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 7ABD5C73C46 for ; Tue, 9 Jul 2019 12:27:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 469AD216E3 for ; Tue, 9 Jul 2019 12:27:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727012AbfGIM1K (ORCPT ); Tue, 9 Jul 2019 08:27:10 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:32900 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726892AbfGIM1K (ORCPT ); Tue, 9 Jul 2019 08:27:10 -0400 Received: by mail-io1-f71.google.com with SMTP id 132so20263083iou.0 for ; Tue, 09 Jul 2019 05:27:09 -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=k6gpGJRx5KDVYEIoEkstzb1OJRWoZUjdawWJXyXiKv0=; b=H87tWFi8bDCKnUfKtibTcKtf/4dgZBtKW8c0EAwkNZ4NwOPvQSEQ7hFlGZQwpKJHhc k70R9FtDJCNC2EPzDoiuWyTUXsYt7MQVrcNA/3AAU/lI5xi9Xnh5YzrVYv1G0BiDLhFE p935zzznSufTnZ8i6E09jV0arV354VLGcRWMG3INeY3xyzljDsljpLUqXUaCmP1yOriE ShjpQAB4uGcmgD+NdLlteN9yD3q4a1GCMOXDg6rkyN1SQYSwWzGWjf+sR330ahq5mWpf HmcL9Q8RxLRj/Xwqy/DL0asqUDP2mwrAii/nlr/HCSzSY3yYI4QnPqI6GEEpfbs2ZaYn eWfg== X-Gm-Message-State: APjAAAU5JgocRPpk3V38tV4G1y6qtVY2X5OQ6iNNY+RbiYMeiYDzj8Qg z/6gtYNaiVXW+YJcHFEIAH5EMocSJ9IqlkaaOmjGZ9I66YNd X-Google-Smtp-Source: APXvYqwkDvMd7+7j3ishzaNuwU5KWhtrA1TIgSFDlPt6TKBdgXwqr/hFApQEVK/USzLIzBUIZM5VPhMMqMzZzkAQBbrP3dsIg+zs MIME-Version: 1.0 X-Received: by 2002:a02:ab99:: with SMTP id t25mr27286633jan.113.1562675229088; Tue, 09 Jul 2019 05:27:09 -0700 (PDT) Date: Tue, 09 Jul 2019 05:27:09 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ede4ad058d3ead9e@google.com> Subject: KASAN: use-after-free Write in usb_anchor_resume_wakeups 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 Hello, syzbot found the following crash on: HEAD commit: 7829a896 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=160b9e93a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=f6d4561982f71f63 dashboard link: https://syzkaller.appspot.com/bug?extid=6c355f8d5f11884fa38e 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+6c355f8d5f11884fa38e@syzkaller.appspotmail.com dummy_hcd dummy_hcd.4: no ep configured for urb 0000000001b02d23 xpad 5-1:0.169: xpad_irq_out - usb_submit_urb failed with result -19 ================================================================== BUG: KASAN: use-after-free in register_lock_class+0xeb7/0x1240 kernel/locking/lockdep.c:1156 Write of size 8 at addr ffff8881c7e89b78 by task kworker/0:4/2785 CPU: 0 PID: 2785 Comm: kworker/0:4 Not tainted 5.2.0-rc6+ #13 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 print_address_description+0x67/0x231 mm/kasan/report.c:188 __kasan_report.cold+0x1a/0x32 mm/kasan/report.c:317 kasan_report+0xe/0x20 mm/kasan/common.c:614 register_lock_class+0xeb7/0x1240 kernel/locking/lockdep.c:1156 __lock_acquire+0x11d/0x5340 kernel/locking/lockdep.c:3674 lock_acquire+0x100/0x2b0 kernel/locking/lockdep.c:4303 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 __wake_up_common_lock+0xb0/0x170 kernel/sched/wait.c:121 __usb_unanchor_urb drivers/usb/core/urb.c:154 [inline] usb_anchor_resume_wakeups+0xbe/0xe0 drivers/usb/core/urb.c:148 __usb_hcd_giveback_urb+0x1fa/0x470 drivers/usb/core/hcd.c:1760 usb_hcd_giveback_urb+0x34a/0x400 drivers/usb/core/hcd.c:1823 dummy_timer+0x1022/0x2df4 drivers/usb/gadget/udc/dummy_hcd.c:1965 call_timer_fn+0x15e/0x5e0 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers kernel/time/timer.c:1685 [inline] __run_timers kernel/time/timer.c:1653 [inline] run_timer_softirq+0x597/0x1410 kernel/time/timer.c:1698 __do_softirq+0x219/0x8b0 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17c/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe2/0x480 arch/x86/kernel/apic/apic.c:1068 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline] RIP: 0010:console_unlock+0x9db/0xbf0 kernel/printk/printk.c:2471 Code: 00 89 ee 48 c7 c7 e0 eb f2 86 e8 50 a4 03 00 65 ff 0d 51 56 da 7e e9 11 fa ff ff e8 af 43 15 00 e8 ba 69 1a 00 ff 74 24 30 9d 31 fe ff ff e8 9b 43 15 00 48 8b bc 24 80 00 00 00 c7 05 d9 e6 RSP: 0018:ffff8881aeeff148 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffff11035dc8a24 RDX: 0000000000000000 RSI: ffff8881aee45100 RDI: ffff8881aee45034 RBP: 0000000000000000 R08: ffff8881aee44800 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000004e R13: ffffffff828cb580 R14: ffffffff8726a520 R15: dffffc0000000000 vprintk_emit+0x171/0x3e0 kernel/printk/printk.c:1986 vprintk_func+0x75/0x113 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2046 really_probe.cold+0x69/0x122 drivers/base/dd.c:577 driver_probe_device+0x104/0x210 drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2111 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x660 drivers/base/dd.c:509 driver_probe_device+0x104/0x210 drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2111 usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x1ada/0x3590 drivers/usb/core/hub.c:5432 process_one_work+0x905/0x1570 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x30b/0x410 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Allocated by task 2853: save_stack+0x1b/0x80 mm/kasan/common.c:71 set_track mm/kasan/common.c:79 [inline] __kasan_kmalloc mm/kasan/common.c:489 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:462 kmalloc include/linux/slab.h:547 [inline] kzalloc include/linux/slab.h:742 [inline] xpad_probe+0x24b/0x1b20 drivers/input/joystick/xpad.c:1717 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x660 drivers/base/dd.c:509 driver_probe_device+0x104/0x210 drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2111 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x660 drivers/base/dd.c:509 driver_probe_device+0x104/0x210 drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2111 usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x1ada/0x3590 drivers/usb/core/hub.c:5432 process_one_work+0x905/0x1570 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417 kthread+0x30b/0x410 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Freed by task 107: save_stack+0x1b/0x80 mm/kasan/common.c:71 set_track mm/kasan/common.c:79 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:451 slab_free_hook mm/slub.c:1421 [inline] slab_free_freelist_hook mm/slub.c:1448 [inline] slab_free mm/slub.c:2994 [inline] kfree+0xd7/0x280 mm/slub.c:3949 xpad_disconnect+0x1cb/0x4a3 drivers/input/joystick/xpad.c:1865 usb_unbind_interface+0x1bd/0x8a0 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1081 [inline] device_release_driver_internal+0x404/0x4c0 drivers/base/dd.c:1112 bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:556 device_del+0x460/0xb80 drivers/base/core.c:2274 usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237 usb_disconnect+0x284/0x830 drivers/usb/core/hub.c:2197 hub_port_connect drivers/usb/core/hub.c:4940 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x1409/0x3590 drivers/usb/core/hub.c:5432 process_one_work+0x905/0x1570 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x30b/0x410 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff8881c7e89b00 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 120 bytes inside of 1024-byte region [ffff8881c7e89b00, ffff8881c7e89f00) The buggy address belongs to the page: page:ffffea00071fa200 refcount:1 mapcount:0 mapping:ffff8881dac02a00 index:0x0 compound_mapcount: 0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 dead000000000100 dead000000000200 ffff8881dac02a00 raw: 0000000000000000 00000000000e000e 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c7e89a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c7e89a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc > ffff8881c7e89b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881c7e89b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c7e89c00: 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.