linux-kernel - [PATCH] irq: Fix uninitialized pointers

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Message-ID: <20250527093530.958801-1-gye976@gmail.com>
Date: Tue, 27 May 2025 18:35:30 +0900
From: Gyeyoung Baek <gye976@...il.com>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org,
	Gyeyoung Baek <gye976@...il.com>
Subject: [PATCH] irq: Fix uninitialized pointers

Fix uninitialized `ops` member's pointers to avoid kernel Oops in `irq_sim_request_resources()`.

Signed-off-by: Gyeyoung Baek <gye976@...il.com>
---
 kernel/irq/irq_sim.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
index 1a3d483548e2..67fd1de5d197 100644
--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -222,8 +222,12 @@ struct irq_domain *irq_domain_create_sim_full(struct fwnode_handle *fwnode,
 	work_ctx->pending = no_free_ptr(pending);
 	work_ctx->user_data = data;
 
-	if (ops)
+	if (ops) {
 		memcpy(&work_ctx->ops, ops, sizeof(*ops));
+	} else {
+		work_ctx->ops.irq_sim_irq_released = NULL;
+		work_ctx->ops.irq_sim_irq_requested = NULL;
+	}
 
 	return no_free_ptr(work_ctx)->domain;
 }
-- 
2.43.0