linux-kernel - [RESEND PATCH] genirq: fix potential memleak when failing to get irq pm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1471854112-13006-1-git-send-email-shawn.lin@rock-chips.com>
Date:   Mon, 22 Aug 2016 16:21:52 +0800
From:   Shawn Lin <shawn.lin@...k-chips.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>
Subject: [RESEND PATCH] genirq: fix potential memleak when failing to get irq pm

Obviously we should free action here if irq_chip_pm_get
failed.

Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
---

 kernel/irq/manage.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 73a2b78..9530fcd 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1681,8 +1681,10 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler,
 	action->dev_id = dev_id;
 
 	retval = irq_chip_pm_get(&desc->irq_data);
-	if (retval < 0)
+	if (retval < 0) {
+		kfree(action);
 		return retval;
+	}
 
 	chip_bus_lock(desc);
 	retval = __setup_irq(irq, desc, action);
@@ -1985,8 +1987,10 @@ int request_percpu_irq(unsigned int irq, irq_handler_t handler,
 	action->percpu_dev_id = dev_id;
 
 	retval = irq_chip_pm_get(&desc->irq_data);
-	if (retval < 0)
+	if (retval < 0) {
+		kfree(action);
 		return retval;
+	}
 
 	chip_bus_lock(desc);
 	retval = __setup_irq(irq, desc, action);
-- 
2.3.7