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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 E8C16C3A5A0 for ; Tue, 20 Aug 2019 00:50:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C2F4122CF4 for ; Tue, 20 Aug 2019 00:50:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728807AbfHTAuH (ORCPT ); Mon, 19 Aug 2019 20:50:07 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:49544 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728773AbfHTAuH (ORCPT ); Mon, 19 Aug 2019 20:50:07 -0400 Received: by mail-io1-f69.google.com with SMTP id k13so5938898ioh.16 for ; Mon, 19 Aug 2019 17:50:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=ayISk8pRIZ3fvLz0q0dseQ9S0ykGRFj0hmMBya3EZZY=; b=oUJU2rJk4sehciAmHFbWfXKFYmaLeoTexqcBt9BAZQT4Uxj9SJzIjwSVOfiTAoSpoU js0sSgiMZnVPvpmEsH4wgejIFXzdz8y3c7taXlDVnqiKpbDrV+b6MY+PsJomXOE042vm C2ble/KxcS98ofFaUprWhHZX4Uf2pOj4+kMDOxO7HzC302qVczRJjVWmaaPhIR1pdcZf 1m7P4CY3nKXxSATRvPQaeZx+ijJuMBX15dvy4tXFMsOKtiMIk7sx57Pl4+OBObAZMZqO fAg/Wb3wHKRLNO/sE7jQLm6CgzPcKxuR8J3xspbXv+xtjlUmD5reSagjnlPww2LQMBkG MFag== X-Gm-Message-State: APjAAAW9T2xtuSHhG6UGg3hIriEzMCtKfJ7gOUGxs+uTYsP4Ge298tCS +rlyff4ktIdHJC5mjZ2K+uYzwJyGHKKnVaWUk6VL/O7Dpitk X-Google-Smtp-Source: APXvYqx0McsdF+sn6ssiL6gFDgRhemyAQaQFGH6OYx2mD5Ykw68jfXazglGGJcCFqkfi9F3gqRDGnQIg3wGPL2mU8sH7oDhWqQXf MIME-Version: 1.0 X-Received: by 2002:a6b:ee12:: with SMTP id i18mr28234407ioh.172.1566262206499; Mon, 19 Aug 2019 17:50:06 -0700 (PDT) Date: Mon, 19 Aug 2019 17:50:06 -0700 In-Reply-To: <00000000000098afd80590796d14@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000719222059081d6f2@google.com> Subject: Re: WARNING in wdm_write/usb_submit_urb From: syzbot To: andreyknvl@google.com, gregkh@linuxfoundation.org, gustavo@embeddedor.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: e06ce4da 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=14a8c0b6600000 kernel config: https://syzkaller.appspot.com/x/.config?x=d0c62209eedfd54e dashboard link: https://syzkaller.appspot.com/bug?extid=d232cca6ec42c2edb3fc compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12b6dfba600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15f63a4c600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+d232cca6ec42c2edb3fc@syzkaller.appspotmail.com ------------[ cut here ]------------ URB 000000005fab893a submitted while active WARNING: CPU: 1 PID: 1788 at drivers/usb/core/urb.c:362 usb_submit_urb+0x10c1/0x13b0 drivers/usb/core/urb.c:362 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 1788 Comm: syz-executor522 Not tainted 5.3.0-rc5+ #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 panic+0x2a3/0x6da kernel/panic.c:219 __warn.cold+0x20/0x4a kernel/panic.c:576 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:usb_submit_urb+0x10c1/0x13b0 drivers/usb/core/urb.c:362 Code: 89 de e8 82 bc ef fd 84 db 0f 85 42 f6 ff ff e8 45 bb ef fd 4c 89 fe 48 c7 c7 80 68 18 86 c6 05 27 30 3a 04 01 e8 34 a1 c5 fd <0f> 0b e9 20 f6 ff ff c7 44 24 14 01 00 00 00 e9 d7 f6 ff ff 41 bd RSP: 0018:ffff8881d036fc98 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288cfd RDI: ffffed103a06df85 RBP: ffff8881cfce56a0 R08: ffff8881d1ce4800 R09: ffffed103b663ee7 R10: ffffed103b663ee6 R11: ffff8881db31f737 R12: 1ffff1103a06dfa7 R13: 00000000fffffff0 R14: ffff8881cfce5688 R15: ffff8881d8106d00 wdm_write+0x828/0xd87 drivers/usb/class/cdc-wdm.c:423 __vfs_write+0x76/0x100 fs/read_write.c:494 vfs_write+0x262/0x5c0 fs/read_write.c:558 ksys_write+0x127/0x250 fs/read_write.c:611 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x447029 Code: e8 ec e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1e9e0a4da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000447029 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc2c R13: 0000000020000000 R14: 00000000004af170 R15: 00000000000003e8 Kernel Offset: disabled Rebooting in 86400 seconds..