arm64: compat: Poison the compat sigpage

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Commit 9c698bff66 ("ARM: ensure the signal page contains defined contents")
poisoned the unused portions of the signal page for 32-bit Arm.

Implement the same poisoning for the compat signal page on arm64 rather
than using __GFP_ZERO.

Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20210318170738.7756-6-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Will Deacon 2021-03-18 17:07:38 +00:00 • committed by Catalin Marinas

parent 77ec462536

commit 6e554abd07

1 changed files with 6 additions and 3 deletions

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arch/arm64/kernel/vdso.c

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