crashes in clear_user_page

[Anton Blanchard]

> Segment table contents of cpu 5
> 000 c000000000000090 00006a99b4b14000
> 001 e000000000000090 0000a708a8242000
> 002 d000000000000090 000008d12e6ab000
> 003 00000080000000b0 0000b6c9b710a000
> 004 0000008000000030 0000c50de9452000
> 008 00000000100000b0 00008de66f10a000
> 024 c000000030000090 0000a12fdcb14000
> 032 0000000040000030 00005111b3f4b000
> 064 e000000080000090 00008dee68242000
> 120 c0000000f00000b0 00007b887cb14000
                    ^
ks bit set for kernel segment. This proves:

a) I am right about the cause of the oops, but also
b) I cant write kernel patches

> 128 c000000100000090 0000386534b14000
> 136 c000000110000090 0000f541ecb14000
> 144 c000000120000090 0000b21ea4b14000
> 152 c000000130000090 00006efb5cb14000
> 160 c000000140000090 00002bd814b14000
> 168 c000000150000090 0000e8b4ccb14000
> 176 c000000160000090 0000a59184b14000
> 184 c000000170000090 0000626e3cb14000
> 248 000001fff00000b0 0000ab2cff10a000

Anton

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