unregister_netdevice: waiting for syz_tun to become free. Usage count = 2 ref_tracker: netdev@00000000af1fb39d has 1/1 users at __netdev_tracker_alloc include/linux/netdevice.h:4400 [inline] netdev_hold include/linux/netdevice.h:4429 [inline] netdev_hold include/linux/netdevice.h:4424 [inline] ib_device_set_netdev drivers/infiniband/core/device.c:2253 [inline] ib_device_set_netdev+0x1cc/0x580 drivers/infiniband/core/device.c:2222 rxe_register_device+0x208/0x2cc drivers/infiniband/sw/rxe/rxe_verbs.c:1552 rxe_add+0xd60/0x10c8 drivers/infiniband/sw/rxe/rxe.c:212 rxe_net_add+0x9c/0xf4 drivers/infiniband/sw/rxe/rxe_net.c:618 rxe_newlink+0x58/0x14c drivers/infiniband/sw/rxe/rxe.c:234 nldev_newlink+0x280/0x4b4 drivers/infiniband/core/nldev.c:1797 rdma_nl_rcv_msg+0x274/0x56c drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x1f0/0x328 drivers/infiniband/core/netlink.c:239 rdma_nl_rcv+0x10/0x1c drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x424/0x700 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x640/0xa50 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0xc8/0x168 net/socket.c:742 ____sys_sendmsg+0x500/0x764 net/socket.c:2592 ___sys_sendmsg+0x11c/0x19c net/socket.c:2646 __sys_sendmsg+0x114/0x19c net/socket.c:2678 __compat_sys_sendmsg net/compat.c:346 [inline] __do_compat_sys_sendmsg net/compat.c:353 [inline] __se_compat_sys_sendmsg net/compat.c:350 [inline] __arm64_compat_sys_sendmsg+0x74/0xa4 net/compat.c:350 unregister_netdevice: waiting for syz_tun to become free. Usage count = 2 ref_tracker: netdev@00000000af1fb39d has 1/1 users at __netdev_tracker_alloc include/linux/netdevice.h:4400 [inline] netdev_hold include/linux/netdevice.h:4429 [inline] netdev_hold include/linux/netdevice.h:4424 [inline] ib_device_set_netdev drivers/infiniband/core/device.c:2253 [inline] ib_device_set_netdev+0x1cc/0x580 drivers/infiniband/core/device.c:2222 rxe_register_device+0x208/0x2cc drivers/infiniband/sw/rxe/rxe_verbs.c:1552 rxe_add+0xd60/0x10c8 drivers/infiniband/sw/rxe/rxe.c:212 rxe_net_add+0x9c/0xf4 drivers/infiniband/sw/rxe/rxe_net.c:618 rxe_newlink+0x58/0x14c drivers/infiniband/sw/rxe/rxe.c:234 nldev_newlink+0x280/0x4b4 drivers/infiniband/core/nldev.c:1797 rdma_nl_rcv_msg+0x274/0x56c drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x1f0/0x328 drivers/infiniband/core/netlink.c:239 rdma_nl_rcv+0x10/0x1c drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x424/0x700 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x640/0xa50 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0xc8/0x168 net/socket.c:742 ____sys_sendmsg+0x500/0x764 net/socket.c:2592 ___sys_sendmsg+0x11c/0x19c net/socket.c:2646 __sys_sendmsg+0x114/0x19c net/socket.c:2678 __compat_sys_sendmsg net/compat.c:346 [inline] __do_compat_sys_sendmsg net/compat.c:353 [inline] __se_compat_sys_sendmsg net/compat.c:350 [inline] __arm64_compat_sys_sendmsg+0x74/0xa4 net/compat.c:350