device  left promiscuous mode
øÿÿÿ: port 1() entered disabled state
dev_remove_pack: ffff8801c9d32c00 not found
==================================================================
BUG: KASAN: use-after-free in deliver_ptype_list_skb net/core/dev.c:1871 [inline]
BUG: KASAN: use-after-free in __netif_receive_skb_core+0x2be3/0x33d0 net/core/dev.c:4401
Read of size 2 at addr ffff8801c9874b00 by task syz-executor5/24962

CPU: 1 PID: 24962 Comm: syz-executor5 Not tainted 4.13.0+ #42
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 print_address_description+0x73/0x250 mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report+0x24e/0x340 mm/kasan/report.c:409
 __asan_report_load2_noabort+0x14/0x20 mm/kasan/report.c:428
 deliver_ptype_list_skb net/core/dev.c:1871 [inline]
 __netif_receive_skb_core+0x2be3/0x33d0 net/core/dev.c:4401
 __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4456
 process_backlog+0x203/0x740 net/core/dev.c:5132
 napi_poll net/core/dev.c:5530 [inline]
 net_rx_action+0x792/0x1910 net/core/dev.c:5596
 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:957
 </IRQ>
 do_softirq.part.20+0x14d/0x190 kernel/softirq.c:328
 do_softirq kernel/softirq.c:176 [inline]
 __local_bh_enable_ip+0x135/0x160 kernel/softirq.c:181
 local_bh_enable include/linux/bottom_half.h:31 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:710 [inline]
 ip_finish_output2+0x8ad/0x1460 net/ipv4/ip_output.c:231
 ip_finish_output+0x85e/0xd10 net/ipv4/ip_output.c:317
 NF_HOOK_COND include/linux/netfilter.h:238 [inline]
 ip_output+0x1cc/0x860 net/ipv4/ip_output.c:405
 dst_output include/net/dst.h:472 [inline]
 NF_HOOK include/linux/netfilter.h:249 [inline]
 raw_send_hdrinc net/ipv4/raw.c:432 [inline]
 raw_sendmsg+0x238e/0x38c0 net/ipv4/raw.c:649
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:633 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:643
 SYSC_sendto+0x358/0x5a0 net/socket.c:1750
 SyS_sendto+0x40/0x50 net/socket.c:1718
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x451e59
RSP: 002b:00007f216f57ec08 EFLAGS: 00000216 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 0000000000451e59
RDX: 0000000000000052 RSI: 00000000209d9fae RDI: 0000000000000005
RBP: 0000000000000082 R08: 000000002057d000 R09: 0000000000000010
R10: 0000000000008000 R11: 0000000000000216 R12: 00000000004b7d9c
R13: 00000000ffffffff R14: 00000000209d9000 R15: 0000000000001000

Allocated by task 24916:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551
 kmem_cache_alloc_trace+0x136/0x750 mm/slab.c:3627
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:666 [inline]
 fanout_add+0xa50/0x1190 net/packet/af_packet.c:1733
 packet_setsockopt+0xfdc/0x1e80 net/packet/af_packet.c:3795
 SYSC_setsockopt net/socket.c:1852 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1831
 entry_SYSCALL_64_fastpath+0x1f/0xbe

Freed by task 24916:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xca/0x250 mm/slab.c:3820
 packet_release+0xa8f/0xd70 net/packet/af_packet.c:3033
 sock_release+0x8d/0x1e0 net/socket.c:597
 sock_close+0x16/0x20 net/socket.c:1126
 __fput+0x333/0x7f0 fs/file_table.c:210
 ____fput+0x15/0x20 fs/file_table.c:246
 task_work_run+0x199/0x270 kernel/task_work.c:112
 exit_task_work include/linux/task_work.h:21 [inline]
 do_exit+0xa52/0x1b40 kernel/exit.c:865
 do_group_exit+0x149/0x400 kernel/exit.c:968
 get_signal+0x7e8/0x17e0 kernel/signal.c:2334
 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:808
 exit_to_usermode_loop+0x224/0x300 arch/x86/entry/common.c:158
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath+0x42f/0x500 arch/x86/entry/common.c:266
 entry_SYSCALL_64_fastpath+0xbc/0xbe

The buggy address belongs to the object at ffff8801c9874280
 which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2176 bytes inside of
 4096-byte region [ffff8801c9874280, ffff8801c9875280)
The buggy address belongs to the page:
page:ffffea0007261d00 count:1 mapcount:0 mapping:ffff8801c9874280 index:0x0 compound_mapcount: 0
flags: 0x200000000008100(slab|head)
raw: 0200000000008100 ffff8801c9874280 0000000000000000 0000000100000001
raw: ffffea0007272920 ffffea00072d81a0 ffff8801dac00dc0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c9874a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801c9874a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801c9874b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8801c9874b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801c9874c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================