------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x62d/0x740, CPU#1: syz-executor/5629
Modules linked in:
CPU: 1 UID: 0 PID: 5629 Comm: syz-executor 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
RIP: 0010:inet_sock_destruct+0x62d/0x740
Code: 0f 0b 90 e9 58 fe ff ff e8 e0 2e 9f f7 90 0f 0b 90 e9 8b fe ff ff e8 d2 2e 9f f7 90 0f 0b 90 e9 b1 fe ff ff e8 c4 2e 9f 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:ffffc90000a08d20 EFLAGS: 00010246
RAX: ffffffff8a2674ec RBX: dffffc0000000000 RCX: ffff88816abf5880
RDX: 0000000000000100 RSI: 0000000000000f70 RDI: 0000000000000000
RBP: 0000000000000f70 R08: ffff888112a92d27 R09: 1ffff110225525a4
R10: dffffc0000000000 R11: ffffed10225525a5 R12: ffff888112a92a80
R13: ffff888112a92f88 R14: ffff888112a92d0c R15: ffffffff8fead5c0
FS:  000055555dc1c500(0000) GS:ffff8882a9293000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7cdfeb078 CR3: 000000016acb8000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __sk_destruct+0x8d/0x9d0
 rcu_core+0x7cd/0x1070
 handle_softirqs+0x22a/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 1d a5 f7 f5 f7 c3 00 02 00 00 74 05 e8 f0 2f 23 f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 64 27 e9 f5 65 8b 05 ed 30 8e 07 85 c0 74 18 5b 41 5e e9 51 48
RSP: 0018:ffffc900069a7538 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000292 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dfa7966 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff90309cf7 R09: 1ffffffff206139e
R10: dffffc0000000000 R11: fffffbfff206139f R12: ffff8881a37b5000
R13: ffff8881a37b4000 R14: ffffffff9a6593d0 R15: 0000000000000001
 debug_check_no_obj_freed+0x52e/0x550
 __free_frozen_pages+0x593/0xd30
 __kasan_populate_vmalloc+0x137/0x1d0
 alloc_vmap_area+0xd47/0x1480
 __get_vm_area_node+0x1f8/0x300
 __vmalloc_node_range_noprof+0x36a/0x1750
 vzalloc_noprof+0xb2/0xe0
 __do_replace+0xb3/0x990
 do_ipt_set_ctl+0xb45/0xe00
 nf_setsockopt+0x26f/0x290
 do_sock_setsockopt+0x17c/0x1b0
 __x64_sys_setsockopt+0x13d/0x1b0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7cdd9e69a
Code: 48 83 ec 10 48 63 c9 48 63 ff 45 89 c9 6a 2c e8 6c 99 fb ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7
RSP: 002b:00007ffdec679bc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ffdec679c50 RCX: 00007fb7cdd9e69a
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000408 R09: ffffffffff000000
R10: 00007fb7cdfebda0 R11: 0000000000000202 R12: 00007fb7cdfebd40
R13: 00007ffdec679bec R14: 0000000000000000 R15: 00007fb7cdfed180
 </TASK>
