On Mon, 26 Mar 2018, Jonathan Liu wrote:
> > I am experiencing a USB function call hang from userspace with OCHI
> > (full speed USB device) after updating from Linux 4.14.15 to 4.14.24
> > and noticed this commit.
> >
> > Here is the Linux 4.14.24 kernel stack trace (extracted from SysRq+w
> > an
Hi,
On 25 March 2018 at 12:21, Jonathan Liu wrote:
> On 8 February 2018 at 14:55, Jeffy Chen wrote:
>> From: AMAN DEEP
>>
>> There is a race condition between finish_unlinks->finish_urb() function
>> and usb_kill_urb() in ohci controller case. The finish_urb calls
>> spin_unlock(&ohci->lock) be
Hi,
On 25 March 2018 at 12:21, Jonathan Liu wrote:
> Hi,
>
> On 8 February 2018 at 14:55, Jeffy Chen wrote:
>> From: AMAN DEEP
>>
>> There is a race condition between finish_unlinks->finish_urb() function
>> and usb_kill_urb() in ohci controller case. The finish_urb calls
>> spin_unlock(&ohci->
Hi,
On 8 February 2018 at 14:55, Jeffy Chen wrote:
> From: AMAN DEEP
>
> There is a race condition between finish_unlinks->finish_urb() function
> and usb_kill_urb() in ohci controller case. The finish_urb calls
> spin_unlock(&ohci->lock) before usb_hcd_giveback_urb() function call,
> then if du
From: AMAN DEEP
There is a race condition between finish_unlinks->finish_urb() function
and usb_kill_urb() in ohci controller case. The finish_urb calls
spin_unlock(&ohci->lock) before usb_hcd_giveback_urb() function call,
then if during this time, usb_kill_urb is called for another endpoint,
the
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