Subject: [Bug 205099] KASAN hit at raid6_pq: BUG: Unable to handle kernel data access at 0x00f0fd0d

From: [email-masked]
Date: Mon, 29 Nov 2021 06:51:31 +0000

https://bugzilla.kernel.org/show_bug.cgi?id=205099

--- Comment #44 from Christophe Leroy ([email-masked]) ---
Interesting.

I wonder why it works with OUTLINE KASAN but not with INLINE KASAN.

Can you activate CONFIG_PTDUMP_DEBUGFS and provide the content of
/sys/kernel/debug/kernel_page_tables for the cases than don't work (OUTILINE
KASAN + 0x30000000 LOWMEM_SIZE, INLINE KASAN + 0x20000000 LOWMEM SIZE).

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