[PATCH 5/7] security: Replace get_task_comm() with %pTN

[Yafang Shao]

Since task->comm is guaranteed to be NUL-terminated, we can print it
directly without the need to copy it into a separate buffer. This
simplifies the code and avoids unnecessary operations.

Signed-off-by: Yafang Shao <laoar.s...@gmail.com>
Cc: Kees Cook <k...@kernel.org>
Cc: Paul Moore <p...@paul-moore.com>
Cc: James Morris <jmor...@namei.org>
Cc: "Serge E. Hallyn" <se...@hallyn.com>
---
 security/yama/yama_lsm.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
index e1a5e13ea269..4bdfa51ea6fd 100644
--- a/security/yama/yama_lsm.c
+++ b/security/yama/yama_lsm.c
@@ -76,7 +76,6 @@ static void report_access(const char *access, struct 
task_struct *target,
                                struct task_struct *agent)
 {
        struct access_report_info *info;
-       char agent_comm[sizeof(agent->comm)];
 
        assert_spin_locked(&target->alloc_lock); /* for target->comm */
 
@@ -85,9 +84,8 @@ static void report_access(const char *access, struct 
task_struct *target,
                 * Imagine angry ranting about procfs here.
                 */
                pr_notice_ratelimited(
-                   "ptrace %s of \"%s\"[%d] was attempted by \"%s\"[%d]\n",
-                   access, target->comm, target->pid,
-                   get_task_comm(agent_comm, agent), agent->pid);
+                   "ptrace %s of \"%pTN\"[%d] was attempted by \"%pTN\"[%d]\n",
+                   access, target, target->pid, agent, agent->pid);
                return;
        }
 
-- 
2.43.5