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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 ffff8880526fcae8 by task syz-executor.3/15907

CPU: 1 PID: 15907 Comm: syz-executor.3 Not tainted 4.14.210-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+0x1b2/0x283 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x194 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+0x254/0xa1d 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:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:__rcu_read_unlock+0xc1/0x160 kernel/rcu/update.c:259
RSP: 0018:ffff88805298f770 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff888052456580 RCX: 1ffffffff1197fad
RDX: 1ffff1100a48ad20 RSI: ffffffff87ccd020 RDI: ffff888052456904
RBP: ffff888052456900 R08: 0000000000000000 R09: 0000000000020012
R10: ffff888052456e30 R11: ffff888052456580 R12: ffffea000236ec40
R13: dead000000000100 R14: 00007f6fd3e9c000 R15: 0000000000000000
 rcu_read_unlock include/linux/rcupdate.h:684 [inline]
 __unlock_page_memcg+0x54/0x100 mm/memcontrol.c:1716
 page_remove_rmap+0x96/0xe0 mm/rmap.c:1296
 zap_pte_range mm/memory.c:1354 [inline]
 zap_pmd_range mm/memory.c:1456 [inline]
 zap_pud_range mm/memory.c:1485 [inline]
 zap_p4d_range mm/memory.c:1506 [inline]
 unmap_page_range+0xf3f/0x1ce0 mm/memory.c:1527
 unmap_single_vma+0x147/0x2b0 mm/memory.c:1572
 unmap_vmas+0x9d/0x160 mm/memory.c:1602
 exit_mmap+0x270/0x4d0 mm/mmap.c:3058
 __mmput kernel/fork.c:930 [inline]
 mmput kernel/fork.c:951 [inline]
 mmput+0xfa/0x420 kernel/fork.c:946
 exit_mm kernel/exit.c:548 [inline]
 do_exit+0x984/0x2850 kernel/exit.c:855
 do_group_exit+0x100/0x2e0 kernel/exit.c:965
 get_signal+0x38d/0x1ca0 kernel/signal.c:2423
 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160
 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
RIP: 0033:0x45e0f9
RSP: 002b:00007f6fd31c4cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 000000000119c0d8 RCX: 000000000045e0f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000119c0d8
RBP: 000000000119c0d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc
R13: 00007fff7d540e1f R14: 00007f6fd31c59c0 R15: 000000000119c0dc

Allocated by task 15910:
 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 15839:
 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 ffff8880526fc300
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 2024 bytes inside of
 2048-byte region [ffff8880526fc300, ffff8880526fcb00)
The buggy address belongs to the page:
page:ffffea000149bf00 count:1 mapcount:0 mapping:ffff8880526fc300 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff8880526fc300 0000000000000000 0000000100000003
raw: ffffea00014deb20 ffffea00025dcf20 ffff88813fe80c40 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880526fc980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880526fca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880526fca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff8880526fcb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880526fcb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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