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=-13.3 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 A2EF7C4CEC9 for ; Tue, 17 Sep 2019 11:22:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 75E2F21852 for ; Tue, 17 Sep 2019 11:22:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726959AbfIQLW4 (ORCPT ); Tue, 17 Sep 2019 07:22:56 -0400 Received: from mx2.suse.de ([195.135.220.15]:39092 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726230AbfIQLW4 (ORCPT ); Tue, 17 Sep 2019 07:22:56 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 77CF8B0E6; Tue, 17 Sep 2019 11:22:54 +0000 (UTC) Message-ID: <1568719373.23075.4.camel@suse.com> Subject: Re: divide error in usbnet_update_max_qlen From: Oliver Neukum To: syzbot , davem@davemloft.net, andreyknvl@google.com, syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org Date: Tue, 17 Sep 2019 13:22:53 +0200 In-Reply-To: <000000000000b83b550592ab965b@google.com> References: <000000000000b83b550592ab965b@google.com> Content-Type: multipart/mixed; boundary="=-Yd95Qj5bjthxkmik5dv9" 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 --=-Yd95Qj5bjthxkmik5dv9 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Am Montag, den 16.09.2019, 06:29 -0700 schrieb syzbot: > Hello, > > syzbot found the following crash on: > > HEAD commit: f0df5c1b usb-fuzzer: main usb gadget fuzzer driver > git tree: https://github.com/google/kasan.git usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=117659fa600000 > kernel config: https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5 > dashboard link: https://syzkaller.appspot.com/bug?extid=6102c120be558c885f04 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12107ba9600000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=146014e6600000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+6102c120be558c885f04@syzkaller.appspotmail.com #syz test: https://github.com/google/kasan.git f0df5c1b --=-Yd95Qj5bjthxkmik5dv9 Content-Disposition: attachment; filename="0001-usbnet-sanity-checking-of-packet-sizes.patch" Content-Transfer-Encoding: base64 Content-Type: text/x-patch; name="0001-usbnet-sanity-checking-of-packet-sizes.patch"; charset="UTF-8" RnJvbSA1N2MyNDQzYjJhNzY3OGE2ZjdmNjQzN2Y3NDFmNDlmMDZhNTEwNGZiIE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBPbGl2ZXIgTmV1a3VtIDxvbmV1a3VtQHN1c2UuY29tPgpEYXRl OiBUdWUsIDE3IFNlcCAyMDE5IDExOjUxOjU1ICswMjAwClN1YmplY3Q6IFtQQVRDSF0gdXNibmV0 OiBzYW5pdHkgY2hlY2tpbmcgb2YgcGFja2V0IHNpemVzCgpNYWxpY2lvdXMgZGV2aWNlcyBjYW4g c2V0IHRoaXMgdG8gemVybyBhbmQgd2UgZGl2aWRlIGJ5IGl0LgpJbnRyb2R1Y2Ugc2FuaXR5IGNo ZWNraW5nLgoKU2lnbmVkLW9mZi1ieTogT2xpdmVyIE5ldWt1bSA8b25ldWt1bUBzdXNlLmNvbT4K LS0tCiBkcml2ZXJzL25ldC91c2IvdXNibmV0LmMgfCAzICsrKwogMSBmaWxlIGNoYW5nZWQsIDMg aW5zZXJ0aW9ucygrKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvbmV0L3VzYi91c2JuZXQuYyBiL2Ry aXZlcnMvbmV0L3VzYi91c2JuZXQuYwppbmRleCA1ODk1MmE3OWIwNWYuLmU0NDg0OTQ5OWI4OSAx MDA2NDQKLS0tIGEvZHJpdmVycy9uZXQvdXNiL3VzYm5ldC5jCisrKyBiL2RyaXZlcnMvbmV0L3Vz Yi91c2JuZXQuYwpAQCAtMzM5LDYgKzMzOSw4IEBAIHZvaWQgdXNibmV0X3VwZGF0ZV9tYXhfcWxl bihzdHJ1Y3QgdXNibmV0ICpkZXYpCiB7CiAJZW51bSB1c2JfZGV2aWNlX3NwZWVkIHNwZWVkID0g ZGV2LT51ZGV2LT5zcGVlZDsKIAorCWlmICghZGV2LT5yeF91cmJfc2l6ZSB8fCAhZGV2LT5oYXJk X210dSkKKwkJZ290byBpbnNhbml0eTsKIAlzd2l0Y2ggKHNwZWVkKSB7CiAJY2FzZSBVU0JfU1BF RURfSElHSDoKIAkJZGV2LT5yeF9xbGVuID0gTUFYX1FVRVVFX01FTU9SWSAvIGRldi0+cnhfdXJi X3NpemU7CkBAIC0zNTUsNiArMzU3LDcgQEAgdm9pZCB1c2JuZXRfdXBkYXRlX21heF9xbGVuKHN0 cnVjdCB1c2JuZXQgKmRldikKIAkJZGV2LT50eF9xbGVuID0gNSAqIE1BWF9RVUVVRV9NRU1PUlkg LyBkZXYtPmhhcmRfbXR1OwogCQlicmVhazsKIAlkZWZhdWx0OgoraW5zYW5pdHk6CiAJCWRldi0+ cnhfcWxlbiA9IGRldi0+dHhfcWxlbiA9IDQ7CiAJfQogfQotLSAKMi4xNi40Cgo= --=-Yd95Qj5bjthxkmik5dv9--