================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffff88807428c0a8 (&p->tcfa_lock){+.?.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff88807428c0a8 (&p->tcfa_lock){+.?.}-{3:3}, at: est_fetch_counters net/core/gen_estimator.c:67 [inline]
ffff88807428c0a8 (&p->tcfa_lock){+.?.}-{3:3}, at: est_timer+0xd4/0x9f0 net/core/gen_estimator.c:83
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
  __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
  _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
  spin_lock include/linux/spinlock.h:351 [inline]
  tcf_nat_init+0x50a/0x920 net/sched/act_nat.c:98
  tcf_action_init_1+0x460/0x6d0 net/sched/act_api.c:1431
  tcf_action_init+0x2cf/0xab0 net/sched/act_api.c:1506
  tcf_action_add net/sched/act_api.c:2100 [inline]
  tc_ctl_action+0x430/0xbd0 net/sched/act_api.c:2157
  rtnetlink_rcv_msg+0x77c/0xb70 net/core/rtnetlink.c:6955
  netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2552
  netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
  netlink_unicast+0x82c/0x9e0 net/netlink/af_netlink.c:1346
  netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
  sock_sendmsg_nosec net/socket.c:714 [inline]
  __sock_sendmsg+0x21c/0x270 net/socket.c:729
  ____sys_sendmsg+0x505/0x830 net/socket.c:2614
  ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668
  __sys_sendmsg net/socket.c:2700 [inline]
  __do_sys_sendmsg net/socket.c:2705 [inline]
  __se_sys_sendmsg net/socket.c:2703 [inline]
  __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703
  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
  do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
  entry_SYSCALL_64_after_hwframe+0x77/0x7f
irq event stamp: 376582
hardirqs last  enabled at (376582): [<ffffffff8b7cdeb3>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
hardirqs last  enabled at (376582): [<ffffffff8b7cdeb3>] _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202
hardirqs last disabled at (376581): [<ffffffff8b7cdc2d>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
hardirqs last disabled at (376581): [<ffffffff8b7cdc2d>] _raw_spin_lock_irq+0x7d/0xf0 kernel/locking/spinlock.c:170
softirqs last  enabled at (376324): [<ffffffff8184f4da>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last  enabled at (376324): [<ffffffff8184f4da>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last  enabled at (376324): [<ffffffff8184f4da>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
softirqs last disabled at (376579): [<ffffffff8184f4da>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last disabled at (376579): [<ffffffff8184f4da>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last disabled at (376579): [<ffffffff8184f4da>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680

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

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

 *** DEADLOCK ***

1 lock held by swapper/1/0:
 #0: ffffc90000a08be0 ((&est->timer)){+.-.}-{0:0}, at: call_timer_fn+0xbe/0x5f0 kernel/time/timer.c:1744

stack backtrace:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <IRQ>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_usage_bug+0x297/0x2e0 kernel/locking/lockdep.c:4042
 valid_state+0xc3/0xf0 kernel/locking/lockdep.c:4056
 mark_lock_irq+0x36/0x390 kernel/locking/lockdep.c:4267
 mark_lock+0x11b/0x190 kernel/locking/lockdep.c:4753
 mark_usage kernel/locking/lockdep.c:-1 [inline]
 __lock_acquire+0x680/0xd20 kernel/locking/lockdep.c:5191
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 est_fetch_counters net/core/gen_estimator.c:67 [inline]
 est_timer+0xd4/0x9f0 net/core/gen_estimator.c:83
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: 53 e7 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d f3 e6 0d 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000197de0 EFLAGS: 000002c2
RAX: ec774ea28d132500 RBX: ffffffff819683c8 RCX: ec774ea28d132500
RDX: 0000000000000001 RSI: ffffffff8d9b95f7 RDI: ffffffff8be33800
RBP: ffffc90000197f20 R08: ffff8880b8732f9b R09: 1ffff110170e65f3
R10: dffffc0000000000 R11: ffffed10170e65f4 R12: ffffffff8fa38c30
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff110039d5b40
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:757
 default_idle_call+0x74/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:190 [inline]
 do_idle+0x1e8/0x510 kernel/sched/idle.c:330
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428
 start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:315
 common_startup_64+0x13e/0x147
 </TASK>
----------------
Code disassembly (best guess):
   0:	53                   	push   %rbx
   1:	e7 02                	out    %eax,$0x2
   3:	00 cc                	add    %cl,%ah
   5:	cc                   	int3
   6:	cc                   	int3
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	f3 0f 1e fa          	endbr64
  1b:	66 90                	xchg   %ax,%ax
  1d:	0f 00 2d f3 e6 0d 00 	verw   0xde6f3(%rip)        # 0xde717
  24:	f3 0f 1e fa          	endbr64
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	c3                   	ret <-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop