net-sysfs: call dev_hold if kobject_init_and_add success

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commit a3e23f719f upstream.

In netdev_queue_add_kobject and rx_queue_add_kobject,
if sysfs_create_group failed, kobject_put will call
netdev_queue_release to decrease dev refcont, however
dev_hold has not be called. So we will see this while
unregistering dev:

unregister_netdevice: waiting for bcsh0 to become free. Usage count = -1

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: d0d6683716 ("net: don't decrement kobj reference count on init failure")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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YueHaibing 2019-03-19 10:16:53 +08:00 • committed by Ben Hutchings

parent 15e268e9e1

commit 1b75034a1b

1 changed files with 4 additions and 2 deletions

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net/core/net-sysfs.c

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