With IO threads accepting signals, including SIGSTOP, unmask the
SIGSTOP signal from the default blocked mask.

Signed-off-by: Jens Axboe <ax...@kernel.dk>
---
 kernel/fork.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/fork.c b/kernel/fork.c
index d3171e8e88e5..d5a40552910f 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2435,7 +2435,7 @@ struct task_struct *create_io_thread(int (*fn)(void *), 
void *arg, int node)
        tsk = copy_process(NULL, 0, node, &args);
        if (!IS_ERR(tsk)) {
                sigfillset(&tsk->blocked);
-               sigdelsetmask(&tsk->blocked, sigmask(SIGKILL));
+               sigdelsetmask(&tsk->blocked, sigmask(SIGKILL)|sigmask(SIGSTOP));
        }
        return tsk;
 }
-- 
2.31.0

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