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kernel: treat PF_IO_WORKER like PF_KTHREAD for ptrace/signals

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Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2021-02-18 07:01:11 -07:00
parent 4727dc20e0
commit 6fb8f43ced
2 changed files with 3 additions and 3 deletions
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2
kernel/ptrace.c
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@@ -375,7 +375,7 @@ static int ptrace_attach(struct task_struct *task, long request,
audit_ptrace(task); audit_ptrace(task);
retval = -EPERM; retval = -EPERM;
if (unlikely(task->flags & PF_KTHREAD)) if (unlikely(task->flags & (PF_KTHREAD | PF_IO_WORKER)))
goto out; goto out;
if (same_thread_group(task, current)) if (same_thread_group(task, current))
goto out; goto out;

4
kernel/signal.c
View File

@@ -91,7 +91,7 @@ static bool sig_task_ignored(struct task_struct *t, int sig, bool force)
return true; return true;
/* Only allow kernel generated signals to this kthread */ /* Only allow kernel generated signals to this kthread */
if (unlikely((t->flags & PF_KTHREAD) && if (unlikely((t->flags & (PF_KTHREAD | PF_IO_WORKER)) &&
(handler == SIG_KTHREAD_KERNEL) && !force)) (handler == SIG_KTHREAD_KERNEL) && !force))
return true; return true;
@@ -1096,7 +1096,7 @@ static int __send_signal(int sig, struct kernel_siginfo *info, struct task_struc
/* /*
* Skip useless siginfo allocation for SIGKILL and kernel threads. * Skip useless siginfo allocation for SIGKILL and kernel threads.
*/ */
if ((sig == SIGKILL) || (t->flags & PF_KTHREAD)) if ((sig == SIGKILL) || (t->flags & (PF_KTHREAD | PF_IO_WORKER)))
goto out_set; goto out_set;
/* /*