On 10/17/15 1:20 PM, Rasmus Villemoes wrote:
As far as I can tell, strncpy_from_unsafe never returns -EFAULT. ret
is the result of a __copy_from_user_inatomic(), which is 0 for success
and positive (in this case necessarily 1) for access error - it is
never negative. So we were always returning the length of the,
possibly truncated, destination string.
Signed-off-by: Rasmus Villemoes<[email protected]>
---
Probably not -stable-worthy. I can only find two callers, one of which
ignores the return value.
good catch.
Acked-by: Alexei Starovoitov <[email protected]>
cc-ing original authors where I copy pasted that part from.
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