From: Yong Zhang
Current access_ok() will fail even if the address range is
valid when it reaches to the end of TASK_SIZE.
For exampe: addr = 0xf0; size = 16;
the real address range it want to access is 0xf0~0xf;
but addr + size = 0x100 which we will not and can't
From: Yong Zhang yong.zh...@windriver.com
Current access_ok() will fail even if the address range is
valid when it reaches to the end of TASK_SIZE.
For exampe: addr = 0xf0; size = 16;
the real address range it want to access is 0xf0~0xf;
but addr + size = 0x100
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