------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x62d/0x740, CPU#1: syz.4.21144/10512
Modules linked in:
CPU: 1 UID: 0 PID: 10512 Comm: syz.4.21144 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 a0 89 9e f7 90 0f 0b 90 e9 8b fe ff ff e8 92 89 9e f7 90 0f 0b 90 e9 b1 fe ff ff e8 84 89 9e 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: 0000:ffffc90006957c60 EFLAGS: 00010246
RAX: ffffffff8a2735ec RBX: dffffc0000000000 RCX: ffff888036fc3b00
RDX: 0000000000000100 RSI: 0000000000000090 RDI: 0000000000000000
RBP: 0000000000000090 R08: ffff8881af20f127 R09: 1ffff11035e41e24
R10: dffffc0000000000 R11: ffffed1035e41e25 R12: ffff8881af20ee80
R13: ffff8881af20f388 R14: ffff8881af20f10c R15: ffffffff8feaea80
FS:  0000555565d22500(0000) GS:ffff8882a928f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3abfe3 CR3: 000000005c2fa000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __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+0x57/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f61d7a50801
Code: 39 d0 75 dc 48 89 f0 25 ff 1f 00 00 49 89 34 c1 41 88 3c 00 31 c0 c3 66 90 41 38 3c 10 74 0b 41 88 3c 10 31 c0 49 89 34 d1 c3 <b8> 01 00 00 00 c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 7c
RSP: 002b:00007ffdb5419468 EFLAGS: 00000246
RAX: 0000000082115097 RBX: ffffffff82115096 RCX: ffffffff82115096
RDX: 0000000000001097 RSI: ffffffff82115096 RDI: 0000000000000001
RBP: 0000000000000000 R08: 00007f61d7e00000 R09: 00007f61d7e02000
R10: 000000008211509a R11: 0000000000000001 R12: 00007f61d7e16038
R13: 000000000000114e R14: ffffffff82115096 R15: 00007f61d8945720
 </TASK>
