From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: xhci: tegra: Prevent error pointer dereference From: Thierry Reding Message-Id: <20190220162702.GA21303@ulmo> Date: Wed, 20 Feb 2019 17:27:02 +0100 To: Greg Kroah-Hartman Cc: Mathias Nyman , Jonathan Hunter , linux-usb@vger.kernel.org, linux-tegra@vger.kernel.org List-ID: T24gV2VkLCBGZWIgMjAsIDIwMTkgYXQgMDU6MTY6MTJQTSArMDEwMCwgR3JlZyBLcm9haC1IYXJ0 bWFuIHdyb3RlOgo+IE9uIFdlZCwgRmViIDIwLCAyMDE5IGF0IDAyOjQ4OjQxUE0gKzAxMDAsIFRo aWVycnkgUmVkaW5nIHdyb3RlOgo+ID4gRnJvbTogVGhpZXJyeSBSZWRpbmcgPHRyZWRpbmdAbnZp ZGlhLmNvbT4KPiA+IAo+ID4gRHVyaW5nIGluaXRpYWxpemF0aW9uLCB0aGUgaG9zdCBhbmQgc3Vw ZXItc3BlZWQgcG93ZXIgZG9tYWlucyB3aWxsCj4gPiBjb250YWluIGFuIEVSUl9QVFIoKSBlbmNv ZGVkIGVycm9yIGNvZGUgcmF0aGVyIHRoYW4gYmVpbmcgTlVMTC4gVG8KPiA+IGF2b2lkIGEgY3Jh c2gsIHVzZSBhICFJU19FUlJfT1JfTlVMTCgpIGNvbmRpdGlvbiBkdXJpbmcgY2xlYW51cC4KPiA+ IAo+ID4gU2lnbmVkLW9mZi1ieTogVGhpZXJyeSBSZWRpbmcgPHRyZWRpbmdAbnZpZGlhLmNvbT4K PiA+IC0tLQo+ID4gIGRyaXZlcnMvdXNiL2hvc3QveGhjaS10ZWdyYS5jIHwgNCArKy0tCj4gPiAg MSBmaWxlIGNoYW5nZWQsIDIgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkKPiA+IAo+ID4g ZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNiL2hvc3QveGhjaS10ZWdyYS5jIGIvZHJpdmVycy91c2Iv aG9zdC94aGNpLXRlZ3JhLmMKPiA+IGluZGV4IDkzOGZmMDZjMDM0OS4uZWZiMGNhZDg3MTBlIDEw MDY0NAo+ID4gLS0tIGEvZHJpdmVycy91c2IvaG9zdC94aGNpLXRlZ3JhLmMKPiA+ICsrKyBiL2Ry aXZlcnMvdXNiL2hvc3QveGhjaS10ZWdyYS5jCj4gPiBAQCAtOTQxLDkgKzk0MSw5IEBAIHN0YXRp YyB2b2lkIHRlZ3JhX3h1c2JfcG93ZXJkb21haW5fcmVtb3ZlKHN0cnVjdCBkZXZpY2UgKmRldiwK PiA+ICAJCWRldmljZV9saW5rX2RlbCh0ZWdyYS0+Z2VucGRfZGxfc3MpOwo+ID4gIAlpZiAodGVn cmEtPmdlbnBkX2RsX2hvc3QpCj4gPiAgCQlkZXZpY2VfbGlua19kZWwodGVncmEtPmdlbnBkX2Rs X2hvc3QpOwo+ID4gLQlpZiAodGVncmEtPmdlbnBkX2Rldl9zcykKPiA+ICsJaWYgKCFJU19FUlJf T1JfTlVMTCh0ZWdyYS0+Z2VucGRfZGV2X3NzKSkKPiA+ICAJCWRldl9wbV9kb21haW5fZGV0YWNo KHRlZ3JhLT5nZW5wZF9kZXZfc3MsIHRydWUpOwo+ID4gLQlpZiAodGVncmEtPmdlbnBkX2Rldl9o b3N0KQo+ID4gKwlpZiAoIUlTX0VSUl9PUl9OVUxMKHRlZ3JhLT5nZW5wZF9kZXZfaG9zdCkpCj4g PiAgCQlkZXZfcG1fZG9tYWluX2RldGFjaCh0ZWdyYS0+Z2VucGRfZGV2X2hvc3QsIHRydWUpOwo+ ID4gIH0KPiAKPiBTaG91bGQgdGhpcyBnbyB0byBvbGRlciBrZXJuZWxzPyAgSWYgc28sIGFueSBo aW50IGFzIHRvIHdoYXQgY29tbWl0IHRoaXMKPiAiZml4ZXM6Ij8KClRlY2huaWNhbGx5IHRoaXM6 CgpGaXhlczogNjQ5NGE5YWQ4NmRlICgidXNiOiB4aGNpOiB0ZWdyYTogQWRkIGdlbnBkIHN1cHBv cnQiKQoKd2hpY2ggd2FzIG1lcmdlZCBpbnRvIHY0LjIwLgoKSG93ZXZlciwgSSBoYXZlIG5ldmVy IHNlZW4gdGhpcyBhY3R1YWxseSBjcmFzaCBvbiBjdXJyZW50IGtlcm5lbHMgYW5kCm9ubHkgY2Ft ZSBhY3Jvc3MgaXQgd2hpbGUgd29ya2luZyBvbiBhIGNoYW5nZSB0byByZXNldCBjb250cm9scyB3 aGljaApjYW4gY2F1c2UgZGV2X3BtX2RvbWFpbl9hdHRhY2hfYnlfbmFtZSgpIHRvIGZhaWwuIFRo YXQgZnVuY3Rpb24gY2FuJ3QKZmFpbCBpbiBjdXJyZW50IGtlcm5lbHMsIHNvIEkgZG9uJ3QgdGhp bmsgd2UgbmVlZCB0byBmaXggdGhpcyBpbiBvbGQKa2VybmVscy4gU28gaWYgd2UgY2FuIGdldCB0 aGlzIGludG8gdjUuMCwgdGhhdCdkIGJlIGdvb2QgZW5vdWdoIGZvcgptZS4KClRoaWVycnkK