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kasan: fix memory hotplug during boot

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Using module_init() is wrong.  E.g.  ACPI adds and onlines memory before
our memory notifier gets registered.

This makes sure that ACPI memory detected during boot up will not result
in a kernel crash.

Easily reproducible with QEMU, just specify a DIMM when starting up.

Link: http://lkml.kernel.org/r/[email protected]
Fixes: 786a895991 ("kasan: disable memory hotplug")
Signed-off-by: David Hildenbrand <[email protected]>
Acked-by: Andrey Ryabinin <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
David Hildenbrand 2018-05-25 14:48:11 -07:00 • committed by Linus Torvalds
commit 3f19597215
1 changed files with 1 additions and 1 deletions
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2
mm/kasan/kasan.c
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@ -898,5 +898,5 @@ static int __init kasan_memhotplug_init(void)
return 0;
}
module_init(kasan_memhotplug_init);
core_initcall(kasan_memhotplug_init);
#endif