[PATCH 4.2 099/110] um: Fix kernel mode fault condition

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Richard Weinberger commit 56b88a3bf97a39d3f4f010509917b76a865a6dc8 upstream. We have to exclude memory locations <= PAGE_SIZE from the condition and let the kernel mode fault path catch it.

[PATCH 4.2 099/110] um: Fix kernel mode fault condition

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Richard Weinberger commit 56b88a3bf97a39d3f4f010509917b76a865a6dc8 upstream. We have to exclude memory locations <= PAGE_SIZE from the condition and let the kernel mode fault