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Date: Wed, 18 Jan 2017 11:11:35 +0200
From: Elena Reshetova <elena.reshetova@...el.com>
To: kernel-hardening@...ts.openwall.com
Cc: keescook@...omium.org,
arnd@...db.de,
tglx@...utronix.de,
mingo@...hat.com,
h.peter.anvin@...el.com,
peterz@...radead.org,
will.deacon@....com,
dwindsor@...il.com,
gregkh@...uxfoundation.org
Subject: [RFCv2 PATCH 06/18] kref: Avoid more abuse
From: Peter Zijlstra <peterz@...radead.org>
Leak references by unbalanced get, instead of poking at kref
implementation details.
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
drivers/usb/mon/mon_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c
index 33ff49c..4684734 100644
--- a/drivers/usb/mon/mon_main.c
+++ b/drivers/usb/mon/mon_main.c
@@ -409,7 +409,7 @@ static void __exit mon_exit(void)
printk(KERN_ERR TAG
": Outstanding opens (%d) on usb%d, leaking...\n",
mbus->nreaders, mbus->u_bus->busnum);
- atomic_set(&mbus->ref.refcount, 2); /* Force leak */
+ kref_get(&mbus->ref); /* Force leak */
}
mon_dissolve(mbus, mbus->u_bus);
--
2.7.4
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