INFO: task syz-executor.1:15941 blocked for more than 143 seconds.
      Tainted: G        W          6.10.0-rc2-next-20240605-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:26112 pid:15941 tgid:15936 ppid:14468  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5192 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 nfsd_nl_rpc_status_get_start+0x8d/0xe0 fs/nfsd/nfsctl.c:1476
 genl_start+0x4d6/0x6d0 net/netlink/genetlink.c:1005
 __netlink_dump_start+0x45c/0x780 net/netlink/af_netlink.c:2445
 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:1076 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1192 [inline]
 genl_rcv_msg+0x88c/0xec0 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2585
 ___sys_sendmsg net/socket.c:2639 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2668
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f32efa7cee9
RSP: 002b:00007f32ef5ff0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f32efbb4050 RCX: 00007f32efa7cee9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000008
RBP: 00007f32efada6fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f32efbb4050 R15: 00007ffeded24298
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/0:1/9:
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
 #1: ffffc900000e7d00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
 #1: ffffc900000e7d00 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G        W          6.10.0-rc2-next-20240605-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:91 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
 check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
 nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
 nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
 debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
 check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
 watchdog+0xf9a/0x1020 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
1 lock held by khungtaskd/30: