diff -Nru irqbalance-1.9.3/debian/changelog irqbalance-1.9.3/debian/changelog
--- irqbalance-1.9.3/debian/changelog	2024-03-08 06:11:00.000000000 +0100
+++ irqbalance-1.9.3/debian/changelog	2024-03-14 17:02:44.000000000 +0100
@@ -1,3 +1,10 @@
+irqbalance (1.9.3-2ubuntu4) noble; urgency=medium
+
+  * d/p/lp2054872-fix-irq-io-error.patch:
+    Fixes IO errors during IRQ affinity change (LP: #2054872)
+
+ -- Robert Malz <robert.malz@canonical.com>  Thu, 14 Mar 2024 17:02:44 +0100
+
 irqbalance (1.9.3-2ubuntu3) noble; urgency=medium
 
   * No-change rebuild against libglib2.0-0t64
diff -Nru irqbalance-1.9.3/debian/patches/lp2054872-fix-irq-io-error.patch irqbalance-1.9.3/debian/patches/lp2054872-fix-irq-io-error.patch
--- irqbalance-1.9.3/debian/patches/lp2054872-fix-irq-io-error.patch	1970-01-01 01:00:00.000000000 +0100
+++ irqbalance-1.9.3/debian/patches/lp2054872-fix-irq-io-error.patch	2024-03-14 17:02:44.000000000 +0100
@@ -0,0 +1,22 @@
+From 8d7c78304fb994a519e2709024b196841e84238a
+From: Robert Malz <robert.malz@canonical.com>
+Date:   Thu Mar 14 13:36:15 2024 +0100
+Subject: [PATCH] Flush file before closing
+
+After writing to file, before closing, flush is required.
+Without it fclose can randomly return IO error.
+
+Origin: upstream, https://github.com/Irqbalance/irqbalance/commit/8d7c78304fb994a519e2709024b196841e84238a
+Bug: https://github.com/Irqbalance/irqbalance/issues/301
+Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/irqbalance/+bug/2054872
+
+--- irqbalance-1.9.3.orig/activate.c
++++ irqbalance-1.9.3/activate.c
+@@ -82,6 +82,7 @@ static void activate_mapping(struct irq_
+ 	cpumask_scnprintf(buf, PATH_MAX, applied_mask);
+ 	ret = fprintf(file, "%s", buf);
+ 	errsave = errno;
++	fflush(file);
+ 	if (fclose(file)) {
+ 		errsave = errno;
+ 		goto error;
diff -Nru irqbalance-1.9.3/debian/patches/series irqbalance-1.9.3/debian/patches/series
--- irqbalance-1.9.3/debian/patches/series	2024-01-09 17:27:21.000000000 +0100
+++ irqbalance-1.9.3/debian/patches/series	2024-03-14 17:02:44.000000000 +0100
@@ -1 +1,2 @@
 filter-console-only-output-when-using-journal-mode.debpatch
+lp2054872-fix-irq-io-error.patch