genirq/irq_sim: Initialize work context pointers properly

[ 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>

diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
index dd76323ea3fd7410d56dc648441595e3474e6426..bde31468c19df2e7842641f40f906adcfd6d4b8d 100644 (file)
--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -166,7 +166,7 @@ struct irq_domain *irq_domain_create_sim(struct fwnode_handle *fwnode,
 {
        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;