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net: don't decrement kobj reference count on init failure

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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: 114cf58021 ("bql: Byte queue limits")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2017-08-18 13:46:19 -07:00 committed by David S. Miller
parent 01d300c577
commit d0d6683716
1 changed files with 10 additions and 12 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

22
net/core/net-sysfs.c
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@ -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, error = kobject_init_and_add(kobj, &rx_queue_ktype, NULL,
"rx-%u", index); "rx-%u", index);
if (error) if (error)
goto exit; return error;
if (dev->sysfs_rx_queue_group) { if (dev->sysfs_rx_queue_group) {
error = sysfs_create_group(kobj, dev->sysfs_rx_queue_group); error = sysfs_create_group(kobj, dev->sysfs_rx_queue_group);
if (error) if (error) {
goto exit; kobject_put(kobj);
return error;
}
} }
kobject_uevent(kobj, KOBJ_ADD); kobject_uevent(kobj, KOBJ_ADD);
dev_hold(queue->dev); dev_hold(queue->dev);
return error;
exit:
kobject_put(kobj);
return error; return error;
} }
#endif /* CONFIG_SYSFS */ #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, error = kobject_init_and_add(kobj, &netdev_queue_ktype, NULL,
"tx-%u", index); "tx-%u", index);
if (error) if (error)
goto exit; return error;
#ifdef CONFIG_BQL #ifdef CONFIG_BQL
error = sysfs_create_group(kobj, &dql_group); error = sysfs_create_group(kobj, &dql_group);
if (error) if (error) {
goto exit; kobject_put(kobj);
return error;
}
#endif #endif
kobject_uevent(kobj, KOBJ_ADD); kobject_uevent(kobj, KOBJ_ADD);
dev_hold(queue->dev); dev_hold(queue->dev);
return 0; return 0;
exit:
kobject_put(kobj);
return error;
} }
#endif /* CONFIG_SYSFS */ #endif /* CONFIG_SYSFS */