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From: syzbot <syzbot+7c2bb71996f95a82524c@syzkaller.appspotmail.com>
To: glider@google.com, gregkh@linuxfoundation.org,
	gustavo@embeddedor.com, linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: KMSAN: kernel-usb-infoleak in hid_submit_ctrl
Date: Thu, 19 Sep 2019 11:19:07 -0700	[thread overview]
Message-ID: <0000000000003e64aa0592ebfde1@google.com> (raw)

Hello,

syzbot found the following crash on:

HEAD commit:    014077b5 DO-NOT-SUBMIT: usb-fuzzer: main usb gadget fuzzer..
git tree:       https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=123e42a5600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=f03c659d0830ab8d
dashboard link: https://syzkaller.appspot.com/bug?extid=7c2bb71996f95a82524c
compiler:       clang version 9.0.0 (/home/glider/llvm/clang  
80fee25776c2fb61e74c1ecb1a523375c2500b69)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11b0411a600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12d1ee01600000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7c2bb71996f95a82524c@syzkaller.appspotmail.com

microsoft 0003:045E:07DA.0002: unknown main item tag 0x0
microsoft 0003:045E:07DA.0002: unknown main item tag 0x0
==================================================================
BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x7ef/0x1f50  
drivers/usb/core/urb.c:405
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.3.0-rc7+ #0
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+0x191/0x1f0 lib/dump_stack.c:113
  kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109
  kmsan_internal_check_memory+0x7be/0x8d0 mm/kmsan/kmsan.c:553
  kmsan_handle_urb+0x28/0x40 mm/kmsan/kmsan_hooks.c:621
  usb_submit_urb+0x7ef/0x1f50 drivers/usb/core/urb.c:405
  hid_submit_ctrl+0xb5f/0x1160 drivers/hid/usbhid/hid-core.c:416
  usbhid_restart_ctrl_queue+0x355/0x510 drivers/hid/usbhid/hid-core.c:258
  __usbhid_submit_report drivers/hid/usbhid/hid-core.c:601 [inline]
  usbhid_submit_report+0x924/0x1200 drivers/hid/usbhid/hid-core.c:638
  usbhid_request+0xc6/0xe0 drivers/hid/usbhid/hid-core.c:1253
  hid_hw_request include/linux/hid.h:1053 [inline]
  __hidinput_change_resolution_multipliers+0x132/0x6a0  
drivers/hid/hid-input.c:1566
  hidinput_change_resolution_multipliers drivers/hid/hid-input.c:1604  
[inline]
  hidinput_connect+0x2b9a/0x4220 drivers/hid/hid-input.c:1914
  hid_connect+0x582/0x15c0 drivers/hid/hid-core.c:1877
  hid_hw_start+0x141/0x230 drivers/hid/hid-core.c:1981
  ms_probe+0x39b/0x8f0 drivers/hid/hid-microsoft.c:388
  hid_device_probe+0x490/0x820 drivers/hid/hid-core.c:2209
  really_probe+0xd08/0x1dc0 drivers/base/dd.c:548
  driver_probe_device+0x1ba/0x510 drivers/base/dd.c:709
  __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:816
  bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
  __device_attach+0x489/0x750 drivers/base/dd.c:882
  device_initial_probe+0x4a/0x60 drivers/base/dd.c:929
  bus_probe_device+0x131/0x390 drivers/base/bus.c:514
  device_add+0x25b5/0x2df0 drivers/base/core.c:2165
  hid_add_device+0x132b/0x1470 drivers/hid/hid-core.c:2365
  usbhid_probe+0x152b/0x1880 drivers/hid/usbhid/hid-core.c:1386
  usb_probe_interface+0xd19/0x1310 drivers/usb/core/driver.c:361
  really_probe+0x1373/0x1dc0 drivers/base/dd.c:552
  driver_probe_device+0x1ba/0x510 drivers/base/dd.c:709
  __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:816
  bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
  __device_attach+0x489/0x750 drivers/base/dd.c:882
  device_initial_probe+0x4a/0x60 drivers/base/dd.c:929
  bus_probe_device+0x131/0x390 drivers/base/bus.c:514
  device_add+0x25b5/0x2df0 drivers/base/core.c:2165
  usb_set_configuration+0x309f/0x3710 drivers/usb/core/message.c:2027
  generic_probe+0xe7/0x280 drivers/usb/core/generic.c:210
  usb_probe_device+0x146/0x200 drivers/usb/core/driver.c:266
  really_probe+0x1373/0x1dc0 drivers/base/dd.c:552
  driver_probe_device+0x1ba/0x510 drivers/base/dd.c:709
  __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:816
  bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
  __device_attach+0x489/0x750 drivers/base/dd.c:882
  device_initial_probe+0x4a/0x60 drivers/base/dd.c:929
  bus_probe_device+0x131/0x390 drivers/base/bus.c:514
  device_add+0x25b5/0x2df0 drivers/base/core.c:2165
  usb_new_device+0x23e5/0x2fb0 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+0x581d/0x72f0 drivers/usb/core/hub.c:5441
  process_one_work+0x1572/0x1ef0 kernel/workqueue.c:2269
  process_scheduled_works kernel/workqueue.c:2331 [inline]
  worker_thread+0x189c/0x2460 kernel/workqueue.c:2417
  kthread+0x4b5/0x4f0 kernel/kthread.c:256
  ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355

Uninit was created at:
  kmsan_save_stack_with_flags mm/kmsan/kmsan.c:189 [inline]
  kmsan_internal_poison_shadow+0x58/0xb0 mm/kmsan/kmsan.c:148
  kmsan_slab_alloc+0xaa/0x120 mm/kmsan/kmsan_hooks.c:175
  slab_alloc_node mm/slub.c:2790 [inline]
  slab_alloc mm/slub.c:2799 [inline]
  __kmalloc+0x28e/0x430 mm/slub.c:3830
  kmalloc include/linux/slab.h:557 [inline]
  hcd_buffer_alloc+0x391/0x510 drivers/usb/core/buffer.c:132
  usb_alloc_coherent+0x11a/0x190 drivers/usb/core/usb.c:910
  hid_alloc_buffers drivers/hid/usbhid/hid-core.c:851 [inline]
  usbhid_start+0xf60/0x3970 drivers/hid/usbhid/hid-core.c:1075
  hid_hw_start+0x9a/0x230 drivers/hid/hid-core.c:1976
  ms_probe+0x39b/0x8f0 drivers/hid/hid-microsoft.c:388
  hid_device_probe+0x490/0x820 drivers/hid/hid-core.c:2209
  really_probe+0xd08/0x1dc0 drivers/base/dd.c:548
  driver_probe_device+0x1ba/0x510 drivers/base/dd.c:709
  __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:816
  bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
  __device_attach+0x489/0x750 drivers/base/dd.c:882
  device_initial_probe+0x4a/0x60 drivers/base/dd.c:929
  bus_probe_device+0x131/0x390 drivers/base/bus.c:514
  device_add+0x25b5/0x2df0 drivers/base/core.c:2165
  hid_add_device+0x132b/0x1470 drivers/hid/hid-core.c:2365
  usbhid_probe+0x152b/0x1880 drivers/hid/usbhid/hid-core.c:1386
  usb_probe_interface+0xd19/0x1310 drivers/usb/core/driver.c:361
  really_probe+0x1373/0x1dc0 drivers/base/dd.c:552
  driver_probe_device+0x1ba/0x510 drivers/base/dd.c:709
  __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:816
  bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
  __device_attach+0x489/0x750 drivers/base/dd.c:882
  device_initial_probe+0x4a/0x60 drivers/base/dd.c:929
  bus_probe_device+0x131/0x390 drivers/base/bus.c:514
  device_add+0x25b5/0x2df0 drivers/base/core.c:2165
  usb_set_configuration+0x309f/0x3710 drivers/usb/core/message.c:2027
  generic_probe+0xe7/0x280 drivers/usb/core/generic.c:210
  usb_probe_device+0x146/0x200 drivers/usb/core/driver.c:266
  really_probe+0x1373/0x1dc0 drivers/base/dd.c:552
  driver_probe_device+0x1ba/0x510 drivers/base/dd.c:709
  __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:816
  bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
  __device_attach+0x489/0x750 drivers/base/dd.c:882
  device_initial_probe+0x4a/0x60 drivers/base/dd.c:929
  bus_probe_device+0x131/0x390 drivers/base/bus.c:514
  device_add+0x25b5/0x2df0 drivers/base/core.c:2165
  usb_new_device+0x23e5/0x2fb0 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+0x581d/0x72f0 drivers/usb/core/hub.c:5441
  process_one_work+0x1572/0x1ef0 kernel/workqueue.c:2269
  process_scheduled_works kernel/workqueue.c:2331 [inline]
  worker_thread+0x189c/0x2460 kernel/workqueue.c:2417
  kthread+0x4b5/0x4f0 kernel/kthread.c:256
  ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355

Bytes 0-4095 of 4096 are uninitialized
Memory access of size 4096 starts at ffff888108f43000
==================================================================


---
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.

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syzbot can test patches for this bug, for details see:
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             reply	other threads:[~2019-09-19 18:19 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-19 18:19 syzbot [this message]
2019-09-19 18:27 ` KMSAN: kernel-usb-infoleak in hid_submit_ctrl Andrey Konovalov

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