INFO: task syz.1.55:6840 blocked for more than 144 seconds.
      Not tainted 6.15.0-rc4-syzkaller-ge0f4c8dd9d2d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.55        state:D stack:0     pid:6840  tgid:6831  ppid:6489   task_flags:0x400140 flags:0x00000011
Call trace:
 __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T)
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6860
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917
 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678
 __mutex_lock kernel/locking/mutex.c:746 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798
 rtnl_lock net/core/rtnetlink.c:80 [inline]
 rtnetlink_rcv_msg+0x5dc/0x97c net/core/rtnetlink.c:6961
 netlink_rcv_skb+0x230/0x414 net/netlink/af_netlink.c:2534
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6982
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg net/socket.c:727 [inline]
 ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566
 ___sys_sendmsg+0x204/0x278 net/socket.c:2620
 __sys_sendmsg net/socket.c:2652 [inline]
 __do_sys_sendmsg net/socket.c:2657 [inline]
 __se_sys_sendmsg net/socket.c:2655 [inline]
 __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Showing all locks held in the system:
2 locks held by kthreadd/2:
3 locks held by kworker/0:0/9:
 #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
 #1: ffff800097607bc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
 #2: ffff8000924681e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
7 locks held by kworker/u8:0/12:
4 locks held by kworker/u8:1/13:
 #0: ffff0000c183a148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
 #1: ffff800097647bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
 #2: ffff80009245b710 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x138/0x9c0 net/core/net_namespace.c:608
 #3: ffff8000924681e8 (rtnl_mutex