使用 ksu 官网的 path_umount backport 补丁

.github/workflows/main.yml

@@ -8,9 +8,8 @@ env:
   defconfig: |
     dipper_defconfig
   kernel_patch: |
-    support-umount-modules-kernel.patch
+    backport-path-umount.patch
   kernelsu_patch: |
-    support-umount-modules-kernelsu.patch
 
 on:
   schedule:
@@ -225,7 +224,7 @@ jobs:
           path: AnyKernel3-master/*
 
       - name: Release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         with:
           tag_name: ${{ env.kernelsu_remote_version }}
           body: |
@@ -235,6 +234,9 @@ jobs:
             Kernel:
             https://github.com/${{ env.kernel_repository }}/tree/${{ env.kernel_commit_id }}
 
+            Branch:
+            ${{ env.kernel_branch }}
+
             KernelSU:
             https://github.com/tiann/KernelSU/releases/tag/${{ env.kernelsu_remote_version }}
           files: |

README.md

@@ -31,9 +31,8 @@ env:
   defconfig: |
     dipper_defconfig
   kernel_patch: |
-    support-umount-modules-kernel.patch
+    backport-path-umount.patch
   kernelsu_patch: |
-    support-umount-modules-kernelsu.patch
 ```
 
 ## 参数
@@ -64,6 +63,10 @@ env:
 
 分别是应用到 `内核` 和 `KernelSU` 的补丁文件列表，补丁文件需放在 `patches` 文件夹
 
-补丁详细说明: <https://github.com/tiann/KernelSU/discussions/955>
+补丁详细说明:
+
+<https://github.com/tiann/KernelSU/discussions/955>
+
+<https://kernelsu.org/zh_CN/guide/how-to-integrate-for-non-gki.html#how-to-backport-path-umount>
 
 如果 KernelSU 功能正常，**不要** 添加补丁

patches/backport-path-umount.patch

@@ -0,0 +1,42 @@
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -1739,6 +1739,39 @@ static inline bool may_mandlock(void)
+ }
+ #endif
+
++static int can_umount(const struct path *path, int flags)
++{
++	struct mount *mnt = real_mount(path->mnt);
++
++	if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
++		return -EINVAL;
++	if (!may_mount())
++		return -EPERM;
++	if (path->dentry != path->mnt->mnt_root)
++		return -EINVAL;
++	if (!check_mnt(mnt))
++		return -EINVAL;
++	if (mnt->mnt.mnt_flags & MNT_LOCKED) /* Check optimistically */
++		return -EINVAL;
++	if (flags & MNT_FORCE && !capable(CAP_SYS_ADMIN))
++		return -EPERM;
++	return 0;
++}
++
++int path_umount(struct path *path, int flags)
++{
++	struct mount *mnt = real_mount(path->mnt);
++	int ret;
++
++	ret = can_umount(path, flags);
++	if (!ret)
++		ret = do_umount(mnt, flags);
++
++	/* we mustn't call path_put() as that would clear mnt_expiry_mark */
++	dput(path->dentry);
++	mntput_no_expire(mnt);
++	return ret;
++}
+ /*
+  * Now umount can handle mount points as well as block devices.
+  * This is important for filesystems which use unnamed block devices.