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-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <1310752065-27895-81-git-send-email-kys@microsoft.com>
Date:	Fri, 15 Jul 2011 10:47:09 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: [PATCH 081/117] Staging: hv: vmbus: Introduce a lock to protect the ext field in hv_device

The current mechanism for handling references in broken.
Introduce a lock to protect the ext field in hv_device.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
---
 drivers/staging/hv/hyperv.h    |    3 +++
 drivers/staging/hv/vmbus_drv.c |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/hyperv.h b/drivers/staging/hv/hyperv.h
index c4a9f38..82ba110 100644
--- a/drivers/staging/hv/hyperv.h
+++ b/drivers/staging/hv/hyperv.h
@@ -826,6 +826,9 @@ struct hv_device {
 
 	struct vmbus_channel *channel;
 
+	/* This lock protects the device extension field */
+	spinlock_t ext_lock;
+
 	/* Device extension; */
 	void *ext;
 };
diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index ffd6066..29c1712 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -578,6 +578,7 @@ struct hv_device *vmbus_child_device_create(uuid_le *type,
 		return NULL;
 	}
 
+	spin_lock_init(&child_device_obj->ext_lock);
 	child_device_obj->channel = channel;
 	memcpy(&child_device_obj->dev_type, type, sizeof(uuid_le));
 	memcpy(&child_device_obj->dev_instance, instance,
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ