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,URIBL_BLOCKED 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 2DDB2C3A5A2 for ; Tue, 3 Sep 2019 12:08:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0DD86208E4 for ; Tue, 3 Sep 2019 12:08:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729276AbfICMIo (ORCPT ); Tue, 3 Sep 2019 08:08:44 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:56017 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729129AbfICMIM (ORCPT ); Tue, 3 Sep 2019 08:08:12 -0400 Received: by mail-io1-f69.google.com with SMTP id i2so17120527iof.22 for ; Tue, 03 Sep 2019 05:08:12 -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:message-id:subject:from:to; bh=TC3iHUTCSChpOO9kdTIrV60rE1zk74Z3qCyK3WcbrFo=; b=qkmlM5f7XfDMlMtaJS/C1kE8RrhJ1MixaD2gfpig/U95WYMHoVv5cD9xKixsWM7sti Xc+0O5B9YT+t5JAWBqeOmD4miW3OsyBIRS/6ptHQ5illJtG+LHSOjCi6cEAsL6AAsyZW LSsj0H5D2b9sSD+qO6Tsrgegp1UHTbmFwn5NHGa2KzmFI1q3uosAeS48cVlTYuSVZTPi bQ+Lsxl2Mufxswz0FNFrDmmXnk54FEr/8bD54vRjs/1usr0a1jSBftDqfwXQxwdEBunZ /+ZhutEyn4ujwcJll2yHJw2zHHrJA1FmgR+J7CD9aeoZsA3Q4LuJopNLLFSZtEqRWHXz gFvw== X-Gm-Message-State: APjAAAXxzHDGNimbeZa5oDMrUmdOb5w3heff6XqeJ/QlhKWufVwI/j5g xC0fOudbuAo5Scn/Y1y/kZQhhwtVo8ZS3DBqbt2mTw6YiQDL X-Google-Smtp-Source: APXvYqxp5hGtiwCZRsxNl3oATS0MGb9xC/IxFV4uCFj/jeSGy+LB434biLqFKaGtZL26dPKjHpSBfNjw3iXFe6UVrO6LLhms0lqn MIME-Version: 1.0 X-Received: by 2002:a5e:9b12:: with SMTP id j18mr23942819iok.54.1567512491747; Tue, 03 Sep 2019 05:08:11 -0700 (PDT) Date: Tue, 03 Sep 2019 05:08:11 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004070630591a4f124@google.com> Subject: KASAN: use-after-free Read in usbhid_close From: syzbot To: andreyknvl@google.com, benjamin.tissoires@redhat.com, jikos@kernel.org, linux-input@vger.kernel.org, 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-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: eea39f24 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=140a786c600000 kernel config: https://syzkaller.appspot.com/x/.config?x=d0c62209eedfd54e dashboard link: https://syzkaller.appspot.com/bug?extid=90b997df76897a013829 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+90b997df76897a013829@syzkaller.appspotmail.com ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x302a/0x3b50 kernel/locking/lockdep.c:3753 Read of size 8 at addr ffff8881d34368a0 by task syz-executor.3/10760 CPU: 0 PID: 10760 Comm: syz-executor.3 Not tainted 5.3.0-rc5+ #28 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 print_address_description+0x6a/0x32c mm/kasan/report.c:351 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482 kasan_report+0xe/0x12 mm/kasan/common.c:612 __lock_acquire+0x302a/0x3b50 kernel/locking/lockdep.c:3753 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4412 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x2d/0x40 kernel/locking/spinlock.c:167 spin_lock_irq include/linux/spinlock.h:363 [inline] usbhid_close+0x51/0x210 drivers/hid/usbhid/hid-core.c:740 hid_hw_close+0xa8/0xd0 drivers/hid/hid-core.c:2046 drop_ref.part.0+0x32/0xe0 drivers/hid/hidraw.c:337 drop_ref drivers/hid/hidraw.c:360 [inline] hidraw_release+0x34f/0x440 drivers/hid/hidraw.c:356 __fput+0x2d7/0x840 fs/file_table.c:280 task_work_run+0x13f/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413561 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffc873b3300 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000413561 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000055395a94 R09: 0000000055395a98 R10: 00007ffc873b33e0 R11: 0000000000000293 R12: 000000000075bfc8 R13: 0000000000096f96 R14: 0000000000762460 R15: ffffffffffffffff The buggy address belongs to the page: page:ffffea00074d0d80 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0x200000000000000() raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881d3436780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8881d3436800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > ffff8881d3436880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff8881d3436900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8881d3436980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.