Not compatible with d52888aa2753 ("x86/mm: Move LDT remap out of KASLR region on 5-level paging")

WANG Chao <chao.wang@xxxxxxxxx> · Wed, 16 Jan 2019 20:25:02 +0800

commit d52888aa2753 ("x86/mm: Move LDT remap out of KASLR region on
5-level paging") changed PAGE_OFFSET from 0xffff880000000000 to
0xffff888000000000. 

crash can't open such with CONFIG_RANDOMIZE_BASE=n:

crash: read error: kernel virtual address: ffff888ffe605024  type: "tss_struct ist array"

Edit defs.h:

-#define PAGE_OFFSET_2_6_27         0xffff880000000000
+#define PAGE_OFFSET_2_6_27         0xffff888000000000

And this works for me.

(d52888aa2753 has also been included in 4.14.84)

Thanks
WANG Chao

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