CVE-2024-40915 riscv: rewrite __kernel_map_pages() to fix sleeping in invalid context

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/mm/pageattr.c"
    ],
    "versions": [
      {
        "version": "5fde3db5eb028b95aeefa1ab192d36800414e8b8",
        "lessThan": "919f8626099d9909b9a9620b05e8c8ab06581876",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5fde3db5eb028b95aeefa1ab192d36800414e8b8",
        "lessThan": "8661a7af04991201640863ad1a0983173f84b5eb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5fde3db5eb028b95aeefa1ab192d36800414e8b8",
        "lessThan": "d5257ceb19d92069195254866421f425aea42915",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5fde3db5eb028b95aeefa1ab192d36800414e8b8",
        "lessThan": "fb1cf0878328fe75d47f0aed0a65b30126fcefc4",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/mm/pageattr.c"
    ],
    "versions": [
      {
        "version": "5.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.7",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.95",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.35",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.9.6",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]