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 X-Spam-Level: X-Spam-Status: No, score=-13.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_2 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE254C2BA19 for ; Thu, 23 Apr 2020 11:01:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B0C5220704 for ; Thu, 23 Apr 2020 11:01:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728020AbgDWLBq (ORCPT ); Thu, 23 Apr 2020 07:01:46 -0400 Received: from mx2.suse.de ([195.135.220.15]:44222 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727883AbgDWLBq (ORCPT ); Thu, 23 Apr 2020 07:01:46 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id EB86BB0B7; Thu, 23 Apr 2020 11:01:43 +0000 (UTC) Message-ID: <1587639690.23108.2.camel@suse.com> Subject: Re: general protection fault in go7007_usb_probe From: Oliver Neukum To: syzbot , andreyknvl@google.com, hverkuil-cisco@xs4all.nl, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, syzkaller-bugs@googlegroups.com Date: Thu, 23 Apr 2020 13:01:30 +0200 In-Reply-To: <0000000000003cbf8e05a3d57b98@google.com> References: <0000000000003cbf8e05a3d57b98@google.com> Content-Type: multipart/mixed; boundary="=-q2m0MxcCOOFn1/lZrA+P" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-q2m0MxcCOOFn1/lZrA+P Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Am Dienstag, den 21.04.2020, 16:36 -0700 schrieb syzbot: > Hello, > > syzbot found the following crash on: > > HEAD commit: e9010320 usb: cdns3: gadget: make a bunch of functions sta.. > git tree: https://github.com/google/kasan.git usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=1263a930100000 > kernel config: https://syzkaller.appspot.com/x/.config?x=bd14feb44652cfaf > dashboard link: https://syzkaller.appspot.com/bug?extid=cabfa4b5b05ff6be4ef0 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > Unfortunately, I don't have any reproducer for this crash yet. > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+cabfa4b5b05ff6be4ef0@syzkaller.appspotmail.com #syz test: https://github.com/google/kasan.git e9010320 --=-q2m0MxcCOOFn1/lZrA+P Content-Disposition: attachment; filename="0001-go7007-add-sanity-checking.patch" Content-Transfer-Encoding: base64 Content-Type: text/x-patch; name="0001-go7007-add-sanity-checking.patch"; charset="UTF-8" RnJvbSA1ZjFhNmJkMGJmMDEzNzkyYjg2YTAxYjU4ZjlmNmU1N2YxYzlkMDY1IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBPbGl2ZXIgTmV1a3VtIDxvbmV1a3VtQHN1c2UuY29tPgpEYXRl OiBXZWQsIDIyIEFwciAyMDIwIDEzOjQ5OjU1ICswMjAwClN1YmplY3Q6IFtQQVRDSF0gZ283MDA3 OiBhZGQgc2FuaXR5IGNoZWNraW5nCgpBIG1hbGljaW91cyBVU0IgZGV2aWNlIG1heSBsYWNrIGVu ZHBvaW50cyB0aGUgZHJpdmVyIGFzc3VtZXMgdG8gZXhpc3QKQWNjZXNzaW5nIHRoZW0gbGVhZHMg dG8gTlVMTCBwb2ludGVyIGFjY2Vzc2VzLiBUaGlzIHBhdGNoIGludHJvZHVjZXMKc2FuaXR5IGNo ZWNraW5nLgoKU2lnbmVkLW9mZi1ieTogT2xpdmVyIE5ldWt1bSA8b25ldWt1bUBzdXNlLmNvbT4K Rml4ZXM6IDg2NmI4Njk1ZDY3ZTggKCJTdGFnaW5nOiBhZGQgdGhlIGdvNzAwNyB2aWRlbyBkcml2 ZXIiKQotLS0KIGRyaXZlcnMvbWVkaWEvdXNiL2dvNzAwNy9nbzcwMDctdXNiLmMgfCAxNSArKysr KysrKysrKysrKy0KIDEgZmlsZSBjaGFuZ2VkLCAxNCBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9u KC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9tZWRpYS91c2IvZ283MDA3L2dvNzAwNy11c2IuYyBi L2RyaXZlcnMvbWVkaWEvdXNiL2dvNzAwNy9nbzcwMDctdXNiLmMKaW5kZXggZjg4OWM5ZDc0MGNk Li5hNGY0ZmQyMzBhNjcgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvbWVkaWEvdXNiL2dvNzAwNy9nbzcw MDctdXNiLmMKKysrIGIvZHJpdmVycy9tZWRpYS91c2IvZ283MDA3L2dvNzAwNy11c2IuYwpAQCAt MTEyMSw2ICsxMTIxLDE0IEBAIHN0YXRpYyBpbnQgZ283MDA3X3VzYl9wcm9iZShzdHJ1Y3QgdXNi X2ludGVyZmFjZSAqaW50ZiwKIAkJcmV0dXJuIC1FTk9NRU07CiAJfQogCisJLyogc2FuaXR5IGNo ZWNrcyAqLworICAgIGlmICh1c2IgJiYgdXNiLT51c2JkZXYpCisgICAgICAgIGVwID0gdXNiLT51 c2JkZXYtPmVwX2luWzRdOworICAgIGVsc2UKKyAgICAgICAgZXAgPSBOVUxMOworCWlmICghZXAp CisJCXJldHVybiAtRU5PREVWOworCiAJdXNiLT5ib2FyZCA9IGJvYXJkOwogCXVzYi0+dXNiZGV2 ID0gdXNiZGV2OwogCXVzYl9tYWtlX3BhdGgodXNiZGV2LCBnby0+YnVzX2luZm8sIHNpemVvZihn by0+YnVzX2luZm8pKTsKQEAgLTExNDEsNyArMTE0OSw2IEBAIHN0YXRpYyBpbnQgZ283MDA3X3Vz Yl9wcm9iZShzdHJ1Y3QgdXNiX2ludGVyZmFjZSAqaW50ZiwKIAlpZiAodXNiLT5pbnRyX3VyYi0+ dHJhbnNmZXJfYnVmZmVyID09IE5VTEwpCiAJCWdvdG8gYWxsb2NmYWlsOwogCi0JZXAgPSB1c2It PnVzYmRldi0+ZXBfaW5bNF07CiAJaWYgKHVzYl9lbmRwb2ludF90eXBlKCZlcC0+ZGVzYykgPT0g VVNCX0VORFBPSU5UX1hGRVJfQlVMSykKIAkJdXNiX2ZpbGxfYnVsa191cmIodXNiLT5pbnRyX3Vy YiwgdXNiLT51c2JkZXYsCiAJCQl1c2JfcmN2YnVsa3BpcGUodXNiLT51c2JkZXYsIDQpLApAQCAt MTI2Myw5ICsxMjcwLDEzIEBAIHN0YXRpYyBpbnQgZ283MDA3X3VzYl9wcm9iZShzdHJ1Y3QgdXNi X2ludGVyZmFjZSAqaW50ZiwKIAogCS8qIEFsbG9jYXRlIHRoZSBVUkJzIGFuZCBidWZmZXJzIGZv ciByZWNlaXZpbmcgdGhlIHZpZGVvIHN0cmVhbSAqLwogCWlmIChib2FyZC0+ZmxhZ3MgJiBHTzcw MDdfVVNCX0VaVVNCKSB7CisJCWlmICghdXNiLT51c2JkZXYtPmVwX2luWzZdKQorCQkJZ290byBh bGxvY2ZhaWw7CiAJCXZfdXJiX2xlbiA9IDEwMjQ7CiAJCXZpZGVvX3BpcGUgPSB1c2JfcmN2YnVs a3BpcGUodXNiLT51c2JkZXYsIDYpOwogCX0gZWxzZSB7CisJCWlmICghdXNiLT51c2JkZXYtPmVw X2luWzFdKQorCQkJZ290byBhbGxvY2ZhaWw7CiAJCXZfdXJiX2xlbiA9IDUxMjsKIAkJdmlkZW9f cGlwZSA9IHVzYl9yY3ZidWxrcGlwZSh1c2ItPnVzYmRldiwgMSk7CiAJfQpAQCAtMTI4NSw2ICsx Mjk2LDggQEAgc3RhdGljIGludCBnbzcwMDdfdXNiX3Byb2JlKHN0cnVjdCB1c2JfaW50ZXJmYWNl ICppbnRmLAogCS8qIEFsbG9jYXRlIHRoZSBVUkJzIGFuZCBidWZmZXJzIGZvciByZWNlaXZpbmcg dGhlIGF1ZGlvIHN0cmVhbSAqLwogCWlmICgoYm9hcmQtPmZsYWdzICYgR083MDA3X1VTQl9FWlVT QikgJiYKIAkgICAgKGJvYXJkLT5tYWluX2luZm8uZmxhZ3MgJiBHTzcwMDdfQk9BUkRfSEFTX0FV RElPKSkgeworCQlpZiAoIXVzYi0+dXNiZGV2LT5lcF9pbls4XSkKKwkJCWdvdG8gYWxsb2NmYWls OwogCQlmb3IgKGkgPSAwOyBpIDwgODsgKytpKSB7CiAJCQl1c2ItPmF1ZGlvX3VyYnNbaV0gPSB1 c2JfYWxsb2NfdXJiKDAsIEdGUF9LRVJORUwpOwogCQkJaWYgKHVzYi0+YXVkaW9fdXJic1tpXSA9 PSBOVUxMKQotLSAKMi4xNi40Cgo= --=-q2m0MxcCOOFn1/lZrA+P--