Re: [PATCH] mm/mincore: Return EFAULT when passed an invalid address.

[Hugh Dickins]

On Fri, 23 Feb 2007, Joel Becker wrote:

>  	The locking fix to sys_mincore in commit
> 2f77d107050abc14bc393b34bdb7b91cf670c250 returns -ENOMEM when given a
> bad userspace address.  It should return -EFAULT.

No, I think you're getting confused by the way Linus uses access_ok
on the address range given with the access_ok on the vector address.

Before and after, an access_ok failure on the output vector address
gives -EFAULT.  Before and after, an invalid address in the range
to be inspected gives -ENOMEM.

Which is consistent with the other m* system calls: -EFAULT if
arguments are inaccessible, -ENOMEM if address range is invalid.

Hugh
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/