From 27bbb2a0fddf70e185e800cd78f0142d45330c6c Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Tue, 21 Nov 2023 17:26:50 +0100 Subject: __ptrace_unlink: kill the obsolete "FIXME" code The corner case described by the comment is no longer possible after the commit 7b3c36fc4c23 ("ptrace: fix task_join_group_stop() for the case when current is traced"), task_join_group_stop() ensures that the new thread has the correct signr in JOBCTL_STOP_SIGMASK regardless of ptrace. Link: https://lkml.kernel.org/r/20231121162650.GA6635@redhat.com Signed-off-by: Oleg Nesterov Cc: Eric Biederman Signed-off-by: Andrew Morton --- kernel/ptrace.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) (limited to 'kernel/ptrace.c') diff --git a/kernel/ptrace.c b/kernel/ptrace.c index d8b5e13a2229..3617213c3d8a 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -145,20 +145,9 @@ void __ptrace_unlink(struct task_struct *child) */ if (!(child->flags & PF_EXITING) && (child->signal->flags & SIGNAL_STOP_STOPPED || - child->signal->group_stop_count)) { + child->signal->group_stop_count)) child->jobctl |= JOBCTL_STOP_PENDING; - /* - * This is only possible if this thread was cloned by the - * traced task running in the stopped group, set the signal - * for the future reports. - * FIXME: we should change ptrace_init_task() to handle this - * case. - */ - if (!(child->jobctl & JOBCTL_STOP_SIGMASK)) - child->jobctl |= SIGSTOP; - } - /* * If transition to TASK_STOPPED is pending or in TASK_TRACED, kick * @child in the butt. Note that @resume should be used iff @child -- cgit v1.2.3