INFO: task syz.3.124:4585 blocked for more than 143 seconds.
      Not tainted 6.1.94-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.124       state:D stack:0     pid:4585  ppid:4231   flags:0x00000001
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xee4/0x1c98 kernel/sched/core.c:6558
 schedule+0xc4/0x170 kernel/sched/core.c:6634
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74
 do_ipv6_setsockopt+0x3b8/0x3b8c net/ipv6/ipv6_sockglue.c:419
 ipv6_setsockopt+0x68/0x1a4 net/ipv6/ipv6_sockglue.c:1025
 udpv6_setsockopt+0xa8/0xc0 net/ipv6/udp.c:1713
 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3679
 __sys_setsockopt+0x3a8/0x70c net/socket.c:2283
 __do_sys_setsockopt net/socket.c:2294 [inline]
 __se_sys_setsockopt net/socket.c:2291 [inline]
 __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2291
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142