------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: kernel/locking/lockdep.c:238 at hlock_class kernel/locking/lockdep.c:238 [inline], CPU#1: swapper/1/0
WARNING: kernel/locking/lockdep.c:238 at check_wait_context kernel/locking/lockdep.c:4854 [inline], CPU#1: swapper/1/0
WARNING: kernel/locking/lockdep.c:238 at __lock_acquire+0x382/0x2cf0 kernel/locking/lockdep.c:5187, CPU#1: swapper/1/0
Modules linked in:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline]
RIP: 0010:__lock_acquire+0x389/0x2cf0 kernel/locking/lockdep.c:5187
Code: 83 3d da 46 d6 18 00 75 27 90 e8 62 fd 2d 03 85 c0 74 1c 83 3d 8b fd b4 0e 00 75 13 48 8d 3d 0e 5a b8 0e 48 c7 c6 83 5c 35 8e <67> 48 0f b9 3a 90 31 c0 0f b6 98 c4 00 00 00 41 8b 45 20 25 ff 1f
RSP: 0018:ffffc90000a089b8 EFLAGS: 00010046
RAX: 0000000000000001 RBX: 0000000000042000 RCX: ffff88801dee8000
RDX: 0000000000000100 RSI: ffffffff8e355c83 RDI: ffffffff905b18d0
RBP: 0000000000000001 R08: ffffffff9057bc43 R09: 1ffffffff20af788
R10: dffffc0000000000 R11: fffffbfff20af789 R12: 0000000000000fab
R13: ffff88801dee8bf8 R14: ffff88801dee8000 R15: ffff88801dee8ba8
FS:  0000000000000000(0000) GS:ffff888125045000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 000000007f4ba000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
 __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:158
 spin_lock include/linux/spinlock.h:342 [inline]
 tcp_tsq_handler+0x29/0x200 net/ipv4/tcp_output.c:1291
 tcp_tsq_workfn+0x384/0x410 net/ipv4/tcp_output.c:1325
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 bh_worker+0x44e/0x840 kernel/workqueue.c:3708
 tasklet_action+0xc/0x70 kernel/softirq.c:965
 handle_softirqs+0x225/0x840 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 9b 7c 02 c3 cc cc cc cc 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 d3 3f 16 00 fb f4 <e9> 0c 08 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffc90000197e40 EFLAGS: 00000246
RAX: 000000000162e199 RBX: ffffffff819b4580 RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8e22d8f6 RDI: ffffffff8c4bd680
RBP: ffffc90000197f10 R08: ffff8880b87338db R09: 1ffff110170e671b
R10: dffffc0000000000 R11: ffffed10170e671c R12: 0000000000000000
R13: 1ffff11003bdd000 R14: 1ffff92000032fd0 R15: dffffc0000000000
 arch_safe_halt arch/x86/kernel/process.c:767 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:768
 default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x2e0/0x540 kernel/sched/idle.c:355
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
 start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
 common_startup_64+0x13e/0x157
 </TASK>
----------------
Code disassembly (best guess):
   0:	83 3d da 46 d6 18 00 	cmpl   $0x0,0x18d646da(%rip)        # 0x18d646e1
   7:	75 27                	jne    0x30
   9:	90                   	nop
   a:	e8 62 fd 2d 03       	call   0x32dfd71
   f:	85 c0                	test   %eax,%eax
  11:	74 1c                	je     0x2f
  13:	83 3d 8b fd b4 0e 00 	cmpl   $0x0,0xeb4fd8b(%rip)        # 0xeb4fda5
  1a:	75 13                	jne    0x2f
  1c:	48 8d 3d 0e 5a b8 0e 	lea    0xeb85a0e(%rip),%rdi        # 0xeb85a31
  23:	48 c7 c6 83 5c 35 8e 	mov    $0xffffffff8e355c83,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	90                   	nop
  30:	31 c0                	xor    %eax,%eax
  32:	0f b6 98 c4 00 00 00 	movzbl 0xc4(%rax),%ebx
  39:	41 8b 45 20          	mov    0x20(%r13),%eax
  3d:	25                   	.byte 0x25
  3e:	ff 1f                	lcall  *(%rdi)