From: Gyeyoung Baek <gye976@gmail.com>
Date: Thu, 12 Jun 2025 12:48:27 +0000 (+0900)
Subject: genirq/irq_sim: Initialize work context pointers properly
X-Git-Tag: v6.16-rc3~3^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8a2277a3c9e4cc5398f80821afe7ecbe9bdf2819;p=thirdparty%2Flinux.git

genirq/irq_sim: Initialize work context pointers properly

Initialize `ops` member's pointers properly by using kzalloc() instead of
kmalloc() when allocating the simulation work context. Otherwise the
pointers contain random content leading to invalid dereferencing.

Signed-off-by: Gyeyoung Baek <gye976@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250612124827.63259-1-gye976@gmail.com
---

diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
index 1a3d483548e2f..ae4c9cbd1b4b9 100644
--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -202,7 +202,7 @@ struct irq_domain *irq_domain_create_sim_full(struct fwnode_handle *fwnode,
 					      void *data)
 {
 	struct irq_sim_work_ctx *work_ctx __free(kfree) =
-				kmalloc(sizeof(*work_ctx), GFP_KERNEL);
+				kzalloc(sizeof(*work_ctx), GFP_KERNEL);
 
 	if (!work_ctx)
 		return ERR_PTR(-ENOMEM);