On 8/21/2025 9:49 PM, Zhen Ni wrote:

Fix a permanent ACPI table memory leak in early_amd_iommu_init() when CMPXCHG16B feature is not supported

Fixes: 82582f85ed22 ("iommu/amd: Disable AMD IOMMU if CMPXCHG16B feature is not supported") Cc: stable@vger.kernel.org Signed-off-by: Zhen Ni zhen.ni@easystack.cn

---

drivers/iommu/amd/init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 7b5af6176de9..dddc432de7b0 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -3067,7 +3067,8 @@ static int __init early_amd_iommu_init(void) if (!boot_cpu_has(X86_FEATURE_CX16)) { pr_err("Failed to initialize. The CMPXCHG16B feature is required.\n");

• return -EINVAL;
  

• ret = -EINVAL;
  

• goto out;
  

  }

/*

Reviewed-by: Suravee Suthikulpanit suravee.suthikulpanit@amd.com

Thanks, Suravee