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From: "Eric W. Biederman" <ebiederm@xmission.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	 Tejun Heo <tj@kernel.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 13/17] signal: Stop skipping current in do_group_exit & get_signal
Date: Tue, 18 Jun 2024 23:11:17 -0500	[thread overview]
Message-ID: <87iky5fu6y.fsf_-_@email.froward.int.ebiederm.org> (raw)
In-Reply-To: <87o77xinmt.fsf_-_@email.froward.int.ebiederm.org> (Eric W. Biederman's message of "Tue, 18 Jun 2024 23:04:42 -0500")


Now that schedule_task_exit_locked uses JOBCTL_WILL_EXIT instead of
setting the per task SIGKILL pending bit, and JOBCTL_WILL_EXIT is
expected to be present on all tasks that are exiting, it makes no
sense to skip the current task.  So call schedule_task_exit_locked on
all threads.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 kernel/exit.c   | 6 +-----
 kernel/signal.c | 6 +-----
 2 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/kernel/exit.c b/kernel/exit.c
index 564bf17f4589..471af82376e5 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1015,12 +1015,8 @@ do_group_exit(int exit_code)
 			sig->group_exit_code = exit_code;
 			sig->flags = SIGNAL_GROUP_EXIT;
 			sig->group_stop_count = 0;
-			__for_each_thread(sig, t) {
-				if (t == current)
-					continue;
+			__for_each_thread(sig, t)
 				schedule_task_exit_locked(t);
-			}
-			current->jobctl |= JOBCTL_WILL_EXIT;
 		}
 		spin_unlock_irq(&sighand->siglock);
 	}
diff --git a/kernel/signal.c b/kernel/signal.c
index 2b0f6d8baebb..8ae6d6550e82 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2876,12 +2876,8 @@ bool get_signal(struct ksignal *ksig)
 			signal->group_exit_code = exit_code;
 			signal->flags = SIGNAL_GROUP_EXIT;
 			signal->group_stop_count = 0;
-			__for_each_thread(signal, t) {
-				if (t == current)
-					continue;
+			__for_each_thread(signal, t)
 				schedule_task_exit_locked(t);
-			}
-			current->jobctl |= JOBCTL_WILL_EXIT;
 		}
 	fatal:
 		spin_unlock_irq(&sighand->siglock);
-- 
2.41.0


  parent reply	other threads:[~2024-06-19  4:11 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-09 14:23 [PATCH 0/1] exit: kill signal_struct->quick_threads Oleg Nesterov
2024-06-09 14:24 ` [PATCH 1/1] " Oleg Nesterov
2024-06-09 18:28 ` [PATCH 0/1] " Oleg Nesterov
2024-06-10 10:50 ` Q: css_task_iter_advance() && dying_tasks Oleg Nesterov
2024-06-10 11:08   ` Oleg Nesterov
2024-06-10 20:02     ` Tejun Heo
2024-06-10 20:00   ` Tejun Heo
2024-06-10 12:15 ` [PATCH 0/1] exit: kill signal_struct->quick_threads Eric W. Biederman
2024-06-10 15:29   ` Oleg Nesterov
2024-06-10 15:42     ` Oleg Nesterov
2024-06-10 16:18     ` Oleg Nesterov
2024-06-13 15:45     ` Oleg Nesterov
2024-06-15 14:53       ` Eric W. Biederman
2024-06-17 18:37         ` Oleg Nesterov
2024-06-19  3:48           ` Eric W. Biederman
2024-06-19  4:04             ` [PATCH 0/17] exit: complete synchronize_group_exit Eric W. Biederman
2024-06-19  4:05               ` [PATCH 01/17] signal: Make SIGKILL during coredumps an explicit special case Eric W. Biederman
2024-06-19 15:50                 ` Oleg Nesterov
2024-06-19 18:09                   ` Eric W. Biederman
2024-06-19 19:11                     ` Oleg Nesterov
2024-06-21  5:46                       ` Eric W. Biederman
2024-06-21 10:40                         ` Oleg Nesterov
2024-06-21 16:30                           ` Eric W. Biederman
2024-06-19  4:05               ` [PATCH 02/17] signal: Compute the process exit_code in get_signal Eric W. Biederman
2024-06-25 12:34                 ` Oleg Nesterov
2024-06-19  4:06               ` [PATCH 03/17] coredump: Consolidate the work to allow SIGKILL during coredumps Eric W. Biederman
2024-06-25 12:34                 ` Oleg Nesterov
2024-06-19  4:06               ` [PATCH 04/17] signal: In get_signal call do_exit when it is unnecessary to shoot down threads Eric W. Biederman
2024-06-25 12:35                 ` Oleg Nesterov
2024-06-19  4:07               ` [PATCH 05/17] signal: Bring down all threads when handling a non-coredump fatal signal Eric W. Biederman
2024-06-25 12:56                 ` Oleg Nesterov
2024-06-19  4:07               ` [PATCH 06/17] signal: Add JOBCTL_WILL_EXIT to mark exiting tasks Eric W. Biederman
2024-06-19  4:08               ` [PATCH 07/17] signal: Always set JOBCTL_WILL_EXIT for " Eric W. Biederman
2024-06-30 14:00                 ` kernel test robot
2024-06-19  4:08               ` [PATCH 08/17] signal: Don't target tasks that are exiting Eric W. Biederman
2024-06-19  4:09               ` [PATCH 09/17] signal: Test for process exit or de_thread using task_exit_pending Eric W. Biederman
2024-06-19  4:09               ` [PATCH 10/17] signal: Only set JOBCTL_WILL_EXIT if it is not already set Eric W. Biederman
2024-06-19  4:10               ` [PATCH 11/17] signal: Make individual tasks exiting a first class concept Eric W. Biederman
2024-06-19  4:10               ` [PATCH 12/17] signal: Remove zap_other_threads Eric W. Biederman
2024-06-19  4:11               ` Eric W. Biederman [this message]
2024-06-28  5:43                 ` [PATCH 13/17] signal: Stop skipping current in do_group_exit & get_signal kernel test robot
2024-06-19  4:11               ` [PATCH 14/17] signal: Factor out schedule_group_exit_locked Eric W. Biederman
2024-06-19  4:12               ` [PATCH 15/17] ptrace: Separate task->ptrace_code out from task->exit_code Eric W. Biederman
2024-06-19  4:12               ` [PATCH 16/17] signal: Record the exit_code when an exit is scheduled Eric W. Biederman
2024-06-19  4:13               ` [PATCH 17/17] signal: Set SIGNAL_GROUP_EXIT when all tasks have decided to exit Eric W. Biederman
2024-06-19 20:18             ` [PATCH 0/1] exit: kill signal_struct->quick_threads Oleg Nesterov

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