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 BF80BC433FF for ; Thu, 8 Aug 2019 12:38:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8EF8621874 for ; Thu, 8 Aug 2019 12:38:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732473AbfHHMiP (ORCPT ); Thu, 8 Aug 2019 08:38:15 -0400 Received: from mail-ot1-f72.google.com ([209.85.210.72]:44381 "EHLO mail-ot1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728120AbfHHMiI (ORCPT ); Thu, 8 Aug 2019 08:38:08 -0400 Received: by mail-ot1-f72.google.com with SMTP id q16so61525581otn.11 for ; Thu, 08 Aug 2019 05:38:07 -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=l8epR7668LWEzctJNnXHSNPRPIYGaCWB8LBtSCX2CzA=; b=JecHv1q4mT2CB2fdTp60YiGutXud8D0X7gQzpWdCbzCYitINDhr91SdVENUuz9lolA P+DjW1nBuT0SZhAPimExndon7vHnijph81adP8gUKP4/1l8ntMS2NmOSbK3MbZRPl4gf pHPbJQoYJGeg91LaNg5zD6WyIqxlLK59wrO2hrBhfDFwMvcnSmD3WeweslI3o65wa37u ZZe5n3Vs7Bp83Av2pA8yqCBiggPRtI6D76EfjCY5y6I+ZgJo8W9kAhsJTBC37DQPk+QH 4BmXw7Nhb43RIgUxL7WAWiExjj6WySmdgBOK1FomlMvxL+JvpWb3oMgV3V2X4a+Xsx0L 2bsQ== X-Gm-Message-State: APjAAAUK5wQglzIS8VrcYh7ORBujtQ8WKD3onlGIVbkqwWjvMfsR+Niy WrAGidOpgHzkUMBXboRr5FVGLumSHlAa7ydU1MtHNoMHalpi X-Google-Smtp-Source: APXvYqyvI3yskL4wQcyCi4AMeNxRy1mOxlW92W8FM4NcDcoqgiMNCT37590NBAPR+PPCwquVEreJx5ydLNKnBkFXNSPe2kbvqPGi MIME-Version: 1.0 X-Received: by 2002:a5d:9642:: with SMTP id d2mr14353752ios.278.1565267886862; Thu, 08 Aug 2019 05:38:06 -0700 (PDT) Date: Thu, 08 Aug 2019 05:38:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005ff828058f9a5480@google.com> Subject: KASAN: use-after-free Read in usbhid_raw_request 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-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: e96407b4 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=16000516600000 kernel config: https://syzkaller.appspot.com/x/.config?x=cfa2c18fb6a8068e dashboard link: https://syzkaller.appspot.com/bug?extid=75e6910bf03e266a277f 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+75e6910bf03e266a277f@syzkaller.appspotmail.com ================================================================== BUG: KASAN: use-after-free in usbhid_get_raw_report drivers/hid/usbhid/hid-core.c:865 [inline] BUG: KASAN: use-after-free in usbhid_raw_request+0x5f2/0x640 drivers/hid/usbhid/hid-core.c:1263 Read of size 8 at addr ffff8881c8702270 by task syz-executor.4/8993 CPU: 0 PID: 8993 Comm: syz-executor.4 Not tainted 5.3.0-rc2+ #25 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 usbhid_get_raw_report drivers/hid/usbhid/hid-core.c:865 [inline] usbhid_raw_request+0x5f2/0x640 drivers/hid/usbhid/hid-core.c:1263 hid_hw_raw_request include/linux/hid.h:1079 [inline] hidraw_get_report drivers/hid/hidraw.c:228 [inline] hidraw_ioctl+0x936/0xae0 drivers/hid/hidraw.c:426 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd2d/0x1330 fs/ioctl.c:696 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718 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:00007f7f49878c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829 RDX: 0000000020000180 RSI: 00000000c0404807 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7f498796d4 R13: 00000000004c2152 R14: 00000000004d54f8 R15: 00000000ffffffff Allocated by task 83: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:487 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:460 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:748 [inline] usb_set_configuration+0x2c4/0x1670 drivers/usb/core/message.c:1846 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x650 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:882 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2114 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536 hub_port_connect drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1b5c/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Freed by task 83: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:449 slab_free_hook mm/slub.c:1423 [inline] slab_free_freelist_hook mm/slub.c:1470 [inline] slab_free mm/slub.c:3012 [inline] kfree+0xe4/0x2f0 mm/slub.c:3953 device_release+0x71/0x200 drivers/base/core.c:1064 kobject_cleanup lib/kobject.c:693 [inline] kobject_release lib/kobject.c:722 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x171/0x280 lib/kobject.c:739 put_device+0x1b/0x30 drivers/base/core.c:2213 usb_disable_device+0x2ce/0x690 drivers/usb/core/message.c:1244 usb_disconnect+0x284/0x8d0 drivers/usb/core/hub.c:2199 hub_port_connect drivers/usb/core/hub.c:4949 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1454/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff8881c8702200 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 112 bytes inside of 2048-byte region [ffff8881c8702200, ffff8881c8702a00) The buggy address belongs to the page: page:ffffea000721c000 refcount:1 mapcount:0 mapping:ffff8881da00c000 index:0x0 compound_mapcount: 0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c000 raw: 0000000000000000 00000000000f000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c8702100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c8702180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc > ffff8881c8702200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881c8702280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c8702300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- 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.