sh: fix copy_from_user()
Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@ -151,7 +151,10 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
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__kernel_size_t __copy_size = (__kernel_size_t) n;
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if (__copy_size && __access_ok(__copy_from, __copy_size))
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return __copy_user(to, from, __copy_size);
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__copy_size = __copy_user(to, from, __copy_size);
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if (unlikely(__copy_size))
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memset(to + (n - __copy_size), 0, __copy_size);
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return __copy_size;
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}
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