From d0d6683716791b2a2761a1bb025c613eb73da6c3 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Fri, 18 Aug 2017 13:46:19 -0700 Subject: net: don't decrement kobj reference count on init failure If kobject_init_and_add failed, then the failure path would decrement the reference count of the queue kobject whose reference count was already zero. Fixes: 114cf5802165 ("bql: Byte queue limits") Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- net/core/net-sysfs.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'net') diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index b4f9922b6f23..46ff41bf0210 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -917,20 +917,19 @@ static int rx_queue_add_kobject(struct net_device *dev, int index) error = kobject_init_and_add(kobj, &rx_queue_ktype, NULL, "rx-%u", index); if (error) - goto exit; + return error; if (dev->sysfs_rx_queue_group) { error = sysfs_create_group(kobj, dev->sysfs_rx_queue_group); - if (error) - goto exit; + if (error) { + kobject_put(kobj); + return error; + } } kobject_uevent(kobj, KOBJ_ADD); dev_hold(queue->dev); - return error; -exit: - kobject_put(kobj); return error; } #endif /* CONFIG_SYSFS */ @@ -1339,21 +1338,20 @@ static int netdev_queue_add_kobject(struct net_device *dev, int index) error = kobject_init_and_add(kobj, &netdev_queue_ktype, NULL, "tx-%u", index); if (error) - goto exit; + return error; #ifdef CONFIG_BQL error = sysfs_create_group(kobj, &dql_group); - if (error) - goto exit; + if (error) { + kobject_put(kobj); + return error; + } #endif kobject_uevent(kobj, KOBJ_ADD); dev_hold(queue->dev); return 0; -exit: - kobject_put(kobj); - return error; } #endif /* CONFIG_SYSFS */ -- cgit v1.2.3-59-g8ed1b