diff options
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 51e43e17d1c6..12be8ef85d82 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3192,6 +3192,16 @@ long do_no_restart_syscall(struct restart_block *param) static void __set_task_blocked(struct task_struct *tsk, const sigset_t *newset) { + sigset_t floor, floored; + + /* A user worker never unblocks anything but SIGKILL and SIGSTOP. */ + if (unlikely(tsk->flags & PF_USER_WORKER)) { + siginitsetinv(&floor, SIG_KERNEL_ONLY_MASK); + sigorsets(&floored, newset, &floor); + WARN_ON_ONCE(!sigequalsets(&floored, newset)); + newset = &floored; + } + if (task_sigpending(tsk) && !thread_group_empty(tsk)) { sigset_t newblocked; /* A set of now blocked but previously unblocked signals. */ |