From mboxrd@z Thu Jan 1 00:00:00 1970 From: matthew.leach@arm.com (Matthew Leach) Date: Thu, 6 Sep 2012 14:35:03 +0100 Subject: [RFC PATCH 2/2] ARM: kexec: Check segment memory addresses In-Reply-To: <1346938503-18142-1-git-send-email-matthew.leach@arm.com> References: <1346938503-18142-1-git-send-email-matthew.leach@arm.com> Message-ID: <1346938503-18142-3-git-send-email-matthew.leach@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Ensure that the memory regions that are set within the segments correspond to physical contiguous memory regions. Cc: Simon Horman Reviewed-by: Will Deacon Signed-off-by: Matthew Leach --- arch/arm/kernel/machine_kexec.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index a6bbc0f..524139a 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -42,6 +43,12 @@ int machine_kexec_prepare(struct kimage *image) for (i = 0; i < image->nr_segments; i++) { current_segment = &image->segment[i]; + err = memblock_is_region_memory(current_segment->mem, + current_segment->memsz); + if (err) + return - EINVAL; + + err = get_user(header, (__be32*)current_segment->buf); if (err) return err; -- 1.7.12