LoongArch: Fix earlycon parameter if KASAN enabled

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The earlycon parameter is based on fixmap, and fixmap addresses are not
supposed to be shadowed by KASAN. So return the kasan_early_shadow_page
in kasan_mem_to_shadow() if the input address is above FIXADDR_START.
Otherwise earlycon cannot work after kasan_init().

Cc: stable@vger.kernel.org
Fixes: 5aa4ac64e6 ("LoongArch: Add KASAN (Kernel Address Sanitizer) support")
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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Huacai Chen 2024-02-06 12:32:05 +08:00

parent 4551b30525

commit 639420e9f6

1 changed files with 3 additions and 0 deletions

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arch/loongarch/mm/kasan_init.c

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