------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x62b/0x740 net/ipv4/af_inet.c:162, CPU#1: syz-executor/5758
Modules linked in:
CPU: 1 UID: 0 PID: 5758 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:inet_sock_destruct+0x62b/0x740 net/ipv4/af_inet.c:162
Code: 0f 0b 90 e9 58 fe ff ff e8 42 e2 a0 f7 90 0f 0b 90 e9 8b fe ff ff e8 34 e2 a0 f7 90 0f 0b 90 e9 b1 fe ff ff e8 26 e2 a0 f7 90 <0f> 0b 90 e9 d7 fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 95 fc
RSP: 0018:ffffc90000a08d28 EFLAGS: 00010246
RAX: ffffffff8a2513fa RBX: dffffc0000000000 RCX: ffff8880292c9f00
RDX: 0000000000000100 RSI: 0000000000000f70 RDI: 0000000000000000
RBP: 0000000000000f70 R08: ffff88801c74b5a7 R09: 1ffff110038e96b4
R10: dffffc0000000000 R11: ffffed10038e96b5 R12: ffff88801c74b300
R13: dffffc0000000000 R14: ffff88801c74b58c R15: ffffffff8feb2680
FS:  000055558b4e3500(0000) GS:ffff88812537c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5e2f3456b8 CR3: 000000007983e000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __sk_destruct+0x89/0x9d0 net/core/sock.c:2357
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core+0x78b/0x10a0 kernel/rcu/tree.c:2897
 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:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x3a/0xb0 kernel/rcu/tree.c:752
Code: e8 fb 07 fd 09 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 c7 27 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 9c 60 86 00 48 c7 c3 d8 78 3b 93 49 03 1e 48 89
RSP: 0018:ffffc9000329ea80 EFLAGS: 00000246
RAX: 1ffffffff1c4f8fb RBX: 0000000000000001 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8c291100 RDI: ffffffff8c2910c0
RBP: ffffffff8176a21f R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000329ec38 R11: ffffffff81b10630 R12: 0000000000000002
R13: ffffffff8e959a20 R14: ffffffff8e27c7d8 R15: dffffc0000000000
 trace_lock_acquire include/trace/events/lock.h:23 [inline]
 lock_acquire+0x5f/0x350 kernel/locking/lockdep.c:5831
 rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 rcu_read_lock include/linux/rcupdate.h:840 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
 unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:165
 __set_page_owner+0x8d/0x4c0 mm/page_owner.c:341
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
 prep_new_page mm/page_alloc.c:1861 [inline]
 get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
 alloc_pages_mpol+0x212/0x380 mm/mempolicy.c:2490
 alloc_frozen_pages_noprof mm/mempolicy.c:2561 [inline]
 alloc_pages_noprof+0xac/0x2a0 mm/mempolicy.c:2581
 pagetable_alloc_noprof include/linux/mm.h:3651 [inline]
 pmd_alloc_one_noprof include/asm-generic/pgalloc.h:143 [inline]
 __pmd_alloc+0x3a/0x5c0 mm/memory.c:6820
 pmd_alloc include/linux/mm.h:3567 [inline]
 copy_pmd_range+0x547f/0x5880 mm/memory.c:1388
 copy_pud_range mm/memory.c:1445 [inline]
 copy_p4d_range mm/memory.c:1469 [inline]
 copy_page_range+0xc26/0x1250 mm/memory.c:1555
 dup_mmap+0xf21/0x1d90 mm/mmap.c:1840
 dup_mm kernel/fork.c:1537 [inline]
 copy_mm+0x11a/0x480 kernel/fork.c:1589
 copy_process+0x1e4a/0x42e0 kernel/fork.c:2287
 kernel_clone+0x2d7/0x940 kernel/fork.c:2745
 __do_sys_clone kernel/fork.c:2886 [inline]
 __se_sys_clone kernel/fork.c:2870 [inline]
 __x64_sys_clone+0x1b6/0x230 kernel/fork.c:2870
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e2e5c58d2
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd544eb3b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffd544eb3b0 RCX: 00007f5e2e5c58d2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd544eb53c R08: 0000000000000000 R09: 0000000000000001
R10: 000055558b4e37d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 0000000000019f32 R15: 00007ffd544eb590
 </TASK>
----------------
Code disassembly (best guess):
   0:	e8 fb 07 fd 09       	call   0x9fd0800
   5:	89 c3                	mov    %eax,%ebx
   7:	83 f8 08             	cmp    $0x8,%eax
   a:	73 65                	jae    0x71
   c:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  13:	fc ff df
  16:	4c 8d 34 dd d0 c7 27 	lea    -0x71d83830(,%rbx,8),%r14
  1d:	8e
  1e:	4c 89 f0             	mov    %r14,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
* 2a:	74 08                	je     0x34 <-- trapping instruction
  2c:	4c 89 f7             	mov    %r14,%rdi
  2f:	e8 9c 60 86 00       	call   0x8660d0
  34:	48 c7 c3 d8 78 3b 93 	mov    $0xffffffff933b78d8,%rbx
  3b:	49 03 1e             	add    (%r14),%rbx
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89