Merge tag 'lsm-pr-20260814' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

Pull LSM updates from Paul Moore:

 - Remove task_euid()

   The task_euid(), and Rust counterpart, was never widely used, for
   good reason, and now that the only user is gone we're removing it to
   rid ourselves of both dead and funky code.

 - Documentation improvements

   Correct some of the kdoc comments for security_task_prctl() and
   clarify the rust comments on task UID accessors.

 - Fix a memory leak in the LSM syscall selftests

* tag 'lsm-pr-20260814' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
  selftests/lsm: Fix memory leak in attr_lsm_count
  cred: delete task_euid()
  rust: task: clarify comments on task UID accessors
  lsm: clarify security_task_prctl() hook documentation

2 files changed, 2 insertions, 14 deletions

diff --git a/rust/helpers/task.c b/rust/helpers/task.c
index c0e1a06ede78..b46b1433a67e 100644
--- a/rust/helpers/task.c
+++ b/rust/helpers/task.c
@@ -28,11 +28,6 @@ __rust_helper kuid_t rust_helper_task_uid(struct task_struct *task)
 	return task_uid(task);
 }
 
-__rust_helper kuid_t rust_helper_task_euid(struct task_struct *task)
-{
-	return task_euid(task);
-}
-
 #ifndef CONFIG_USER_NS
 __rust_helper uid_t rust_helper_from_kuid(struct user_namespace *to, kuid_t uid)
 {
diff --git a/rust/kernel/task.rs b/rust/kernel/task.rs
index 38273f4eedb5..c2b3457b700c 100644
--- a/rust/kernel/task.rs
+++ b/rust/kernel/task.rs
@@ -210,20 +210,13 @@ impl Task {
         unsafe { *ptr::addr_of!((*self.as_ptr()).pid) }
     }
 
-    /// Returns the UID of the given task.
+    /// Returns the objective real UID of the given task.
     #[inline]
     pub fn uid(&self) -> Kuid {
         // SAFETY: It's always safe to call `task_uid` on a valid task.
         Kuid::from_raw(unsafe { bindings::task_uid(self.as_ptr()) })
     }
 
-    /// Returns the effective UID of the given task.
-    #[inline]
-    pub fn euid(&self) -> Kuid {
-        // SAFETY: It's always safe to call `task_euid` on a valid task.
-        Kuid::from_raw(unsafe { bindings::task_euid(self.as_ptr()) })
-    }
-
     /// Determines whether the given task has pending signals.
     #[inline]
     pub fn signal_pending(&self) -> bool {
@@ -371,7 +364,7 @@ impl PartialEq for Task {
 impl Eq for Task {}
 
 impl Kuid {
-    /// Get the current euid.
+    /// Get the current subjective effective UID.
     #[inline]
     pub fn current_euid() -> Kuid {
         // SAFETY: Just an FFI call.