audit: type=1804 audit(1616800341.250:2): pid=12081 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir726112638/syzkaller.KmXa6n/122/bus" dev="sda1" ino=14031 res=1
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
==================================================================
BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:183 [inline]
BUG: KASAN: use-after-free in deliver_ptype_list_skb net/core/dev.c:1888 [inline]
BUG: KASAN: use-after-free in __netif_receive_skb_core+0x23e1/0x2a30 net/core/dev.c:4462
Read of size 8 at addr ffff8880aa91f628 by task syz-executor.4/12083

CPU: 0 PID: 12083 Comm: syz-executor.4 Not tainted 4.14.227-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430
 __read_once_size include/linux/compiler.h:183 [inline]
 deliver_ptype_list_skb net/core/dev.c:1888 [inline]
 __netif_receive_skb_core+0x23e1/0x2a30 net/core/dev.c:4462
 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512
 process_backlog+0x218/0x6f0 net/core/dev.c:5194
 napi_poll net/core/dev.c:5596 [inline]
 net_rx_action+0x466/0xfd0 net/core/dev.c:5662
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192
RSP: 0018:ffff88804710f508 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e1259 RBX: 0000000000000286 RCX: 1ffff11015860d5d
RDX: dffffc0000000000 RSI: ffff8880ac306af0 RDI: 0000000000000286
RBP: ffffffff88f7a120 R08: ffff8880ba52ac30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88809cd6eae8 R14: 0000000000000000 R15: ffff88804710f560
 __rcu_read_unlock+0x158/0x160 kernel/rcu/update.c:260
 rcu_read_unlock include/linux/rcupdate.h:684 [inline]
 inet6_csk_xmit+0x2a0/0x4d0 net/ipv6/inet6_connection_sock.c:141
 __tcp_transmit_skb+0x17e2/0x2cb0 net/ipv4/tcp_output.c:1133
 tcp_transmit_skb net/ipv4/tcp_output.c:1149 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:3495 [inline]
 tcp_connect+0x1e15/0x3f00 net/ipv4/tcp_output.c:3533
 tcp_v6_connect+0x13cc/0x1ad0 net/ipv6/tcp_ipv6.c:305
 __inet_stream_connect+0x6ad/0xb90 net/ipv4/af_inet.c:618
 tcp_sendmsg_fastopen net/ipv4/tcp.c:1170 [inline]
 tcp_sendmsg_locked+0x1fac/0x2ef0 net/ipv4/tcp.c:1216
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 SYSC_sendto net/socket.c:1763 [inline]
 SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x466459
RSP: 002b:00007f55c3090188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000466459
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000a
RBP: 00000000004bf9fb R08: 0000000020000280 R09: 000000000000001c
R10: 0000000020000004 R11: 0000000000000246 R12: 000000000056c0b0
R13: 00007ffd273d045f R14: 00007f55c3090300 R15: 0000000000022000

Allocated by task 12044:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 __do_kmalloc mm/slab.c:3720 [inline]
 __kmalloc+0x15a/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 sk_prot_alloc+0x1ba/0x290 net/core/sock.c:1467
 sk_alloc+0x36/0xcd0 net/core/sock.c:1521
 packet_create+0xf5/0x7f0 net/packet/af_packet.c:3295
 __sock_create+0x303/0x620 net/socket.c:1275
 sock_create net/socket.c:1315 [inline]
 SYSC_socket net/socket.c:1345 [inline]
 SyS_socket+0xd1/0x1b0 net/socket.c:1325
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

Freed by task 12043:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kfree+0xc9/0x250 mm/slab.c:3815
 sk_prot_free net/core/sock.c:1504 [inline]
 __sk_destruct+0x5e3/0x760 net/core/sock.c:1582
 sk_destruct net/core/sock.c:1597 [inline]
 __sk_free+0xd9/0x2d0 net/core/sock.c:1605
 sk_free+0x2b/0x40 net/core/sock.c:1616
 sock_put include/net/sock.h:1662 [inline]
 packet_release+0x837/0xa80 net/packet/af_packet.c:3124
 __sock_release+0xcd/0x2b0 net/socket.c:602
 sock_close+0x15/0x20 net/socket.c:1139
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

The buggy address belongs to the object at ffff8880aa91ee40
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 2024 bytes inside of
 2048-byte region [ffff8880aa91ee40, ffff8880aa91f640)
The buggy address belongs to the page:
page:ffffea0002aa4780 count:1 mapcount:0 mapping:ffff8880aa91e5c0 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff8880aa91e5c0 0000000000000000 0000000100000003
raw: ffffea00011d83a0 ffffea00024ea720 ffff88813fe80c40 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880aa91f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880aa91f580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880aa91f600: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                                  ^
 ffff8880aa91f680: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff8880aa91f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================