riscv: cpu_ops_sbi: Use static array for boot_data

{
  "id": "2d1fab1818b9bf1f92e88477c72f7b9e84c8caffd4bdc0c130f8f524764ed4d1",
  "url": "https://osv.dev/vulnerability/CVE-2025-38407",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "riscv: cpu_ops_sbi: Use static array for boot_data",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: riscv: cpu_ops_sbi: Use static array for boot_data Since commit 6b9f29b81b15 (\"riscv: Enable pcpu page first chunk allocator\"), if NUMA is enabled, the page percpu allocator may be used on very sparse configurations, or when requested on boot with percpu_alloc=page. In that case, percpu data gets put in the vmalloc area. However, sbi_hsm_hart_start() needs the physical address of a sbi_hart_boot_data, and simply assumes that __pa() would work. This causes the just started hart to immediately access an invalid address and hang. Fortunately, struct sbi_hart_boot_data is not too large, so we can simply allocate an array for boot_data statically, putting it in the kernel image. This fixes NUMA=y SMP boot on Sophgo SG2042. To reproduce on QEMU: Set CONFIG_NUMA=y and CONFIG_DEBUG_VIRTUAL=y, then run with: qemu-system-riscv64 -M virt -smp 2 -nographic \\ -kernel arch/riscv/boot/Image \\ -append \"percpu_alloc=page\" Kernel output: [ 0.000000] Booting Linux on hartid 0 [ 0.000000] Linux version 6.16.0-rc1 (dram@sakuya) (riscv64-unknown-linux-gnu-gcc (GCC) 14.2.1 20250322, GNU ld (GNU Binutils) 2.44) #11 SMP Tue Jun 24 14:56:22 CST 2025 ... [ 0.000000] percpu: 28 4K pages/cpu s85784 r8192 d20712 ... [ 0.083192] smp: Bringing up secondary CPUs ... [ 0.086722] ------------[ cut here ]------------ [ 0.086849] virt_to_phys used for non-linear address: (____ptrval____) (0xff2000000001d080) [ 0.088001] WARNING: CPU: 0 PID: 1 at",
    "evidence": "osv:CVE-2025-38407",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.37",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-38407",
      "aliases": [
        "CVE-2025-38407"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6b9f29b81b155af023da95f560f738f29722b306"
                },
                {
                  "fixed": "f5fe094f35a37adea40b2fd52c99bb1333be9b07"
                },
                {
                  "fixed": "02c725cd55eb5052b88eeaa3f60a391ef4dcaec5"
                },
                {
                  "fixed": "2b29be967ae456fc09c320d91d52278cf721be1e"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38407.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.8.0"
                },
                {
                  "fixed": "6.12.37"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.15.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38407.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.544353527Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/02c725cd55eb5052b88eeaa3f60a391ef4dcaec5",
        "https://git.kernel.org/stable/c/2b29be967ae456fc09c320d91d52278cf721be1e",
        "https://git.kernel.org/stable/c/f5fe094f35a37adea40b2fd52c99bb1333be9b07",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38407.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38407",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38407.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38407",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 508811,
  "published_at": "2025-07-25T13:20:12.2+00:00"
}