[PATCH 6.1 253/280] genirq/irq_sim: Initialize work context pointers properly

Greg Kroah-Hartman
2026-02-04T15:17:20Z

From: Gyeyoung Baek <gye976@gmail.com>

[ Upstream commit 8a2277a3c9e4cc5398f80821afe7ecbe9bdf2819 ]

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
[ The context change is due to the commit 011f583781fa
("genirq/irq_sim: add an extended irq_sim initializer")
which is irrelevant to the logic of this patch. ]
Signed-off-by: Rahul Sharma <black.hawk@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/irq/irq_sim.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -166,7 +166,7 @@ struct irq_domain *irq_domain_create_sim
{
struct irq_sim_work_ctx *work_ctx;

- work_ctx = kmalloc(sizeof(*work_ctx), GFP_KERNEL);
+ work_ctx = kzalloc(sizeof(*work_ctx), GFP_KERNEL);
if (!work_ctx)
goto err_out;