ACPI: NFIT: Fix incorrect calculation of idt size

commit 33908660e814203e996f6e775d033c5c32fcf9a7 upstream.

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@vger.kernel.org # v6.4+
Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20230826071654.564372-1-liaoyu15@huawei.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 07204d482968471ce0c8b9e0f2cd847bcb029efd..305f590c54a8c0e487a8053d99cf280b27733439 100644 (file)
--- 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,