From: Laura Abbott <lauraa@codeaurora.org>
Date: Fri, 20 Jun 2014 03:13:38 +0000 (-0700)
Subject: of: Check for phys_addr_t overflows in early_init_dt_add_memory_arch
X-Git-Tag: omap-for-v3.16/fixes-rc4~11^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a67a6ed15513541579d38bcbd127e7be170710e5;p=pandora-kernel.git

of: Check for phys_addr_t overflows in early_init_dt_add_memory_arch

The common early_init_dt_add_memory_arch takes the base and size
of a memory region as u64 types. The function never checks if
the base and size can actually fit in a phys_addr_t which may
be smaller than 64-bits. This may result in incorrect memory
being passed to memblock_add if the memory falls outside the
range of phys_addr_t. Add range checks for the base and size if
phys_addr_t is smaller than u64.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
---

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