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Commit d0bae4a0 authored by JingYi Hou's avatar JingYi Hou Committed by David S. Miller
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net: remove duplicate fetch in sock_getsockopt



In sock_getsockopt(), 'optlen' is fetched the first time from userspace.
'len < 0' is then checked. Then in condition 'SO_MEMINFO', 'optlen' is
fetched the second time from userspace.

If change it between two fetches may cause security problems or unexpected
behaivor, and there is no reason to fetch it a second time.

To fix this, we need to remove the second fetch.

Signed-off-by: default avatarJingYi Hou <houjingyi647@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d0f84d08
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