mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-29 20:06:38 +07:00
08613e4626
The caif code will register its own pernet_operations, and then register a netdevice_notifier. Each time the netdevice_notifier is triggered, it'll do some stuff... including a lookup of its own pernet stuff with net_generic(). If the net_generic() call ever returns NULL, the caif code will BUG(). That doesn't seem *so* unreasonable, I suppose — it does seem like it should never happen. However, it *does* happen. When we clone a network namespace, setup_net() runs through all the pernet_operations one at a time. It gets to loopback before it gets to caif. And loopback_net_init() registers a netdevice... while caif hasn't been initialised. So the caif netdevice notifier triggers, and immediately goes BUG(). We could imagine a complex and overengineered solution to this generic class of problems, but this patch takes the simple approach. It just makes caif_device_notify() *not* go looking for its pernet data structures if the device it's being notified about isn't a caif device in the first place. Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|---|---|---|
| .. | ||
| caif_dev.c | ||
| caif_socket.c | ||
| cfcnfg.c | ||
| cfctrl.c | ||
| cfdbgl.c | ||
| cfdgml.c | ||
| cffrml.c | ||
| cfmuxl.c | ||
| cfpkt_skbuff.c | ||
| cfrfml.c | ||
| cfserl.c | ||
| cfsrvl.c | ||
| cfutill.c | ||
| cfveil.c | ||
| cfvidl.c | ||
| chnl_net.c | ||
| Kconfig | ||
| Makefile | ||