[RFCv2 bluetooth-next 04/19] 6lowpan: hold netdev while unregister
flat view
STALE3619d
From: Alexander Aring <hidden>
Date: 2016-08-07 14:30:41
Subsystem:
6lowpan generic (btle/ieee 802.15.4), networking [general], the rest · Maintainers:
Alexander Aring, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v1 of 2 in this series.
Revisions (2)
- rfc [diff vs current]
- v1 current
I saw that unregister_netdevice will also free the netdev by running dev_put. This may clash run debugfs exist, because it use netdevice private data room. Signed-off-by: Alexander Aring <redacted> --- net/6lowpan/core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/6lowpan/core.c b/net/6lowpan/core.c
index 5945f7e..00ffab3 100644
--- a/net/6lowpan/core.c
+++ b/net/6lowpan/core.c@@ -62,8 +62,10 @@ EXPORT_SYMBOL(lowpan_register_netdev); void lowpan_unregister_netdevice(struct net_device *dev) { + dev_hold(dev); unregister_netdevice(dev); lowpan_dev_debugfs_exit(dev); + dev_put(dev); } EXPORT_SYMBOL(lowpan_unregister_netdevice);
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2.9.2