Re: [PATCH 1/2] ACPI: NFIT: Fix incorrect calculation of idt size

From: Dave Jiang
Date: Fri Aug 25 2023 - 11:10:20 EST




On 8/24/23 20:59, Yu Liao wrote:
Hi,

A kindly ping, any comment on this?

You can add my review tag to both of your patches in the series. Please cc nvdimm@xxxxxxxxxxxxxxx next time as well for nfit. Thanks!

Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx>


Best regards,
Yu


On 2023/8/17 17:11, Yu Liao wrote:
acpi_nfit_interleave's field 'line_offset' is switched to flexible array [1],
but sizeof_idt() still calculates the size in the form of 1-element array.

Therefore, fix incorrect calculation in sizeof_idt().

[1] https://lore.kernel.org/lkml/2652195.BddDVKsqQX@kreacher/

Fixes: 2a5ab99847bd ("ACPICA: struct acpi_nfit_interleave: Replace 1-element array with flexible array")
Cc: stable@xxxxxxxxxxxxxxx # v6.4+
Signed-off-by: Yu Liao <liaoyu15@xxxxxxxxxx>
---
drivers/acpi/nfit/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 07204d482968..305f590c54a8 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -855,7 +855,7 @@ static size_t sizeof_idt(struct acpi_nfit_interleave *idt)
{
if (idt->header.length < sizeof(*idt))
return 0;
- return sizeof(*idt) + sizeof(u32) * (idt->line_count - 1);
+ return sizeof(*idt) + sizeof(u32) * idt->line_count;
}
static bool add_idt(struct acpi_nfit_desc *acpi_desc,