ARM: prevent VM_GROWSDOWN mmaps extending below FIRST_USER_ADDRESS
Cc: <stable@vger.kernel.org> Reported-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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Cc: <stable@vger.kernel.org> Reported-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>