[PATCH] audit: clear thread flag for new children
From: Tony Jones <tonyj(a)suse.de>
Minor performance enhancement.
Thread flag TIF_SYSCALL_AUDIT is not cleared for new children when audit
context creation has been disabled (auditctl -e0). This can cause new children
forked from a parent created when audit was enabled to not take the fastest
syscall path thru entry.S
Signed-off-by: Tony Jones <tonyj(a)suse.de>
---
kernel/auditsc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -814,8 +814,10 @@ int audit_alloc(struct task_struct *tsk)
struct audit_context *context;
enum audit_state state;
- if (likely(!audit_enabled))
+ if (likely(!audit_enabled)) {
+ clear_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT);
return 0; /* Return if not auditing. */
+ }
state = audit_filter_task(tsk);
if (likely(state == AUDIT_DISABLED))