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=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 CB559C3A5A0 for ; Mon, 19 Aug 2019 20:20:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9A0CE206DF for ; Mon, 19 Aug 2019 20:20:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728358AbfHSUUD (ORCPT ); Mon, 19 Aug 2019 16:20:03 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:40929 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728014AbfHSUUB (ORCPT ); Mon, 19 Aug 2019 16:20:01 -0400 Received: by mail-io1-f72.google.com with SMTP id v16so5295881ioh.7 for ; Mon, 19 Aug 2019 13:20:01 -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=wevSZW5UX5fk5gUt0Ilf2YFephyvO23N5oYUGBnvx0A=; b=ZHFAUtFvrwGLgxAblPbrdfpXyuFfYK3dqDFjS/pU94c7VnZx1lgjp1Y/LPuWmzIs6i y9eTooEqqv/ox1eyy3EssBzVscxjHn1uR+m49OGCB/S2zXbFZBASYzMSeWucMX8xnHXy ClO7ODG4BjDVs042/uUBYdP8k1iEK5wFoh8k1oRcl00DLWxRAUVzgBTDuFXNcsxEjpd8 489saogZo/UjhZlyQAmR73N4ar7oRKIV3JzEMei7C/VgP6r6mlnl8W/KJuYvRPSg7ySf MoOVNbSAqNS3FGbZQozZKT++UnMJnARr0R+3bNnb7GBPDeHW2wRes5y67S8N6k5a+GPC fyDQ== X-Gm-Message-State: APjAAAWqA4ntZROguqjnoiablJqrXNnLzSwEtEKmaV67Izk/UaNqhQX0 GFJyFVv0gn0a9Hewawt6hjcP/YRTxYrwL1FOjyRFSw/RMhMK X-Google-Smtp-Source: APXvYqwc0eT4VdhPWVT4tXLH/zoDNl26v0l4pZFemeGq8mucabfD4FpNIGy4mLlo8Qe3+n3cM0QiuUBDNz5JRtAzLB0wxkOTPtPi MIME-Version: 1.0 X-Received: by 2002:a6b:620f:: with SMTP id f15mr17938248iog.190.1566246000720; Mon, 19 Aug 2019 13:20:00 -0700 (PDT) Date: Mon, 19 Aug 2019 13:20:00 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000081081805907e10c8@google.com> Subject: Re: WARNING in kmem_cache_alloc_trace From: syzbot To: andreyknvl@google.com, balbi@kernel.org, chunfeng.yun@mediatek.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer still triggered crash: WARNING in yurex_write/usb_submit_urb ------------[ cut here ]------------ URB 00000000c866c77d submitted while active WARNING: CPU: 1 PID: 2816 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: 2816 Comm: syz-executor.4 Not tainted 5.3.0-rc4+ #1 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 62 b7 ef fd 84 db 0f 85 42 f6 ff ff e8 25 b6 ef fd 4c 89 fe 48 c7 c7 c0 67 18 86 c6 05 07 29 3a 04 01 e8 14 9b 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:ffff8881c6f3fc48 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288cfd RDI: ffffed1038de7f7b RBP: ffff8881d1210000 R08: ffff8881c726c800 R09: fffffbfff11ad3a4 R10: fffffbfff11ad3a3 R11: ffffffff88d69d1f R12: 1ffff11038de7f9f R13: 00000000fffffff0 R14: 0000000000000000 R15: ffff8881d63eff00 yurex_write+0x369/0x8f0 drivers/usb/misc/yurex.c:493 __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: 0033:0x459829 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5fe5e65c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829 RDX: 000000000000008d RSI: 0000000020000040 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5fe5e666d4 R13: 00000000004c99b9 R14: 00000000004e1038 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds.. Tested on: commit: d0847550 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git console output: https://syzkaller.appspot.com/x/log.txt?x=16026986600000 kernel config: https://syzkaller.appspot.com/x/.config?x=dbc9c80cc095da19 compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=14fe315a600000