tracing: send_sigqueue() needs trace_signal_generate() too

Add trace_signal_generate() into send_sigqueue().

send_sigqueue() is very similar to __send_signal(), just it uses
the preallocated info. It should do the same wrt tracing.

Reported-by: Seiji Aguchi <saguchi@redhat.com>
Reviewed-by: Seiji Aguchi <seiji.aguchi@hds.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index 1bd9e86fda1f..8511e39813c7 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1591,7 +1591,7 @@ int send_sigqueue(struct sigqueue *q, struct task_struct *t, int group)
         int sig = q->info.si_signo;
         struct sigpending *pending;
         unsigned long flags;
-        int ret;
+        int ret, result;
 
         BUG_ON(!(q->flags & SIGQUEUE_PREALLOC));
 
@@ -1600,6 +1600,7 @@ int send_sigqueue(struct sigqueue *q, struct task_struct *t, int group)
                 goto ret;
 
         ret = 1; /* the signal is ignored */
+        result = TRACE_SIGNAL_IGNORED;
         if (!prepare_signal(sig, t, 0))
                 goto out;
 
@@ -1611,6 +1612,7 @@ int send_sigqueue(struct sigqueue *q, struct task_struct *t, int group)
                  */
                 BUG_ON(q->info.si_code != SI_TIMER);
                 q->info.si_overrun++;
+                result = TRACE_SIGNAL_ALREADY_PENDING;
                 goto out;
         }
         q->info.si_overrun = 0;
@@ -1620,7 +1622,9 @@ int send_sigqueue(struct sigqueue *q, struct task_struct *t, int group)
         list_add_tail(&q->list, &pending->list);
         sigaddset(&pending->signal, sig);
         complete_signal(sig, t, group);
+        result = TRACE_SIGNAL_DELIVERED;
 out:
+        trace_signal_generate(sig, &q->info, t, group, result);
         unlock_task_sighand(t, &flags);
 ret:
         return ret;