmZpbmlzaGVkIHdvcmtzLiBUaGlzIGZ1bmN0aW9uIHdpbGwgY2FsbCBjZG5zM19m cmVlX2FsbF9lcHMgdG8KPj4gZnJlZSBhbGwgdGhlIGVuZHBvaW50cy4gSG93ZXZlciwgaWYgY2Ru czNfcGVuZGluZ19zZXR1cF9zdGF0dXNfaGFuZGxlciBpcwo+PiBzY2hlZHVsZWQgdG8gcnVuIGFm dGVyIHRoZSBmcmVlIGpvYiwgaXQgd2lsbCBjYXVzZSB1c2UtYWZ0ZXItZnJlZSBlcnJvciBhcwo+ PiBjZG5zM19wZW5kaW5nX3NldHVwX3N0YXR1c19oYW5kbGVyIHdpbGwgdXNlIHRoZSBlbmRwb2lu dCBpbiB0aGUgZm9sbG93aW5nIGNvZGUuCj4+IHJlcXVlc3QtPmNvbXBsZXRlKCZwcml2X2Rldi0+ ZXBzWzBdLT5lbmRwb2ludCwgcmVxdWVzdCk7Cj4+IAo+PiBUaGUgcG9zc2libGUgZXhlY3V0aW9u IGZsb3cgdGhhdCBtYXkgbGVhZCB0byB0aGlzIGlzc3VlIGlzIGFzIGZvbGxvd3M6Cj4+IENQVTAg ICAgICAgICAgICAgICAgICAgIENQVTEKPj4gICAgICAgICAgICAgICAgICAgICAgIHwgX19jZG5z M19nYWRnZXRfaW5pdAo+PiAgICAgICAgICAgICAgICAgICAgICAgfCBjZG5zM19nYWRnZXRfc3Rh cnQKPj4gY2RuczNfZ2FkZ2V0X2V4aXQgICAgIHwKPj4gY2RuczNfZnJlZV9hbGxfZXBzICAgIHwK Pj4gZGV2bV9rZnJlZSAoZnJlZSkgICAgIHwKPj4gICAgICAgICAgICAgICAgICAgICAgIHwgY2Ru czNfcGVuZGluZ19zZXR1cF9zdGF0dXNfaGFuZGxlcgo+PiAgICAgICAgICAgICAgICAgICAgICAg fCAmcHJpdl9kZXYtPmVwc1swXS0+ZW5kcG9pbnQgKHVzZSkKPj4gCj4+IEZpeCBpdCBieSBjbGVh bmluZyB0aGUgd29yayBpbiBjZG5zM19nYWRnZXRfZXhpdC4KPj4gCj4+IFNpZ25lZC1vZmYtYnk6 IFNpY29uZyBIdWFuZyA8Y29uZ2VpNDJAMTYzLmNvbT4KPj4gLS0tCj4+ICBkcml2ZXJzL3VzYi9j ZG5zMy9jZG5zMy1nYWRnZXQuYyB8IDMgKysrCj4+ICAxIGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRp b25zKCspCj4+IAo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy91c2IvY2RuczMvY2RuczMtZ2FkZ2V0 LmMgYi9kcml2ZXJzL3VzYi9jZG5zMy9jZG5zMy1nYWRnZXQuYwo+PiBpbmRleCBmZDFiZWIxMGJi YTcuLjBmMmUxNDNiZDE3YSAxMDA2NDQKPj4gLS0tIGEvZHJpdmVycy91c2IvY2RuczMvY2RuczMt Z2FkZ2V0LmMKPj4gKysrIGIvZHJpdmVycy91c2IvY2RuczMvY2RuczMtZ2FkZ2V0LmMKPj4gQEAg LTMyNTIsNiArMzI1Miw5IEBAIHN0YXRpYyB2b2lkIGNkbnMzX2dhZGdldF9leGl0KHN0cnVjdCBj ZG5zICpjZG5zKQo+PiAgCXBtX3J1bnRpbWVfbWFya19sYXN0X2J1c3koY2Rucy0+ZGV2KTsKPj4g IAlwbV9ydW50aW1lX3B1dF9hdXRvc3VzcGVuZChjZG5zLT5kZXYpOwo+PiAgCj4+ICsJY2FuY2Vs X3dvcmtfc3luYygmcHJpdl9kZXYtPnBlbmRpbmdfc3RhdHVzX3dxKTsKPj4gKwljYW5jZWxfd29y a19zeW5jKCZwcml2X2Rldi0+YWxpZ25lZF9idWZfd3EpOwo+PiArCj4+ICAJdXNiX2RlbF9nYWRn ZXQoJnByaXZfZGV2LT5nYWRnZXQpOwo+PiAgCWRldm1fZnJlZV9pcnEoY2Rucy0+ZGV2LCBjZG5z LT5kZXZfaXJxLCBwcml2X2Rldik7Cj4+ICAKPj4gLS0gCj4+IDIuMzQuMQo+Cj5XaGF0IGNvbW1p dCBpZCBkb2VzIHRoaXMgZml4Pwo+Cj50aGFua3MsCj4KCj5ncmVnIGstaAoKCkkgbWFkZSB0aGUg Y2hhbmdlcyBiYXNlZCBvbiB0aGUgZm9sbG93aW5nIGNvbW1pdCBpbmZvcm1hdGlvbi4KY29tbWl0 IDUxNDc0YWI0NGFiZjkwNzAyM2E4YTg3NWU3OTliMDdkZTQ2MWU0NjYgKG9yaWdpbi91c2ItdGVz dGluZywgb3JpZ2luL3VzYi1uZXh0KQoKcmVnYXJkcywKClNpY29uZyBIdWFuZwoK