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authorDavid Hildenbrand <david@redhat.com>2018-05-26 00:48:11 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-05-26 04:12:11 +0300
commit3f1959721558a976aaf9c2024d5bc884e6411bf7 (patch)
tree9a1b3752806330c513951c0c5a633ec7f7fff690
parented1596f9ab958dd156a66c9ff1029d3761c1786a (diff)
downloadlinux-3f1959721558a976aaf9c2024d5bc884e6411bf7.tar.xz
kasan: fix memory hotplug during boot
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/20180522100756.18478-3-david@redhat.com Fixes: 786a8959912e ("kasan: disable memory hotplug") Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/kasan/kasan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c
index 721e00837f00..f185455b3406 100644
--- a/mm/kasan/kasan.c
+++ b/mm/kasan/kasan.c
@@ -898,5 +898,5 @@ static int __init kasan_memhotplug_init(void)
return 0;
}
-module_init(kasan_memhotplug_init);
+core_initcall(kasan_memhotplug_init);
#endif