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[2/4] um: Set parent-death signal for ubd io thread/process

Message ID 20241024142828.2612828-3-tiwei.btw@antgroup.com
State Accepted
Headers show
Series um: Set parent-death signal for sub-processes | expand

Commit Message

Tiwei Bie Oct. 24, 2024, 2:28 p.m. UTC 
The ubd io 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@antgroup.com>
---
 arch/um/drivers/ubd_kern.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 7f28ec1929dc..2b8d04e67600 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1499,6 +1499,7 @@  int io_thread(void *arg)
 {
 	int n, count, written, res;
 
+	os_set_pdeathsig();
 	os_fix_helper_signals();
 
 	while(1){