Commit 7220e8f4 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

net: lapbether: use netdev_lockdep_set_classes() helper 



drivers/net/wan/lapbether.c uses stacked devices.
Like similar drivers, it must use netdev_lockdep_set_classes()
to avoid LOCKDEP splats.

This is similar to commit 9bfc9d65 ("hamradio:
use netdev_lockdep_set_classes() helper")

Fixes: 7e4d784f ("net: hold netdev instance lock during rtnetlink operations")
Reported-by: default avatar <syzbot+377b71db585c9c705f8e@syzkaller.appspotmail.com>
Closes: https://lore.kernel.org/lkml/67cd611c.050a0220.14db68.0073.GAE@google.com/T/#u


Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarStanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250327144439.2463509-1-edumazet@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 4f1eaabb

drivers/net/wan/lapbether.c

+2 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <linux/lapb.h>

#include <linux/init.h>



#include <net/netdev_lock.h>

#include <net/x25device.h>



static const u8 bcast_addr[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
@@ -366,6 +367,7 @@ static const struct net_device_ops lapbeth_netdev_ops = { 


static void lapbeth_setup(struct net_device *dev)

{

	netdev_lockdep_set_classes(dev);

	dev->netdev_ops	     = &lapbeth_netdev_ops;

	dev->needs_free_netdev = true;

	dev->type            = ARPHRD_X25;