==================================================================
BUG: KCSAN: data-race in pollwake / pollwake

write to 0xffffc90000f4fc20 of 4 bytes by task 8418 on cpu 0:
 __pollwake fs/select.c:198 [inline]
 pollwake+0xbe/0x110 fs/select.c:218
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock kernel/sched/wait.c:106 [inline]
 __wake_up_sync_key+0x50/0x80 kernel/sched/wait.c:173
 sock_def_readable+0x70/0x1b0 net/core/sock.c:3343
 __netlink_sendskb net/netlink/af_netlink.c:1288 [inline]
 netlink_broadcast_deliver net/netlink/af_netlink.c:1418 [inline]
 do_one_broadcast net/netlink/af_netlink.c:1505 [inline]
 netlink_broadcast_filtered+0x975/0xbd0 net/netlink/af_netlink.c:1550
 nlmsg_multicast_filtered include/net/netlink.h:1111 [inline]
 nlmsg_multicast include/net/netlink.h:1130 [inline]
 nlmsg_notify+0xca/0x170 net/netlink/af_netlink.c:2586
 rtnl_notify net/core/rtnetlink.c:766 [inline]
 rtmsg_ifinfo_send+0x86/0x90 net/core/rtnetlink.c:4099
 unregister_netdevice_many_notify+0xa5e/0xf00 net/core/dev.c:11106
 unregister_netdevice_many net/core/dev.c:11139 [inline]
 unregister_netdevice_queue+0x1f4/0x220 net/core/dev.c:11019
 unregister_netdevice include/linux/netdevice.h:3195 [inline]
 ieee802154_if_remove+0x100/0x150 net/mac802154/iface.c:691
 ieee802154_del_iface_deprecated+0x1c/0x20 net/mac802154/cfg.c:38
 rdev_del_virtual_intf_deprecated net/ieee802154/rdev-ops.h:24 [inline]
 ieee802154_add_iface+0x345/0x460 net/ieee802154/nl-phy.c:256
 genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline]
 genl_rcv_msg+0x627/0x6c0 net/netlink/genetlink.c:1208
 netlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2543
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217
 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
 netlink_unicast+0x589/0x660 net/netlink/af_netlink.c:1367
 netlink_sendmsg+0x66e/0x770 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x37c/0x4d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x1e9/0x270 net/socket.c:2667
 __do_sys_sendmsg net/socket.c:2676 [inline]
 __se_sys_sendmsg net/socket.c:2674 [inline]
 __x64_sys_sendmsg+0x46/0x50 net/socket.c:2674
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

write to 0xffffc90000f4fc20 of 4 bytes by task 2817 on cpu 1:
 __pollwake fs/select.c:198 [inline]
 pollwake+0xbe/0x110 fs/select.c:218
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock kernel/sched/wait.c:106 [inline]
 __wake_up_sync_key+0x50/0x80 kernel/sched/wait.c:173
 sock_def_readable+0x70/0x1b0 net/core/sock.c:3343
 unix_dgram_sendmsg+0xd8b/0x1150 net/unix/af_unix.c:2112
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 sock_write_iter+0x1aa/0x230 net/socket.c:1160
 do_iter_readv_writev+0x2b0/0x330
 vfs_writev+0x2e9/0x860 fs/read_write.c:971
 do_writev+0xf8/0x220 fs/read_write.c:1018
 __do_sys_writev fs/read_write.c:1091 [inline]
 __se_sys_writev fs/read_write.c:1088 [inline]
 __x64_sys_writev+0x45/0x50 fs/read_write.c:1088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 2817 Comm: dhcpcd Not tainted 6.8.0-rc4-syzkaller-00014-g7e90b5c295ec #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
==================================================================