x86: uaccess_64: fix return value in __copy_from_user()
__copy_from_user() will return invalid value 16 when it fails to access user space and the size is 10. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -46,7 +46,7 @@ int __copy_from_user(void *dst, const void __user *src, unsigned size)
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return ret;
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case 10:
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__get_user_asm(*(u64 *)dst, (u64 __user *)src,
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ret, "q", "", "=r", 16);
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ret, "q", "", "=r", 10);
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if (unlikely(ret))
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return ret;
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__get_user_asm(*(u16 *)(8 + (char *)dst),
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