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commit 8475d8fe21ec9c7eb2faca555fbc5b68cf0d2597 upstream. The KERNEL_INITIAL_ORDER value defines the initial size (usually 32 or 64 MB) of the page table during bootup. Up until now the whole area was initialized with PTE entries, but there was no check if we filled too many entries. Change the code to fill up with so many entries that the "_end" symbol can be reached by the kernel, but not more entries than actually fit into the initial PTE tables. Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulrich Hecht <uli@kernel.org>