Created attachment 188031 [details]
POC(run as root):
int i = 20;
fd = open("/dev/dri/card0", O_RDONLY);
ioctl(fd, 0x4008642b, &i);
fprintf(stderr, "the errno is %d\n", errno);
You need to describe the details of run time environment. Just run on Ubuntu 14.04?
(In reply to byhankswang from comment #1)
> You need to describe the details of run time environment. Just run on Ubuntu
run as root on Ubuntu 14.04 . I test on Uubntu 14.04 X86_64.
Please file a bug at https://bugs.freedesktop.org/ or firstname.lastname@example.org for a likely better response.