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Date: Mon, 20 Sep 2010 15:56:54 +0200
From: Mat <jackdachef@...il.com>
To: Jiri Kosina <jkosina@...e.cz>
Cc: Guillaume Chazarain <guichaz@...il.com>,
linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>,
Alan Stern <stern@...land.harvard.edu>,
Oliver Neukum <oliver@...kum.org>, Alan Ott <alan@...nal11.us>,
linux-usb@...r.kernel.org, linux-input@...r.kernel.org,
Andreas Bombe <aeb@...ian.org>,
Alex Riesen <raa.lkml@...il.com>
Subject: Re: [BUG, Regression, bisected] USB mouse causes bug on 1st insert,
ignored on 2nd insert, lsusb stuck at usbdev_open
On Mon, Sep 20, 2010 at 3:25 PM, Jiri Kosina <jkosina@...e.cz> wrote:
> On Mon, 20 Sep 2010, Phil Turmel wrote:
>
>> >>> The USB mouse I use with my laptop is causing a BUG when inserted. It works at that
>> >>> point, but if removed and re-inserted, it is ignored. Also, after the 2nd insert,
>> >>> other USB devices (like my thumb drive) are also ignored.
>> >>>
>> >>> [ 37.450777] BUG: unable to handle kernel NULL pointer dereference at (null)
>> >>> [ 37.451148] IP: [<ffffffff817d0991>] hiddev_open+0xc1/0x220
>> >>> [ 37.452036] PGD 1131a0067 PUD 113036067 PMD 0
>> >>> [ 37.452924] Oops: 0000 [#1] PREEMPT SMP
>> >>> [ 37.453336] last sysfs file: /sys/devices/platform/toshiba_acpi/backlight/toshiba/max_brightness
>> >>> [ 37.453336] CPU 1
>> >>> [ 37.453336] Modules linked in: tpm_infineon iwlagn iwlcore tifm_7xx1 tpm_tis toshiba_bluetooth toshiba_acpi tifm_core pcmcia sdhci_pci yenta_socket sdhci [last unloaded: scsi_wait_scan]
>> >>> [ 37.453336]
>> >>> [ 37.453336] Pid: 3117, comm: hald-probe-hidd Not tainted 2.6.36-rc4-00166-g151b6a5 #28 Portable PC/TECRA A9
>> >>> [ 37.453336] RIP: 0010:[<ffffffff817d0991>] [<ffffffff817d0991>] hiddev_open+0xc1/0x220
>> >
>> > Could please those of you who are able to reproduce the problem (from a
>> > quick test seems that I am not) use 'addr2line' utility to convert the RIP
>> > value (ffffffff817d0991 in this case) to the line number inside of
>> > hiddev_open(), so that we can see whether it's something behind
>> > usbhid_find_interface() causing NULL pointer dereference, or whether it is
>> > intfdata being NULL and thus going to hid->hiddev faults?
[snip]
> --
> Jiri Kosina
> SUSE Labs, Novell Inc.
>
Hi Jiri,
hope that's the information you need - I rebuilt a debug-kernel so if
you need more information, just ask:
ls -l /usr/src/linux-2.6.36-rc4_hiddev/vmlinux
-rwxrwx--- 1 root root 174167283 Sep 20 15:17
/usr/src/linux-2.6.36-rc4_hiddev/vmlinux
wolf ~ # addr2line -e /usr/src/linux-2.6.36-rc4_hiddev/vmlinux -i
ffffffff815a0815
/usr/src/linux/drivers/hid/usbhid/hiddev.c:289
the relevant line is marked "==> if (list->hiddev->exist) {"
code-snip from hiddev.c
******************************************************************************************
/*
* open file op
*/
static int hiddev_open(struct inode *inode, struct file *file)
{
struct hiddev_list *list;
struct usb_interface *intf;
struct hid_device *hid;
struct hiddev *hiddev;
int res;
intf = usb_find_interface(&hiddev_driver, iminor(inode));
if (!intf)
return -ENODEV;
hid = usb_get_intfdata(intf);
hiddev = hid->hiddev;
if (!(list = kzalloc(sizeof(struct hiddev_list), GFP_KERNEL)))
return -ENOMEM;
mutex_init(&list->thread_lock);
list->hiddev = hiddev;
file->private_data = list;
/*
* no need for locking because the USB major number
* is shared which usbcore guards against disconnect
*/
==> if (list->hiddev->exist) {
if (!list->hiddev->open++) {
res = usbhid_open(hiddev->hid);
if (res < 0) {
res = -EIO;
goto bail;
}
}
} else {
res = -ENODEV;
goto bail;
}
spin_lock_irq(&list->hiddev->list_lock);
list_add_tail(&list->node, &hiddev->list);
spin_unlock_irq(&list->hiddev->list_lock);
if (!list->hiddev->open++)
if (list->hiddev->exist) {
struct hid_device *hid = hiddev->hid;
res = usbhid_get_power(hid);
if (res < 0) {
res = -EIO;
goto bail;
}
usbhid_open(hid);
}
return 0;
bail:
file->private_data = NULL;
kfree(list);
return res;
}
code-snip from hiddev.c
******************************************************************************************
below is the new error-message after inserting the transmitter:
[ 80.363970] hub 1-1:1.0: state 7 ports 6 chg 0000 evt 0008
[ 80.364273] hub 1-1:1.0: port 3, status 0101, change 0001, 12 Mb/s
[ 80.468649] hub 1-1:1.0: debounce: port 3: total 100ms stable 100ms
status 0x101
[ 80.479626] hub 1-1:1.0: port 3 not reset yet, waiting 10ms
[ 80.541530] usb 1-1.3: new low speed USB device using ehci_hcd and address 4
[ 80.553453] hub 1-1:1.0: port 3 not reset yet, waiting 10ms
[ 80.631103] usb 1-1.3: skipped 1 descriptor after interface
[ 80.631109] usb 1-1.3: skipped 1 descriptor after interface
[ 80.631682] usb 1-1.3: default language 0x0409
[ 80.633716] usb 1-1.3: udev 4, busnum 1, minor = 3
[ 80.633721] usb 1-1.3: New USB device found, idVendor=046d, idProduct=c521
[ 80.633724] usb 1-1.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[ 80.633728] usb 1-1.3: Product: USB Receiver
[ 80.633730] usb 1-1.3: Manufacturer: Logitech
[ 80.633856] usb 1-1.3: usb_probe_device
[ 80.633862] usb 1-1.3: configuration #1 chosen from 1 choice
[ 80.635683] usb 1-1.3: adding 1-1.3:1.0 (config #1, interface 0)
[ 80.635753] usbhid 1-1.3:1.0: usb_probe_interface
[ 80.635758] usbhid 1-1.3:1.0: usb_probe_interface - got id
[ 80.639327] input: Logitech USB Receiver as
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input4
[ 80.639428] usb 1-1.3: link qh8-0e01/ffff8801bce8fbc0 start 4 [1/2 us]
[ 80.639549] generic-usb 0003:046D:C521.0004: input,hidraw2: USB HID
v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:1a.0-1.3/input0
[ 80.639600] usb 1-1.3: adding 1-1.3:1.1 (config #1, interface 1)
[ 80.639657] usbhid 1-1.3:1.1: usb_probe_interface
[ 80.639662] usbhid 1-1.3:1.1: usb_probe_interface - got id
[ 80.646672] input: Logitech USB Receiver as
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.1/input/input5
[ 80.646716] usb 1-1.3: link qh8-0e01/ffff8801bacba1c0 start 5 [1/2 us]
[ 80.646784] drivers/usb/core/file.c: looking for a minor, starting at 0
[ 80.646948] generic-usb 0003:046D:C521.0005: input,hiddev0,hidraw3:
USB HID v1.11 Device [Logitech USB Receiver] on
usb-0000:00:1a.0-1.3/input1
[ 80.647069] drivers/usb/core/inode.c: creating file '004'
[ 80.667098] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 80.667102] IP: [<ffffffff815a0815>] hiddev_open+0xa5/0x1b0
[ 80.667108] PGD 0
[ 80.667110] Oops: 0000 [#1] PREEMPT SMP
[ 80.667112] last sysfs file:
/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input4/capabilities/sw
[ 80.667115] CPU 0
[ 80.667116] Modules linked in: it87 hwmon_vid hwmon e1000e
firewire_ohci firewire_core shpchp wmi i2c_i801 tg3 libphy e1000
scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage ehci_hcd
[ 80.667125]
[ 80.667128] Pid: 5636, comm: hald-probe-hidd Not tainted
2.6.36-rc4_hiddev+ #1 FMP55/ipower G3710
[ 80.667130] RIP: 0010:[<ffffffff815a0815>] [<ffffffff815a0815>]
hiddev_open+0xa5/0x1b0
[ 80.667135] RSP: 0018:ffff8801bffdfca8 EFLAGS: 00010296
[ 80.667137] RAX: 0000000000000000 RBX: ffff8801bad5b180 RCX: 0000000000000000
[ 80.667138] RDX: ffffffff81de0028 RSI: ffffffff81a02dbc RDI: ffff8801bb25c030
[ 80.667140] RBP: ffff8801bb250000 R08: 0000000000000000 R09: ffff8801bb250000
[ 80.667142] R10: ffff8801bfc02be0 R11: dead000000200200 R12: 0000000000000000
[ 80.667143] R13: ffffffff818f24e0 R14: 00000000ffffffed R15: 0000000000000000
[ 80.667146] FS: 00007f3d97180700(0000) GS:ffff880002000000(0000)
knlGS:0000000000000000
[ 80.667148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 80.667149] CR2: 0000000000000000 CR3: 00000001bb872000 CR4: 00000000000006f0
[ 80.667151] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 80.667153] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 80.667155] Process hald-probe-hidd (pid: 5636, threadinfo
ffff8801bffde000, task ffff8801bffbc810)
[ 80.667156] Stack:
[ 80.667157] ffff8801bf52d2c0 ffffffff810d8af0 ffff8801bad5b180
ffffffff818e2b00
[ 80.667160] <0> ffff8801bcdb04d8 ffffffff814dc885 ffff8801bcdb04d8
ffff8801bad5b180
[ 80.667163] <0> ffff8801bf52d2c0 0000000000000000 ffffffff810d9350
ffffffff810d9495
[ 80.667166] Call Trace:
[ 80.667170] [<ffffffff810d8af0>] ? exact_match+0x0/0x10
[ 80.667178] [<ffffffff814dc885>] ? usb_open+0xf5/0x1d0
[ 80.667180] [<ffffffff810d9350>] ? chrdev_open+0x0/0x210
[ 80.667182] [<ffffffff810d9495>] ? chrdev_open+0x145/0x210
[ 80.667186] [<ffffffff810d3b40>] ? __dentry_open.clone.16+0x100/0x320
[ 80.667189] [<ffffffff810e2390>] ? do_last.clone.45+0x3f0/0x690
[ 80.667192] [<ffffffff810e2823>] ? do_filp_open+0x1f3/0x5f0
[ 80.667196] [<ffffffff8160f5ec>] ? move_addr_to_user+0x4c/0x60
[ 80.667198] [<ffffffff816100c2>] ? sys_getsockname+0xe2/0x100
[ 80.667203] [<ffffffff81042b89>] ? get_parent_ip+0x9/0x20
[ 80.667207] [<ffffffff8174b763>] ? _raw_spin_unlock+0x13/0x40
[ 80.667210] [<ffffffff810eda94>] ? alloc_fd+0xe4/0x140
[ 80.667212] [<ffffffff810d4ca6>] ? do_sys_open+0x66/0x130
[ 80.667216] [<ffffffff810026ab>] ? system_call_fastpath+0x16/0x1b
[ 80.667217] Code: c0 00 00 48 c7 c2 28 00 de 81 48 c7 c6 bc 2d a0
81 e8 e0 5a ac ff 4c 89 a5 18 c0 00 00 48 89 ab c0 00 00 00 48 8b 85
18 c0 00 00 <44> 8b 00 45 85 c0 0f 84 df 00 00 00 8b 50 04 8d 4a 01 85
d2 89
[ 80.667237] RIP [<ffffffff815a0815>] hiddev_open+0xa5/0x1b0
[ 80.667240] RSP <ffff8801bffdfca8>
[ 80.667241] CR2: 0000000000000000
[ 80.667242] ---[ end trace 32ae772c738d6ffb ]---
Thanks
Mat
--
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