INFO: task kworker/u4:1:136 blocked for more than 143 seconds.
      Not tainted 5.15.161-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1    state:D stack:    0 pid:  136 ppid:     2 flags:0x00000008
Workqueue: netns cleanup_net
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0xf10/0x1e48 kernel/sched/core.c:6376
 schedule+0x11c/0x1c8 kernel/sched/core.c:6459
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6518
 __mutex_lock_common+0xba0/0x2154 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72
 cangw_pernet_exit+0x1c/0x38 net/can/gw.c:1244
 ops_exit_list net/core/net_namespace.c:172 [inline]
 cleanup_net+0x568/0x9bc net/core/net_namespace.c:599