From 70b3d237bd7f52d3322c750a358581bf5a267699 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 3 Apr 2019 17:58:39 +0100 Subject: [PATCH] arm64: mm: Ensure we ignore the initrd if it is placed out of range If the initrd payload isn't completely accessible via the linear map, then we print a warning during boot and nobble the virtual address of the payload so that we ignore it later on. Unfortunately, since commit c756c592e442 ("arm64: Utilize phys_initrd_start/phys_initrd_size"), the virtual address isn't initialised until later anyway, so we need to nobble the size of the payload to ensure that we don't try to use it later on. Fixes: c756c592e442 ("arm64: Utilize phys_initrd_start/phys_initrd_size") Reported-by: Pierre Kuo Acked-by: Florian Fainelli Signed-off-by: Will Deacon --- arch/arm64/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 43fa75601b3d..03a8a6888ec0 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -377,7 +377,7 @@ void __init arm64_memblock_init(void) base + size > memblock_start_of_DRAM() + linear_region_size, "initrd not fully accessible via the linear mapping -- please check your bootloader ...\n")) { - initrd_start = 0; + phys_initrd_size = 0; } else { memblock_remove(base, size); /* clear MEMBLOCK_ flags */ memblock_add(base, size); -- 2.30.2