------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x653/0x800 net/ipv4/af_inet.c:162, CPU#3: syz.0.38/5995
Modules linked in:
CPU: 3 UID: 0 PID: 5995 Comm: syz.0.38 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:inet_sock_destruct+0x653/0x800 net/ipv4/af_inet.c:162
Code: 4e 4d ff e9 06 fd ff ff e8 1a 86 fd f7 90 0f 0b 90 e9 35 fe ff ff e8 0c 86 fd f7 90 0f 0b 90 e9 c5 fe ff ff e8 fe 85 fd f7 90 <0f> 0b 90 e9 04 ff ff ff e8 f0 85 fd f7 90 0f 0b 90 e9 65 fe ff ff
RSP: 0018:ffffc900006f8da8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88803f7e1980 RCX: ffffffff8a0b29a7
RDX: ffff88802b720000 RSI: ffffffff8a0b2aa2 RDI: ffff88802b720000
RBP: 0000000000000090 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000090 R11: 0000000000000000 R12: ffff88803f7e1980
R13: ffff88803f7e1a10 R14: ffffffff81ee353d R15: 0000000000000001
FS:  00007f3e655016c0(0000) GS:ffff8880d666a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e65500ff8 CR3: 000000003083d000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 __sk_destruct+0x85/0xab0 net/core/sock.c:2352
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
 handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622
 do_softirq kernel/softirq.c:523 [inline]
 do_softirq+0xac/0xe0 kernel/softirq.c:510
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:450
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 xdp_test_run_batch.constprop.0+0x1433/0x1ca0 net/bpf/test_run.c:357
 bpf_test_run_xdp_live+0x367/0x760 net/bpf/test_run.c:379
 bpf_prog_test_run_xdp+0xd7d/0x1670 net/bpf/test_run.c:1430
 bpf_prog_test_run kernel/bpf/syscall.c:4742 [inline]
 __sys_bpf+0x1725/0x4b90 kernel/bpf/syscall.c:6266
 __do_sys_bpf kernel/bpf/syscall.c:6361 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6359 [inline]
 __x64_sys_bpf+0x7b/0xc0 kernel/bpf/syscall.c:6359
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e6459ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3e65501028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f3e64816090 RCX: 00007f3e6459ce59
RDX: 0000000000000048 RSI: 0000200000000600 RDI: 000000000000000a
RBP: 00007f3e64632d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e64816128 R14: 00007f3e64816090 R15: 00007ffcdf090478
 </TASK>