INFO: task syz.3.5285:32463 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.5285      state:D stack:28832 pid:32463 tgid:32448 ppid:10574  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 __lock_sock+0x161/0x2c0
 lock_sock_nested+0x9f/0x100
 do_tcp_setsockopt+0x1d2/0x2060
 do_sock_setsockopt+0x17c/0x1b0
 __x64_sys_setsockopt+0x13d/0x1b0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5d4fd9c819
RSP: 002b:00007f5d50c88028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f5d50016180 RCX: 00007f5d4fd9c819
RDX: 000000000000000d RSI: 0000000000000006 RDI: 0000000000000008
RBP: 00007f5d4fe32c91 R08: 0000000000000003 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d50016218 R14: 00007f5d50016180 R15: 00007ffda5b528b8
 </TASK>
INFO: task syz.3.5285:32466 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.5285      state:D stack:28832 pid:32466 tgid:32448 ppid:10574  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 __lock_sock+0x161/0x2c0
 lock_sock_nested+0x9f/0x100
 tcp_recvmsg+0x1f2/0x7f0
 inet_recvmsg+0x157/0x270
 sock_recvmsg+0x155/0x1b0
 __sys_recvfrom+0x240/0x3c0
 __x64_sys_recvfrom+0xde/0x100
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5d4fd9c819
RSP: 002b:00007f5d50c67028 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
RAX: ffffffffffffffda RBX: 00007f5d50016270 RCX: 00007f5d4fd9c819
RDX: fffffffffffffd0b RSI: 0000200000000080 RDI: 0000000000000008
RBP: 00007f5d4fe32c91 R08: 0000000000000000 R09: fffffffffffffd25
R10: 0000000000000720 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d50016308 R14: 00007f5d50016270 R15: 00007ffda5b528b8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e75e5a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5637:
 #0: ffff888112ff60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
4 locks held by kworker/u8:4/5916:
 #0: ffff8881012ae148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90006e2fc40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8fbc2730 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x800
 #3: ffffffff8e7648b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
10 locks held by kworker/0:10/11869:
3 locks held by kworker/0:11/11870:
 #0: ffff88810006b148 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc900065bfc40 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8e764780 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x580
2 locks held by kworker/1:12/11875:
 #0: ffff88810006b148 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc9000660fc40 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
2 locks held by kworker/0:0/30914:
 #0: ffff88812103ae60 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150
 #1: ffff888121024588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880
5 locks held by syz.3.5285/32451:
1 lock held by syz.3.5285/32463:
 #0: ffff8881157fc360 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt+0x1d2/0x2060
1 lock held by syz.3.5285/32466:
 #0: ffff8881157fc360 (sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_recvmsg+0x1f2/0x7f0
1 lock held by syz.0.5850/3063:
1 lock held by syz.7.5851/3066:
3 locks held by syz.5.5852/3068:

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 26899 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker
RIP: 0010:lock_acquire+0x10d/0x2e0
Code: b4 24 88 00 00 00 41 56 e8 80 02 00 00 48 83 c4 28 48 c7 c7 2f d2 16 8e e8 80 85 0e 0a b8 ff ff ff ff 65 0f c1 05 63 9d 7b 11 <83> f8 01 0f 85 b0 00 00 00 9c 58 a9 00 02 00 00 0f 85 c3 00 00 00
RSP: 0018:ffffc90000006e40 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000246 RCX: 0000000080000102
RDX: 000000008b579b25 RSI: ffffffff8e16d22f RDI: ffffffff8c27d580
RBP: 0000000000000000 R08: ffffffff81768a55 R09: ffffffff8e75e5a0
R10: ffffc90000006fd8 R11: ffffffff81b0dc10 R12: 0000000000000002
R13: ffffffff8e75e5a0 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88818de51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d229456b8 CR3: 000000011327c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x187/0x630
 tcp_data_queue+0x1370/0x5e50
 tcp_rcv_established+0xf45/0x2740
 tcp_v4_do_rcv+0xa90/0x1430
 tcp_v4_rcv+0x2825/0x31f0
 ip_protocol_deliver_rcu+0x221/0x440
 ip_local_deliver_finish+0x3bb/0x6f0
 NF_HOOK+0x336/0x3c0
 NF_HOOK+0x336/0x3c0
 process_backlog+0xaa3/0x1950
 __napi_poll+0xae/0x340
 net_rx_action+0x627/0xf70
 handle_softirqs+0x22a/0x870
 do_softirq+0x76/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130
 wg_index_hashtable_insert+0x811/0x880
 wg_noise_handshake_create_initiation+0x64e/0x830
 wg_packet_handshake_send_worker+0x18d/0x350
 process_scheduled_works+0xb6e/0x18c0
 worker_thread+0xa53/0xfc0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
