netlink: 12 bytes leftover after parsing attributes in process `+}[@'.
vlan3: entered promiscuous mode
==================================================================
BUG: KCSAN: assert: race in __block_task kernel/sched/sched.h:2634 [inline]
BUG: KCSAN: assert: race in dequeue_entities+0x6df/0x760 kernel/sched/fair.c:7168

race at unknown origin, with assert no writes to 0xffff8881001cb1e8 of 4 bytes by task 9269 on cpu 0:
 __block_task kernel/sched/sched.h:2634 [inline]
 dequeue_entities+0x6df/0x760 kernel/sched/fair.c:7168
 pick_next_entity kernel/sched/fair.c:5618 [inline]
 pick_task_fair kernel/sched/fair.c:8847 [inline]
 pick_next_task_fair+0x7d/0x410 kernel/sched/fair.c:8867
 __pick_next_task kernel/sched/core.c:5888 [inline]
 pick_next_task kernel/sched/core.c:6410 [inline]
 __schedule+0x27c/0x940 kernel/sched/core.c:6561
 __schedule_loop kernel/sched/core.c:6684 [inline]
 schedule+0x55/0xc0 kernel/sched/core.c:6699
 synchronize_rcu_expedited+0x611/0x7a0 kernel/rcu/tree_exp.h:991
 synchronize_net net/core/dev.c:11278 [inline]
 unregister_netdevice_many_notify+0x51c/0x11b0 net/core/dev.c:11382
 unregister_netdevice_many+0x19/0x20 net/core/dev.c:11461
 rtnl_newlink_create net/core/rtnetlink.c:3541 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3730 [inline]
 rtnl_newlink+0x140c/0x1690 net/core/rtnetlink.c:3743
 rtnetlink_rcv_msg+0x6aa/0x710 net/core/rtnetlink.c:6646
 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2550
 rtnetlink_rcv+0x1c/0x30 net/core/rtnetlink.c:6664
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x140/0x180 net/socket.c:745
 ____sys_sendmsg+0x312/0x410 net/socket.c:2603
 ___sys_sendmsg net/socket.c:2657 [inline]
 __sys_sendmsg+0x1dd/0x270 net/socket.c:2686
 __do_sys_sendmsg net/socket.c:2695 [inline]
 __se_sys_sendmsg net/socket.c:2693 [inline]
 __x64_sys_sendmsg+0x46/0x50 net/socket.c:2693
 x64_sys_call+0x2689/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 9269 Comm: +}[@ Tainted: G        W          6.11.0-syzkaller-07341-gbaeb9a7d8b60 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
==================================================================