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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 ffff88006cf4ea80 by task ksoftirqd/0/8

CPU: 0 PID: 8 Comm: ksoftirqd/0 Not tainted 4.13.0-rc7-next-20170901+ #13
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 __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
 netif_receive_skb_internal+0x10b/0x5e0 net/core/dev.c:4527
 napi_skb_finish net/core/dev.c:4888 [inline]
 napi_gro_receive+0x3d0/0x500 net/core/dev.c:4919
 e1000_receive_skb drivers/net/ethernet/intel/e1000/e1000_main.c:4018 [inline]
 e1000_clean_rx_irq+0x58d/0x1330 drivers/net/ethernet/intel/e1000/e1000_main.c:4474
 e1000_clean+0xb39/0x2610 drivers/net/ethernet/intel/e1000/e1000_main.c:3819
 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
 run_ksoftirqd+0x50/0x100 kernel/softirq.c:676
 smpboot_thread_fn+0x489/0x850 kernel/smpboot.c:164
 kthread+0x39c/0x470 kernel/kthread.c:231
 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431

Allocated by task 4148:
 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 4107:
 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
 SYSC_exit_group kernel/exit.c:979 [inline]
 SyS_exit_group+0x1d/0x20 kernel/exit.c:977
 entry_SYSCALL_64_fastpath+0x1f/0xbe

The buggy address belongs to the object at ffff88006cf4e200
 which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2176 bytes inside of
 4096-byte region [ffff88006cf4e200, ffff88006cf4f200)
The buggy address belongs to the page:
page:ffffea0001b3d380 count:1 mapcount:0 mapping:ffff88006cf4e200 index:0x0 compound_mapcount: 0
flags: 0x500000000008100(slab|head)
raw: 0500000000008100 ffff88006cf4e200 0000000000000000 0000000100000001
raw: ffffea0001b3a920 ffffea0001a7d0a0 ffff88003e800dc0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88006cf4e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88006cf4ea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88006cf4ea80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88006cf4eb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88006cf4eb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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