==================================================================
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 ffff8801cd6c1100 by task syzkaller255262/2987

CPU: 0 PID: 2987 Comm: syzkaller255262 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:777 [inline]
RIP: 0010:lock_acquire+0x256/0x580 kernel/locking/lockdep.c:4005
RSP: 0018:ffff8801ce566ea8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff6e
RAX: dffffc0000000000 RBX: ffff8801cf7484c0 RCX: 0000000000000000
RDX: 1ffffffff0b592fd RSI: ffffffff813f058e RDI: 0000000000000282
RBP: ffff8801ce566fa0 R08: ffff8801ce566920 R09: ffff8801ce566918
R10: ffff8801ce566890 R11: 1ffff10039ee932b R12: 1ffff10039cacddb
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 fs_reclaim_acquire.part.85+0x24/0x30 mm/page_alloc.c:3560
 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3561
 slab_pre_alloc_hook mm/slab.h:417 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc+0x29/0x760 mm/slab.c:3559
 anon_vma_chain_alloc mm/rmap.c:128 [inline]
 anon_vma_fork+0x2e6/0x870 mm/rmap.c:343
 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
 SYSC_clone kernel/fork.c:2138 [inline]
 SyS_clone+0x37/0x50 kernel/fork.c:2132
 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287
 entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x44470a
RSP: 002b:00007ffc042a24c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc042a24c0 RCX: 000000000044470a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc042a2500 R08: 0000000000000bab R09: 0000000001496880
R10: 0000000001496b50 R11: 0000000000000246 R12: 0000000000000bab