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=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 E32DDC32750 for ; Fri, 2 Aug 2019 12:58:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA7A52064A for ; Fri, 2 Aug 2019 12:58:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392876AbfHBM6H (ORCPT ); Fri, 2 Aug 2019 08:58:07 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:54456 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390698AbfHBM6H (ORCPT ); Fri, 2 Aug 2019 08:58:07 -0400 Received: by mail-io1-f71.google.com with SMTP id n8so82972067ioo.21 for ; Fri, 02 Aug 2019 05:58:06 -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:message-id:subject:from:to; bh=RSoa+Z/mLU84mAOmRDcZB2JHdOSgpZcn3y0lXZf7bRo=; b=B1Kljpesy33E/sNMLlOvDjEcd7KqElw56nL4d0umtlD9ZU9AyMvGz09n/pAnrvIrnL ibiyBr+0mAJLVDP21O1b/te/BhPlkd/coTK+VtKBkCLXY4Pn9Iiq8TI6z50xQhFqTBfz HxDtAE97gv02R/ucs9gtgt0heYz14bJDcEITzNpt+aIDaVvOXknq2di4Vgj6281fSL4I wGYIfHvPz0aL0pphcVhUMCtXzu9XWhKoVowTpCU2gDDu9gUbM75xB7+sMrsflG4EE0B5 5vbMoVK33Fg/b2/2z0rMHu1E1d+VGUFqnkbxDRBSTxr2PecneLziS1iYSxD0ZR0QPPJA KLUg== X-Gm-Message-State: APjAAAVCq0A6shmcK0UOGQ8DmcO+mMVwrSYXtXm3GH4suXS7DEfISc3+ 1TWKU01iY0Cl1QLFRRribBWjQfXzC/CdNS0x2XPFFBArSe+d X-Google-Smtp-Source: APXvYqyyeHrOMbTkBVEDk1EIr31GYrHd31vnnXVxMJ4ISyvwwjaAa93zKNys2pPAFyQE8MvXv+Oe0XxCAcpuksvbDCevQC3AxTxC MIME-Version: 1.0 X-Received: by 2002:a02:b713:: with SMTP id g19mr138123528jam.77.1564750685994; Fri, 02 Aug 2019 05:58:05 -0700 (PDT) Date: Fri, 02 Aug 2019 05:58:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cd0435058f21e8c3@google.com> Subject: KASAN: use-after-free Read in __pm_runtime_resume From: syzbot To: andreyknvl@google.com, gregkh@linuxfoundation.org, len.brown@intel.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, pavel@ucw.cz, rjw@rjwysocki.net, 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=146071b4600000 kernel config: https://syzkaller.appspot.com/x/.config?x=792eb47789f57810 dashboard link: https://syzkaller.appspot.com/bug?extid=b156665cf4d1b5e00c76 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+b156665cf4d1b5e00c76@syzkaller.appspotmail.com ================================================================== BUG: KASAN: use-after-free in __pm_runtime_resume+0x162/0x180 drivers/base/power/runtime.c:1069 Read of size 1 at addr ffff8881c775b671 by task syz-executor.4/5918 CPU: 1 PID: 5918 Comm: syz-executor.4 Not tainted 5.3.0-rc2+ #24 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 __pm_runtime_resume+0x162/0x180 drivers/base/power/runtime.c:1069 pm_runtime_get_sync include/linux/pm_runtime.h:226 [inline] usb_autopm_get_interface+0x1b/0x50 drivers/usb/core/driver.c:1707 usbhid_power+0x7c/0xe0 drivers/hid/usbhid/hid-core.c:1234 hid_hw_power include/linux/hid.h:1038 [inline] hidraw_open+0x20d/0x740 drivers/hid/hidraw.c:282 chrdev_open+0x219/0x5c0 fs/char_dev.c:414 do_dentry_open+0x494/0x1120 fs/open.c:797 do_last fs/namei.c:3416 [inline] path_openat+0x1430/0x3f50 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3c0/0x580 fs/open.c:1089 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413711 Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fa3309ef7a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000413711 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fa3309ef850 RBP: 000000000075bf20 R08: 000000000000000f R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007fa3309f06d4 R13: 00000000004c8c02 R14: 00000000004dfa80 R15: 00000000ffffffff Allocated by task 103: 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 103: 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 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417 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 ffff8881c775b300 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 881 bytes inside of 2048-byte region [ffff8881c775b300, ffff8881c775bb00) The buggy address belongs to the page: page:ffffea00071dd600 refcount:1 mapcount:0 mapping:ffff8881da00c000 index:0x0 compound_mapcount: 0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 ffffea0007541a00 0000000300000003 ffff8881da00c000 raw: 0000000000000000 00000000000f000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c775b500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c775b580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb > ffff8881c775b600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881c775b680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c775b700: 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.