There is no commit to xf86-drv-intel since July 31, but today or yesterday a log of commits happened in mesa git.
With kernel-4.2rc5/mesa git/xf86-drv-intel git, I can confirm there is no such crash when enable dri3 in driver.
I just update the mesa git and switch driver back to dri2 to verify it's fixed or not.
There is no commit to xf86-drv-intel since July 31, but today or yesterday a log of commits happened in mesa git.
With kernel-4.2rc5/mesa git/xf86-drv-intel git, I can confirm there is no such crash when enable dri3 in driver.
I just update the mesa git and switch driver back to dri2 to verify it's fixed or not.