Unknown status report in ack skb
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WARNING: CPU: 1 PID: 18818 at net/ipv4/af_inet.c:156 inet_sock_destruct+0x623/0x730 net/ipv4/af_inet.c:156
Modules linked in:
CPU: 1 UID: 0 PID: 18818 Comm: syz.2.4231 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:inet_sock_destruct+0x623/0x730 net/ipv4/af_inet.c:156
Code: 0f 0b 90 e9 62 fe ff ff e8 fa 4e bc f7 90 0f 0b 90 e9 95 fe ff ff e8 ec 4e bc f7 90 0f 0b 90 e9 bb fe ff ff e8 de 4e bc f7 90 <0f> 0b 90 e9 e1 fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 9f fc
RSP: 0018:ffffc90000a08b48 EFLAGS: 00010246
RAX: ffffffff8a035cb2 RBX: dffffc0000000000 RCX: ffff88804cb2bc00
RDX: 0000000000000100 RSI: 0000000000000fff RDI: 0000000000000000
RBP: 0000000000000fff R08: ffff8880505b611f R09: 1ffff1100a0b6c23
R10: dffffc0000000000 R11: ffffed100a0b6c24 R12: ffff8880505b5e80
R13: dffffc0000000000 R14: ffff8880505b6104 R15: 1ffff1100a0b6bd2
FS:  0000000000000000(0000) GS:ffff888125d18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000003c0 CR3: 0000000050294000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __sk_destruct+0x86/0x660 net/core/sock.c:2339
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 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:check_preemption_disabled+0x25/0x120 lib/smp_processor_id.c:16
Code: 90 90 90 90 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 05 be ae 26 07 48 89 44 24 08 65 8b 05 c6 ae 26 07 65 8b 0d bb ae 26 07 <f7> c1 ff ff ff 7f 74 23 65 48 8b 0d 9b ae 26 07 48 3b 4c 24 08 0f
RSP: 0018:ffffc900104d72b0 EFLAGS: 00000282
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8be337e0 RDI: ffffffff8be337a0
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff822e4617
R10: dffffc0000000000 R11: fffff940002feff9 R12: 000000000005fdff
R13: dffffc0000000000 R14: ffff88813fffa570 R15: 0000000000001000
 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
 rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:751
 rcu_read_lock_held_common kernel/rcu/update.c:109 [inline]
 rcu_read_lock_held+0x15/0x50 kernel/rcu/update.c:349
 lookup_page_ext mm/page_ext.c:254 [inline]
 page_ext_lookup+0xe7/0x180 mm/page_ext.c:509
 page_ext_iter_begin include/linux/page_ext.h:132 [inline]
 page_table_check_clear+0x278/0x700 mm/page_table_check.c:78
 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:725 [inline]
 zap_present_folio_ptes mm/memory.c:1499 [inline]
 zap_present_ptes mm/memory.c:1581 [inline]
 do_zap_pte_range mm/memory.c:1682 [inline]
 zap_pte_range mm/memory.c:1726 [inline]
 zap_pmd_range mm/memory.c:1818 [inline]
 zap_pud_range mm/memory.c:1847 [inline]
 zap_p4d_range mm/memory.c:1868 [inline]
 unmap_page_range+0x3445/0x4370 mm/memory.c:1889
 unmap_single_vma mm/memory.c:1932 [inline]
 unmap_vmas+0x399/0x580 mm/memory.c:1976
 exit_mmap+0x248/0xb50 mm/mmap.c:1280
 __mmput+0x118/0x420 kernel/fork.c:1130
 exit_mm+0x1da/0x2c0 kernel/exit.c:582
 do_exit+0x648/0x2300 kernel/exit.c:949
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
 get_signal+0x1286/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb43438ebe9
Code: Unable to access opcode bytes at 0x7fb43438ebbf.
RSP: 002b:00007fb4352ab0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fb4345b5fa8 RCX: 00007fb43438ebe9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fb4345b5fac
RBP: 00007fb4345b5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000090 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb4345b6038 R14: 00007ffdd5a401a0 R15: 00007ffdd5a40288
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	55                   	push   %rbp
   6:	41 57                	push   %r15
   8:	41 56                	push   %r14
   a:	53                   	push   %rbx
   b:	48 83 ec 10          	sub    $0x10,%rsp
   f:	65 48 8b 05 be ae 26 	mov    %gs:0x726aebe(%rip),%rax        # 0x726aed5
  16:	07
  17:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  1c:	65 8b 05 c6 ae 26 07 	mov    %gs:0x726aec6(%rip),%eax        # 0x726aee9
  23:	65 8b 0d bb ae 26 07 	mov    %gs:0x726aebb(%rip),%ecx        # 0x726aee5
* 2a:	f7 c1 ff ff ff 7f    	test   $0x7fffffff,%ecx <-- trapping instruction
  30:	74 23                	je     0x55
  32:	65 48 8b 0d 9b ae 26 	mov    %gs:0x726ae9b(%rip),%rcx        # 0x726aed5
  39:	07
  3a:	48 3b 4c 24 08       	cmp    0x8(%rsp),%rcx
  3f:	0f                   	.byte 0xf