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lib: utils/irqchip: plic: Ensure no out-of-bound access in context save/restore helpers

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Currently the context save/restore helpers writes/reads the provided
array using an index whose maximum value is determined by PLIC, which
potentially may disagree with the caller to these helpers.

Add a parameter to ask the caller to provide the size limit of the
array to ensure no out-of-bound access happens.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Bin Meng
2022-12-11 14:54:24 +08:00
committed by Anup Patel
parent fabbc00668
commit 9a2eeb4aae
5 changed files with 23 additions and 14 deletions
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5
platform/generic/allwinner/sun20i-d1.c
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@@ -78,7 +78,7 @@ static u32 plic_threshold;
static void sun20i_d1_plic_save(void)
{
fdt_plic_context_save(true, plic_sie, &plic_threshold);
fdt_plic_context_save(true, plic_sie, &plic_threshold, PLIC_IE_WORDS);
fdt_plic_priority_save(plic_priority, PLIC_SOURCES);
}
@@ -86,7 +86,8 @@ static void sun20i_d1_plic_restore(void)
{
thead_plic_restore();
fdt_plic_priority_restore(plic_priority, PLIC_SOURCES);
fdt_plic_context_restore(true, plic_sie, plic_threshold);
fdt_plic_context_restore(true, plic_sie, plic_threshold,
PLIC_IE_WORDS);
}
/*