syzbot

==================================================================
BUG: KCSAN: data-race in ipvlan_open / is_upper_ndev_bond_master_filter

read-write to 0xffff8881084f50c0 of 4 bytes by task 17268 on cpu 1:
 ipvlan_open+0x6f/0xe0
 __dev_open+0x281/0x3a0 net/core/dev.c:1417
 __dev_change_flags+0x159/0x400 net/core/dev.c:8527
 rtnl_configure_link net/core/rtnetlink.c:3260 [inline]
 rtnl_newlink_create net/core/rtnetlink.c:3448 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3657 [inline]
 rtnl_newlink+0x114b/0x15a0 net/core/rtnetlink.c:3670
 rtnetlink_rcv_msg+0x807/0x8c0 net/core/rtnetlink.c:6174
 netlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2574
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6192
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x56f/0x640 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x665/0x770 net/netlink/af_netlink.c:1942
 sock_sendmsg_nosec net/socket.c:722 [inline]
 sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x375/0x4c0 net/socket.c:2504
 ___sys_sendmsg net/socket.c:2558 [inline]
 __sys_sendmsg+0x1e3/0x270 net/socket.c:2587
 __do_sys_sendmsg net/socket.c:2596 [inline]
 __se_sys_sendmsg net/socket.c:2594 [inline]
 __x64_sys_sendmsg+0x46/0x50 net/socket.c:2594
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff8881084f50c0 of 4 bytes by task 9303 on cpu 0:
 netif_is_bond_master include/linux/netdevice.h:5031 [inline]
 is_upper_ndev_bond_master_filter+0x2b/0xb0 drivers/infiniband/core/roce_gid_mgmt.c:275
 ib_enum_roce_netdev+0x120/0x1c0 drivers/infiniband/core/device.c:2305
 ib_enum_all_roce_netdevs+0x8a/0xf0 drivers/infiniband/core/device.c:2334
 netdevice_event_work_handler+0x67/0x3c0 drivers/infiniband/core/roce_gid_mgmt.c:627
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2390
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2537
 kthread+0x1ac/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x00000002 -> 0x00000083

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 9303 Comm: kworker/u4:2 Not tainted 6.2.0-syzkaller-13534-gb01fe98d34f3-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: gid-cache-wq netdevice_event_work_handler
==================================================================