Kernel oops on usbhid_submit_report

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Hello,

I am getting the following kernel oops (http://paste.debian.net/182812/)
sporadically. Kernel version is 3.2.14.

Code basically does the following:

 ioctl(fd,HIDIOCSUSAGES, &ref_multi_u);
 ioctl(fd,HIDIOCSREPORT, &rep_info_u);

Here are some notes:

 1. Happens in implement() function called by hid_output_report.
 2. Did an ftrace and found the HIDIOCSREPORT call takes 5.3ms to
 complete. Is it suppose to take this long?
 3. Very hard to reproduce. Seems to me like a race condition?

Thanks,
Amit

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