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7220e8f4d4
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 9bfc9d65a1dc ("hamradio:
use netdev_lockdep_set_classes() helper")
Fixes: 7e4d784f5810 ("net: hold netdev instance lock during rtnetlink operations")
Reported-by: syzbot+377b71db585c9c705f8e@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/lkml/67cd611c.050a0220.14db68.0073.GAE@google.com/T/#u
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250327144439.2463509-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>