From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> [ Upstream commit 266e9b3475ba82212062771fdbc40be0e3c06ec8 ] syzbot is reporting that siw_netdev_event(NETDEV_UNREGISTER) cannot destroy siw_device created after unshare(CLONE_NEWNET) due to net namespace check. It seems that this check was by error there and should be removed. Reported-by: syzbot <syzbot+5e70d01ee8985ae62a3b@xxxxxxxxxxxxxxxxxxxxxxxxx> Link: https://syzkaller.appspot.com/bug?extid=5e70d01ee8985ae62a3b Suggested-by: Jason Gunthorpe <jgg@xxxxxxxx> Suggested-by: Leon Romanovsky <leon@xxxxxxxxxx> Fixes: bdcf26bf9b3a ("rdma/siw: network and RDMA core interface") Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/a44e9ac5-44e2-d575-9e30-02483cc7ffd1@xxxxxxxxxxxxxxxxxxx Reviewed-by: Bernard Metzler <bmt@xxxxxxxxxxxxxx> Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/infiniband/sw/siw/siw_main.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c index dacc174604bf2..65b5cda5457ba 100644 --- a/drivers/infiniband/sw/siw/siw_main.c +++ b/drivers/infiniband/sw/siw/siw_main.c @@ -437,9 +437,6 @@ static int siw_netdev_event(struct notifier_block *nb, unsigned long event, dev_dbg(&netdev->dev, "siw: event %lu\n", event); - if (dev_net(netdev) != &init_net) - return NOTIFY_OK; - base_dev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_SIW); if (!base_dev) return NOTIFY_OK; -- 2.39.2
