can: bcm/raw/isotp: use per module netdevice notifier

syzbot is reporting hung task at register_netdevice_notifier() [1] and
unregister_netdevice_notifier() [2], for cleanup_net() might perform
time consuming operations while CAN driver's raw/bcm/isotp modules are
calling {register,unregister}_netdevice_notifier() on each socket.

Change raw/bcm/isotp modules to call register_netdevice_notifier() from
module's __init function and call unregister_netdevice_notifier() from
module's __exit function, as with gw/j1939 modules are doing.

Link: https://syzkaller.appspot.com/bug?id=391b9498827788b3cc6830226d4ff5be87107c30 [1]
Link: https://syzkaller.appspot.com/bug?id=1724d278c83ca6e6df100a2e320c10d991cf2bce [2]
Link: https://lore.kernel.org/r/[email protected]
Cc: linux-stable <[email protected]>
Reported-by: syzbot <[email protected]>
Reported-by: syzbot <[email protected]>
Reviewed-by: Kirill Tkhai <[email protected]>
Tested-by: syzbot <[email protected]>
Tested-by: Oliver Hartkopp <[email protected]>
Signed-off-by: Tetsuo Handa <[email protected]>
Signed-off-by: Marc Kleine-Budde <[email protected]>

0 files changed, 0 insertions, 0 deletions