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ACPI: APEI: EINJ: Limit error type to 32-bit width

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The bit map of error types to inject is 32-bit width [1].

Add parameter check to reflect the fact.

[1] ACPI Specification 6.4, Section 18.6.4. Error Types

Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Shuai Xue 2023-01-18 14:35:04 +08:00 committed by Rafael J. Wysocki
parent 6d796c50f8
commit 53fc7e80f3
1 changed files with 4 additions and 0 deletions
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4
drivers/acpi/apei/einj.c
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@ -616,6 +616,10 @@ static int error_type_set(void *data, u64 val)
u32 available_error_type = 0;
u32 tval, vendor;
/* Only low 32 bits for error type are valid */
if (val & GENMASK_ULL(63, 32))
return -EINVAL;
/*
* Vendor defined types have 0x80000000 bit set, and
* are not enumerated by ACPI_EINJ_GET_ERROR_TYPE