Message-ID: <CAAeHK+yqN-NP=ScDtFvR8pa60LG=KYdpywPEFD8zF-JSjh6W=w@mail.gmail.com>
Date:   Mon, 11 Sep 2017 19:27:21 +0200
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Cameron Gutman <aicommander@...il.com>,
        Benjamin Valentin <benpicco@...glemail.com>,
        Pavel Rojtberg <rojtberg@...il.com>,
        Daniel Tobias <dan.g.tob@...il.com>,
        linux-input@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        Kostya Serebryany <kcc@...gle.com>,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: usb/joystick: warnings in xpad_start_input and xpad_try_sending_next_out_packet

On Mon, Sep 11, 2017 at 2:26 PM, Andrey Konovalov <andreyknvl@...gle.com> wrote:
> Hi!
>
> I've got the following crashes while fuzzing the kernel with syzkaller.
>
> On commit 81a84ad3cb5711cec79f4dd53a4ce026b092c432 (Sep 3).

Also attaching my .config

>
> usb 1-1: BOGUS urb xfer, pipe 1 != type 3
> WARNING: CPU: 1 PID: 2574 at drivers/usb/core/urb.c:449
> usb_submit_urb+0xf8a/0x11d0
> Modules linked in:
> CPU: 1 PID: 2574 Comm: kworker/1:2 Not tainted 4.13.0+ #88
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
> Workqueue: usb_hub_wq hub_event
> task: ffff880067ec9a00 task.stack: ffff880067988000
> RIP: 0010:usb_submit_urb+0xf8a/0x11d0 drivers/usb/core/urb.c:448
> RSP: 0018:ffff88006798e0b0 EFLAGS: 00010082
> RAX: 0000000000000029 RBX: ffff88006b9ca200 RCX: 0000000000000000
> RDX: 0000000000000029 RSI: ffff88006c915c78 RDI: ffffed000cf31c08
> RBP: ffff88006798e1b0 R08: fffffbfff0fe00ff R09: fffffbfff0fe00ff
> R10: 0000000000000001 R11: fffffbfff0fe00fe R12: 1ffff1000cf31c1d
> R13: 0000000000000003 R14: 0000000000000001 R15: ffff88006b164798
> FS:  0000000000000000(0000) GS:ffff88006c900000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fde04686518 CR3: 000000006a539000 CR4: 00000000000006e0
> Call Trace:
>  xpad_try_sending_next_out_packet+0xe1/0x1d0 drivers/input/joystick/xpad.c:1000
>  xpad_send_led_command drivers/input/joystick/xpad.c:1372
>  xpad_led_set+0x465/0x6e0 drivers/input/joystick/xpad.c:1392
>  __led_set_brightness drivers/leds/led-core.c:34
>  led_set_brightness_nopm+0x53/0x100 drivers/leds/led-core.c:261
>  led_set_brightness_nosleep+0x17f/0x220 drivers/leds/led-core.c:278
>  led_set_brightness+0xfe/0x130 drivers/leds/led-core.c:253
>  xpad_identify_controller drivers/input/joystick/xpad.c:1383
>  xpad_led_probe drivers/input/joystick/xpad.c:1426
>  xpad_init_input+0xd40/0xfe0 drivers/input/joystick/xpad.c:1667
>  xpad_probe+0x13d4/0x1e00 drivers/input/joystick/xpad.c:1811
>  usb_probe_interface+0x351/0x8d0 drivers/usb/core/driver.c:361
>  really_probe drivers/base/dd.c:385
>  driver_probe_device+0x610/0xa00 drivers/base/dd.c:529
>  __device_attach_driver+0x230/0x290 drivers/base/dd.c:625
>  bus_for_each_drv+0x15e/0x210 drivers/base/bus.c:463
>  __device_attach+0x269/0x3c0 drivers/base/dd.c:682
>  device_initial_probe+0x1f/0x30 drivers/base/dd.c:729
>  bus_probe_device+0x1da/0x280 drivers/base/bus.c:523
>  device_add+0xcf9/0x1640 drivers/base/core.c:1703
>  usb_set_configuration+0x1064/0x1890 drivers/usb/core/message.c:1932
>  generic_probe+0x73/0xe0 drivers/usb/core/generic.c:174
>  usb_probe_device+0xaf/0xe0 drivers/usb/core/driver.c:266
>  really_probe drivers/base/dd.c:385
>  driver_probe_device+0x610/0xa00 drivers/base/dd.c:529
>  __device_attach_driver+0x230/0x290 drivers/base/dd.c:625
>  bus_for_each_drv+0x15e/0x210 drivers/base/bus.c:463
>  __device_attach+0x269/0x3c0 drivers/base/dd.c:682
>  device_initial_probe+0x1f/0x30 drivers/base/dd.c:729
>  bus_probe_device+0x1da/0x280 drivers/base/bus.c:523
>  device_add+0xcf9/0x1640 drivers/base/core.c:1703
>  usb_new_device+0x7b8/0x1020 drivers/usb/core/hub.c:2457
>  hub_port_connect drivers/usb/core/hub.c:4890
>  hub_port_connect_change drivers/usb/core/hub.c:4996
>  port_event drivers/usb/core/hub.c:5102
>  hub_event+0x23c8/0x37c0 drivers/usb/core/hub.c:5182
>  process_one_work+0x9fb/0x1570 kernel/workqueue.c:2097
>  worker_thread+0x1e4/0x1350 kernel/workqueue.c:2231
>  kthread+0x324/0x3f0 kernel/kthread.c:231
>  ret_from_fork+0x25/0x30 arch/x86/entry/entry_64.S:425
> Code: 48 8b 85 30 ff ff ff 48 8d b8 98 00 00 00 e8 8e 93 07 ff 45 89
> e8 44 89 f1 4c 89 fa 48 89 c6 48 c7 c7 a0 e5 55 86 e8 20 08 8f fd <0f>
> ff e9 9b f7 ff ff e8 4a 04 d6 fd e9 80 f7 ff ff e8 60 11 a6
> ---[ end trace 5b20fc700a17a457 ]---
> usb 1-1: BOGUS urb xfer, pipe 1 != type 3
>
>
>
> usb 2-1: BOGUS urb xfer, pipe 1 != type 3
> ------------[ cut here ]------------
> WARNING: CPU: 3 PID: 7797 at drivers/usb/core/urb.c:449
> usb_submit_urb+0xf8a/0x11d0 drivers/usb/core/urb.c:448
> Kernel panic - not syncing: panic_on_warn set ...
>
> CPU: 3 PID: 7797 Comm: syz-executor0 Not tainted 4.13.0+ #86
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
> Call Trace:
>  __dump_stack lib/dump_stack.c:16 [inline]
>  dump_stack+0x192/0x22c lib/dump_stack.c:52
>  panic+0x1cb/0x3b2 kernel/panic.c:180
>  __warn+0x1c9/0x1de kernel/panic.c:541
>  report_bug+0x211/0x2d0 lib/bug.c:183
>  fixup_bug+0x45/0x90 arch/x86/kernel/traps.c:190
>  do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
>  do_trap+0x265/0x390 arch/x86/kernel/traps.c:273
>  do_error_trap+0x149/0x3e0 arch/x86/kernel/traps.c:310
>  do_invalid_op+0x20/0x30 arch/x86/kernel/traps.c:323
>  invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:846
> RIP: 0010:usb_submit_urb+0xf8a/0x11d0 drivers/usb/core/urb.c:448
> RSP: 0018:ffff88006ab26150 EFLAGS: 00010282
> RAX: 0000000000000029 RBX: ffff88003c586400 RCX: 0000000000000000
> RDX: 0000000000000029 RSI: ffffffff812b6153 RDI: ffffed000d564c1c
> RBP: ffff88006ab26250 R08: fffffbfff0fe00ff R09: fffffbfff0fe00ff
> R10: ffff88006a311e80 R11: fffffbfff0fe00fe R12: 1ffff1000d564c31
> R13: 0000000000000003 R14: 0000000000000001 R15: ffff88006c9bfa38
>  xpad_start_input+0x43/0x100 drivers/input/joystick/xpad.c:1457
>  xpad_open+0x3c/0x50 drivers/input/joystick/xpad.c:1542
>  input_open_device+0x17a/0x250 drivers/input/input.c:603
>  evbug_connect+0x10f/0x260 drivers/input/evbug.c:65
>  input_attach_handler+0x59a/0x740 drivers/input/input.c:1002
>  input_register_device+0xcb8/0xf90 drivers/input/input.c:2159
>  xpad_init_input+0xaad/0xfe0 drivers/input/joystick/xpad.c:1671
>  xpad_probe+0x13d4/0x1e00 drivers/input/joystick/xpad.c:1811
>  usb_probe_interface+0x351/0x8d0 drivers/usb/core/driver.c:361
>  really_probe drivers/base/dd.c:385 [inline]
>  driver_probe_device+0x610/0xa00 drivers/base/dd.c:529
>  __device_attach_driver+0x230/0x290 drivers/base/dd.c:625
>  bus_for_each_drv+0x15e/0x210 drivers/base/bus.c:463
>  __device_attach+0x269/0x3c0 drivers/base/dd.c:682
>  device_initial_probe+0x1f/0x30 drivers/base/dd.c:729
>  bus_probe_device+0x1da/0x280 drivers/base/bus.c:523
>  device_add+0xcf9/0x1640 drivers/base/core.c:1703
>  usb_set_configuration+0x1064/0x1890 drivers/usb/core/message.c:1932
>  generic_probe+0x73/0xe0 drivers/usb/core/generic.c:174
>  usb_probe_device+0xaf/0xe0 drivers/usb/core/driver.c:266
>  really_probe drivers/base/dd.c:385 [inline]
>  driver_probe_device+0x610/0xa00 drivers/base/dd.c:529
>  __device_attach_driver+0x230/0x290 drivers/base/dd.c:625
>  bus_for_each_drv+0x15e/0x210 drivers/base/bus.c:463
>  __device_attach+0x269/0x3c0 drivers/base/dd.c:682
>  device_initial_probe+0x1f/0x30 drivers/base/dd.c:729
>  bus_probe_device+0x1da/0x280 drivers/base/bus.c:523
>  device_add+0xcf9/0x1640 drivers/base/core.c:1703
>  usb_new_device+0x7b8/0x1020 drivers/usb/core/hub.c:2457
>  hub_port_connect drivers/usb/core/hub.c:4890 [inline]
>  hub_port_connect_change drivers/usb/core/hub.c:4996 [inline]
>  port_event drivers/usb/core/hub.c:5102 [inline]

Download attachment ".config" of type "application/octet-stream" (151570 bytes)

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