diff options
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 343d87c95c78..c3017aa8024a 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -43,7 +43,6 @@ #include <linux/cn_proc.h> #include <linux/compiler.h> #include <linux/posix-timers.h> -#include <linux/livepatch.h> #include <linux/cgroup.h> #include <linux/audit.h> @@ -91,7 +90,7 @@ static bool sig_task_ignored(struct task_struct *t, int sig, bool force) return true; /* Only allow kernel generated signals to this kthread */ - if (unlikely((t->flags & (PF_KTHREAD | PF_IO_WORKER)) && + if (unlikely((t->flags & PF_KTHREAD) && (handler == SIG_KTHREAD_KERNEL) && !force)) return true; @@ -181,8 +180,7 @@ void recalc_sigpending_and_wake(struct task_struct *t) void recalc_sigpending(void) { - if (!recalc_sigpending_tsk(current) && !freezing(current) && - !klp_patch_pending(current)) + if (!recalc_sigpending_tsk(current) && !freezing(current)) clear_thread_flag(TIF_SIGPENDING); } @@ -1096,7 +1094,7 @@ static int __send_signal(int sig, struct kernel_siginfo *info, struct task_struc /* * Skip useless siginfo allocation for SIGKILL and kernel threads. */ - if ((sig == SIGKILL) || (t->flags & (PF_KTHREAD | PF_IO_WORKER))) + if ((sig == SIGKILL) || (t->flags & PF_KTHREAD)) goto out_set; /* @@ -2770,13 +2768,21 @@ relock: } /* + * PF_IO_WORKER threads will catch and exit on fatal signals + * themselves. They have cleanup that must be performed, so + * we cannot call do_exit() on their behalf. + */ + if (current->flags & PF_IO_WORKER) + goto out; + + /* * Death signals, no core dump. */ do_group_exit(ksig->info.si_signo); /* NOTREACHED */ } spin_unlock_irq(&sighand->siglock); - +out: ksig->sig = signr; if (!(ksig->ka.sa.sa_flags & SA_EXPOSE_TAGBITS)) |