==================================================================
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:4406
Read of size 2 at addr ffff8801cf359680 by task syzkaller107126/2995

CPU: 1 PID: 2995 Comm: syzkaller107126 Not tainted 4.13.0-mm1+ #7
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:4406
 __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4461
 netif_receive_skb_internal+0x10b/0x670 net/core/dev.c:4534
 napi_skb_finish net/core/dev.c:4895 [inline]
 napi_gro_receive+0x3d0/0x500 net/core/dev.c:4926
 receive_buf+0xcc5/0x51f0 drivers/net/virtio_net.c:841
 virtnet_receive drivers/net/virtio_net.c:1087 [inline]
 virtnet_poll+0x304/0xad0 drivers/net/virtio_net.c:1168
 napi_poll net/core/dev.c:5537 [inline]
 net_rx_action+0x792/0x1910 net/core/dev.c:5603
 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 do_IRQ+0xf6/0x190 arch/x86/kernel/irq.c:253
 common_interrupt+0x9d/0x9d arch/x86/entry/entry_64.S:598
 </IRQ>
RIP: 0010:unwind_get_return_address+0x7a/0xa0 arch/x86/kernel/unwind_frame.c:18
RSP: 0018:ffff8801ce00eca0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff2e
RAX: dffffc0000000000 RBX: ffff8801ce00ecc0 RCX: 1ffff10039c01d00
RDX: 1ffff10039c01da1 RSI: ffff8801ce00fdd8 RDI: ffffffff813f45b7
RBP: ffff8801ce00ecb0 R08: ffff8801ce00ed00 R09: ffff8801ce00ecf8
R10: ffff8801ce00ec70 R11: 1ffff10039d56ecb R12: ffff8801ce00ed08
R13: 0000000000000000 R14: ffff8801ceab61c0 R15: ffff8801dac10940
 __save_stack_trace+0x7e/0xd0 arch/x86/kernel/stacktrace.c:45
 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
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3561
 anon_vma_alloc mm/rmap.c:81 [inline]
 anon_vma_fork+0x16f/0x870 mm/rmap.c:340
 dup_mmap kernel/fork.c:666 [inline]
 dup_mm kernel/fork.c:1179 [inline]
 copy_mm+0xb4d/0x1310 kernel/fork.c:1233
 copy_process.part.36+0x1eae/0x4af0 kernel/fork.c:1735
 copy_process kernel/fork.c:1548 [inline]
 _do_fork+0x1ef/0xfe0 kernel/fork.c:2027