syzbot

pvrusb2: Invalid read control endpoint
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URB ffff88802a8fb900 submitted while active
WARNING: drivers/usb/core/urb.c:380 at usb_submit_urb+0x15a0/0x1970 drivers/usb/core/urb.c:380, CPU#3: pvrusb2-context/2490
Modules linked in:
CPU: 3 UID: 0 PID: 2490 Comm: pvrusb2-context Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:usb_submit_urb+0x15a3/0x1970 drivers/usb/core/urb.c:380
Code: 4b 03 00 00 48 8b 04 24 48 8b 90 b0 00 00 00 eb 91 bb ed ff ff ff e9 07 f3 ff ff e8 f7 b2 a8 fa 48 8d 3d 90 41 7e 09 48 89 de <67> 48 0f b9 3a bb f0 ff ff ff e9 e9 f2 ff ff e8 d9 b2 a8 fa 0f 1f
RSP: 0018:ffffc9000e1ded10 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88802a8fb900 RCX: ffffffff880203bf
RDX: ffff88802e354980 RSI: ffff88802a8fb900 RDI: ffffffff90947750
RBP: 0000000000000005 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88802e3554b0 R12: 0000000000000000
R13: 00000000c0008200 R14: ffff8880315fb000 R15: ffff88802d831628
FS:  0000000000000000(0000) GS:ffff8880d6bf5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd28cdc3a0 CR3: 000000003a0df000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 pvr2_send_request_ex+0x7eb/0x1ef0 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:3676
 pvr2_send_request+0x3a/0x50 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:3819
 pvr2_i2c_read+0x203/0x6d0 drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c:130
 pvr2_i2c_basic_op+0xcf/0xf0 drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c:172
 pvr2_i2c_xfer+0x380/0xfd0 drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c:445
 __i2c_transfer+0x6b6/0x2100 drivers/i2c/i2c-core-base.c:2261
 i2c_smbus_xfer_emulated+0x230/0x1210 drivers/i2c/i2c-core-smbus.c:470
 __i2c_smbus_xfer drivers/i2c/i2c-core-smbus.c:608 [inline]
 __i2c_smbus_xfer+0x836/0xf60 drivers/i2c/i2c-core-smbus.c:554
 i2c_smbus_xfer drivers/i2c/i2c-core-smbus.c:546 [inline]
 i2c_smbus_xfer+0x200/0x3c0 drivers/i2c/i2c-core-smbus.c:536
 i2c_smbus_read_byte_data+0x135/0x1e0 drivers/i2c/i2c-core-smbus.c:143
 saa711x_detect_chip drivers/media/i2c/saa7115.c:1710 [inline]
 saa711x_probe+0x234/0x20b0 drivers/media/i2c/saa7115.c:1816
 i2c_device_probe+0x66e/0xd90 drivers/i2c/i2c-core-base.c:592
 call_driver_probe drivers/base/dd.c:581 [inline]
 really_probe+0x241/0xb20 drivers/base/dd.c:659
 __driver_probe_device+0x1de/0x470 drivers/base/dd.c:801
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831
 __device_attach_driver+0x1df/0x350 drivers/base/dd.c:959
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4e0 drivers/base/dd.c:1031
 device_initial_probe+0xaa/0xc0 drivers/base/dd.c:1086
 bus_probe_device+0x64/0x150 drivers/base/bus.c:574
 device_add+0x116e/0x1980 drivers/base/core.c:3689
 i2c_new_client_device+0x660/0xed0 drivers/i2c/i2c-core-base.c:1019
 v4l2_i2c_new_subdev_board+0xb6/0x300 drivers/media/v4l2-core/v4l2-i2c.c:81
 v4l2_i2c_new_subdev+0x14f/0x1c0 drivers/media/v4l2-core/v4l2-i2c.c:136
 pvr2_hdw_load_subdev drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2022 [inline]
 pvr2_hdw_load_modules drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2074 [inline]
 pvr2_hdw_setup_low drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2155 [inline]
 pvr2_hdw_setup drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2261 [inline]
 pvr2_hdw_initialize+0x28d0/0x4510 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2338
 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:111 [inline]
 pvr2_context_thread_func+0x253/0x9b0 drivers/media/usb/pvrusb2/pvrusb2-context.c:158
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess):
   0:	4b 03 00             	rex.WXB add (%r8),%rax
   3:	00 48 8b             	add    %cl,-0x75(%rax)
   6:	04 24                	add    $0x24,%al
   8:	48 8b 90 b0 00 00 00 	mov    0xb0(%rax),%rdx
   f:	eb 91                	jmp    0xffffffa2
  11:	bb ed ff ff ff       	mov    $0xffffffed,%ebx
  16:	e9 07 f3 ff ff       	jmp    0xfffff322
  1b:	e8 f7 b2 a8 fa       	call   0xfaa8b317
  20:	48 8d 3d 90 41 7e 09 	lea    0x97e4190(%rip),%rdi        # 0x97e41b7
  27:	48 89 de             	mov    %rbx,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	bb f0 ff ff ff       	mov    $0xfffffff0,%ebx
  34:	e9 e9 f2 ff ff       	jmp    0xfffff322
  39:	e8 d9 b2 a8 fa       	call   0xfaa8b317
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)