================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
syz.1.3044/18127 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffff8880446340a8 (&p->tcfa_lock){+.?.}-{3:3}, at: est_timer+0xd4/0x9f0
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire+0x120/0x360
  _raw_spin_lock+0x2e/0x40
  tunnel_key_init+0xd10/0x14d0
  tcf_action_init_1+0x463/0x6d0
  tcf_action_init+0x2cf/0xab0
  tc_ctl_action+0x430/0xbd0
  rtnetlink_rcv_msg+0x77c/0xb70
  netlink_rcv_skb+0x208/0x470
  netlink_unicast+0x82f/0x9e0
  netlink_sendmsg+0x805/0xb30
  __sock_sendmsg+0x21c/0x270
  ____sys_sendmsg+0x505/0x830
  ___sys_sendmsg+0x21f/0x2a0
  __x64_sys_sendmsg+0x19b/0x260
  do_syscall_64+0xfa/0x3b0
  entry_SYSCALL_64_after_hwframe+0x77/0x7f
irq event stamp: 4798
hardirqs last  enabled at (4798): [<ffffffff8b7cceb3>] _raw_spin_unlock_irq+0x23/0x50
hardirqs last disabled at (4797): [<ffffffff8b7ccc2d>] _raw_spin_lock_irq+0x7d/0xf0
softirqs last  enabled at (4784): [<ffffffff89642141>] __dev_change_flags+0x1a1/0x6d0
softirqs last disabled at (4795): [<ffffffff8184f4da>] __irq_exit_rcu+0xca/0x1f0

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&p->tcfa_lock);
  <Interrupt>
    lock(&p->tcfa_lock);

 *** DEADLOCK ***

4 locks held by syz.1.3044/18127:
 #0: ffffffff8f538d48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70
 #1: ffffffff8e12e180 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x120
 #2: ffffffff8e015a50 (console_srcu){....}-{0:0}, at: console_flush_all+0x13a/0xc40
 #3: ffffc90000007be0 ((&est->timer)){+.-.}-{0:0}, at: call_timer_fn+0xbe/0x5f0

stack backtrace:
CPU: 0 UID: 0 PID: 18127 Comm: syz.1.3044 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:
 <IRQ>
 dump_stack_lvl+0x189/0x250
 print_usage_bug+0x297/0x2e0
 valid_state+0xc3/0xf0
 mark_lock_irq+0x36/0x390
 mark_lock+0x11b/0x190
 __lock_acquire+0x680/0xd20
 lock_acquire+0x120/0x360
 _raw_spin_lock+0x2e/0x40
 est_timer+0xd4/0x9f0
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:console_flush_all+0x7f7/0xc40
Code: 48 21 c3 0f 85 e9 01 00 00 e8 65 49 1f 00 48 8b 5c 24 20 4d 85 f6 75 07 e8 56 49 1f 00 eb 06 e8 4f 49 1f 00 fb 48 8b 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 da b9 82 00 48 8b 1b 48 8b 44 24
RSP: 0018:ffffc9000a84e500 EFLAGS: 00000283
RAX: 1ffffffff1d3685f RBX: ffffffff8e9b42f8 RCX: 0000000000080000
RDX: ffffc900086d1000 RSI: 0000000000000575 RDI: 0000000000000576
RBP: ffffc9000a84e650 R08: ffffffff8fa39337 R09: 1ffffffff1f47266
R10: dffffc0000000000 R11: fffffbfff1f47267 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000200 R15: ffffffff8e9b42a0
 console_unlock+0xc4/0x270
 vprintk_emit+0x5b7/0x7a0
 _printk+0xcf/0x120
 netdev_info+0x10a/0x160
 netif_set_allmulti+0x1b8/0x380
 __dev_change_flags+0x52e/0x6d0
 netif_change_flags+0x88/0x1a0
 do_setlink+0xc55/0x41c0
 rtnl_newlink+0x160b/0x1c70
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdcd358ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdcd4371038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fdcd37c5fa0 RCX: 00007fdcd358ebe9
RDX: 0000000024044800 RSI: 0000200000000180 RDI: 0000000000000003
RBP: 00007fdcd3611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdcd37c6038 R14: 00007fdcd37c5fa0 R15: 00007ffef8d753e8
 </TASK>
