------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x62d/0x740, CPU#0: cmp/18963
Modules linked in:
CPU: 0 UID: 0 PID: 18963 Comm: cmp 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 30 03 9e f7 90 0f 0b 90 e9 8b fe ff ff e8 22 03 9e f7 90 0f 0b 90 e9 b1 fe ff ff e8 14 03 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: 0018:ffffc90000007d20 EFLAGS: 00010246
RAX: ffffffff8a27c1ac RBX: dffffc0000000000 RCX: ffff888169b13b00
RDX: 0000000000000100 RSI: 0000000000000090 RDI: 0000000000000000
RBP: 0000000000000090 R08: ffff88810ffff9a7 R09: 1ffff11021ffff34
R10: dffffc0000000000 R11: ffffed1021ffff35 R12: ffff88810ffff700
R13: ffff88810ffffc08 R14: ffff88810ffff98c R15: ffffffff8feb0900
FS:  0000000000000000(0000) GS:ffff88818dc87000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86886bf020 CR3: 000000010fb10000 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:unwind_next_frame+0x199/0x2550
Code: 44 24 38 0f b6 04 28 84 c0 0f 85 9c 1c 00 00 4c 89 6c 24 20 4c 89 7c 24 50 48 89 5c 24 18 0f b6 1b 48 8b 44 24 30 80 3c 28 00 <4c> 8b 7c 24 10 74 08 4c 89 ff e8 88 11 ba 00 4d 8b 27 48 83 f3 01
RSP: 0018:ffffc90009447838 EFLAGS: 00000246
RAX: 1ffff92001288f2a RBX: 0000000000000000 RCX: 0000000080000001
RDX: 000000005a44979c RSI: ffffffff8c28b640 RDI: ffffffff8c28b600
RBP: dffffc0000000000 R08: ffffffff8176f256 R09: ffffffff8e95cca0
R10: ffffc90009447958 R11: ffffffff81b0f020 R12: ffffc90009447940
R13: 1ffff92001288f21 R14: ffffc90009447908 R15: ffffffff8176f256
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x182/0x650
 vfs_fstatat+0x13d/0x170
 __x64_sys_newfstatat+0x151/0x200
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f86886dc8a9
Code: 49 01 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 0c f7 d8 41 83 c8 ff 89 05 a1 49 01 00
RSP: 002b:00007ffe602b0248 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007f86886f1ec0 RCX: 00007f86886dc8a9
RDX: 00007ffe602b02f0 RSI: 00007ffe602b0250 RDI: 00000000ffffff9c
RBP: 00007ffe602b03b0 R08: 0000000000080000 R09: 00007ffe602b0250
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe602b0250
R13: 0000000000000000 R14: 00007f86886eea40 R15: 00000000ffffffff
 </TASK>
