Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 05/38] driver-core: fix potential race condition in drivers/base/dd.c | Date | Fri, 21 May 2010 09:53:35 -0700 |
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From: Stefani Seibold <stefani@seibold.net>
This patch fix a potential race condition in the driver_bound() function in the file driver/base/dd.c.
The broadcast of the BUS_NOTIFY_BOUND_DRIVER notifier should be done after adding the new device to the driver list. Otherwise notifier listener will fail if they use functions like usb_find_interface().
The patch is against kernel 2.6.33. Please merge it.
Signed-off-by: Stefani Seibold <stefani@seibold.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- drivers/base/dd.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index c89291f..503c262 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -40,11 +40,11 @@ static void driver_bound(struct device *dev) pr_debug("driver: '%s': %s: bound to device '%s'\n", dev_name(dev), __func__, dev->driver->name); + klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices); + if (dev->bus) blocking_notifier_call_chain(&dev->bus->p->bus_notifier, BUS_NOTIFY_BOUND_DRIVER, dev); - - klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices); } static int driver_sysfs_add(struct device *dev) -- 1.7.0.3
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