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UPSTREAM: arm64: kasan: Use actual memory node when populating the kernel image shadow

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With the 16KB or 64KB page configurations, the generic
vmemmap_populate() implementation warns on potential offnode
page_structs via vmemmap_verify() because the arm64 kasan_init() passes
NUMA_NO_NODE instead of the actual node for the kernel image memory.

Fixes: f9040773b7 ("arm64: move kernel image to base of vmalloc area")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: James Morse <james.morse@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>

Bug: 30369029
Patchset: kaslr-arm64-4.4

(cherry picked from commit 2f76969f2e)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I8985e5b4628a9c7076767d4565f7633635813b5c
This commit is contained in:
Catalin Marinas
2016-03-10 18:30:56 +00:00
committed by Jeff Vander Stoep
parent 391ba6bf3e
commit 1d2e2e3c0f
1 changed files with 2 additions and 1 deletions
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3
arch/arm64/mm/kasan_init.c
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@@ -152,7 +152,8 @@ void __init kasan_init(void)
clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END);
vmemmap_populate(kimg_shadow_start, kimg_shadow_end, NUMA_NO_NODE);
vmemmap_populate(kimg_shadow_start, kimg_shadow_end,
pfn_to_nid(virt_to_pfn(_text)));
/*
* vmemmap_populate() has populated the shadow region that covers the