When communicating with AT90USB1287, at random intervals (1/25 boots) the linux hid_output_field Oopses and kills the communicating thread. The AT90USB1287 microcontroller uses LUFA library for usb/hid communication. It is trigged by a ioctl call from userspace and fails in a kernel paging request. The system is after the oops in a state where no hid commands is sent anymore and only a boot can fix the system. Keywords: usbhid hid Kernel version: Linux version 3.8.13-03081301-generic (apw@gomeisa) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201305311535 SMP Fri May 31 19:44:30 UTC 2013 Oopses: http://paste.debian.net/24305 http://paste.debian.net/24306 http://paste.debian.net/24307 Code: The error is triggered by: ioctl(fd,HIDIOCSUSAGES, &ref_multi_u); ioctl(fd,HIDIOCSREPORT, &rep_info_u); Notes: It is very hard to reproduce so seems like race condition… Any tips to resolve/workaround this issue is appreciated and please let me know if my information is incomplete (This is my first kernel bug report) Andreas Lillebø Holm -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
