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Message-Id: <20241024142828.2612828-4-tiwei.btw@antgroup.com>
Date: Thu, 24 Oct 2024 22:28:27 +0800
From: "Tiwei Bie" <tiwei.btw@...group.com>
To: richard@....at,
anton.ivanov@...bridgegreys.com,
johannes@...solutions.net
Cc: <linux-um@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
"Tiwei Bie" <tiwei.btw@...group.com>
Subject: [PATCH 3/4] um: Set parent-death signal for write_sigio thread/process
The write_sigio thread is not really a traditional thread. Set
the parent-death signal for it to ensure that it will be killed
if the UML kernel dies unexpectedly without proper cleanup.
Signed-off-by: Tiwei Bie <tiwei.btw@...group.com>
---
arch/um/os-Linux/sigio.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c
index 9e71794839e8..9aac8def4d63 100644
--- a/arch/um/os-Linux/sigio.c
+++ b/arch/um/os-Linux/sigio.c
@@ -55,6 +55,7 @@ static int write_sigio_thread(void *unused)
int i, n, respond_fd;
char c;
+ os_set_pdeathsig();
os_fix_helper_signals();
fds = ¤t_poll;
while (1) {
--
2.34.1
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