From 73866cf3468f59e89baba31b93d8fdf503b10b19 Mon Sep 17 00:00:00 2001
From: Jitendra Patidar <jitendra.patidar@nutanix.com>
Date: Tue, 27 Aug 2024 06:06:49 +0530
Subject: [PATCH] Fix issig() to check signal_pending after dequeue
 SIGSTOP/SIGTSTP

When process got SIGSTOP/SIGTSTP, issig() dequeue them and return 0.
But process could still have another signal pending after dequeue. So,
after dequeue, check and return 1, if signal_pending.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jitendra Patidar <jitendra.patidar@nutanix.com>
Closes #16464
---
 module/os/linux/spl/spl-thread.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/module/os/linux/spl/spl-thread.c b/module/os/linux/spl/spl-thread.c
index dbb8eefa7..2af766ac2 100644
--- a/module/os/linux/spl/spl-thread.c
+++ b/module/os/linux/spl/spl-thread.c
@@ -186,6 +186,13 @@ issig(void)
 
 		schedule();
 #endif
+		/*
+		 * Dequeued SIGSTOP/SIGTSTP.
+		 * Check if process has other singal pending.
+		 */
+		if (signal_pending(current))
+			return (1);
+
 		return (0);
 	}