device macvtap0 entered promiscuous mode
device macvtap0 left promiscuous mode
==================================================================
BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:183 [inline]
BUG: KASAN: use-after-free in dev_queue_xmit_nit+0x7b5/0x950 net/core/dev.c:1925
Read of size 8 at addr ffff8880669dcce8 by task syz-executor.2/11603

CPU: 1 PID: 11603 Comm: syz-executor.2 Not tainted 4.14.229-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+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 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]
 dev_queue_xmit_nit+0x7b5/0x950 net/core/dev.c:1925
 xmit_one net/core/dev.c:3001 [inline]
 dev_hard_start_xmit+0xaa/0x890 net/core/dev.c:3021
 sch_direct_xmit+0x251/0x500 net/sched/sch_generic.c:186
 qdisc_restart net/sched/sch_generic.c:249 [inline]
 __qdisc_run+0x25d/0xe00 net/sched/sch_generic.c:257
 qdisc_run include/net/pkt_sched.h:115 [inline]
 net_tx_action+0x469/0xa10 net/core/dev.c:4171
 __do_softirq+0x24d/0x9ff 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:638 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192
RSP: 0018:ffff88806882f8a8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e1259 RBX: 0000000000000286 RCX: 1ffff110144ff9cd
RDX: dffffc0000000000 RSI: ffff8880a27fce70 RDI: 0000000000000286
RBP: ffffffff88f7a120 R08: ffff8880ba42ac30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
R13: ffffc90005ac3002 R14: 0000000000000001 R15: 0000000000000000
 __rcu_read_unlock+0x158/0x160 kernel/rcu/update.c:260
 rcu_read_unlock include/linux/rcupdate.h:684 [inline]
 sk_filter_trim_cap+0x3d5/0x690 net/core/filter.c:106
 sk_filter include/linux/filter.h:665 [inline]
 unix_dgram_sendmsg+0x4d6/0x1080 net/unix/af_unix.c:1742
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 sock_no_sendpage+0xe2/0x110 net/core/sock.c:2595
 kernel_sendpage net/socket.c:3407 [inline]
 sock_sendpage+0xdf/0x140 net/socket.c:871
 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x326/0x7a0 fs/splice.c:626
 splice_from_pipe fs/splice.c:661 [inline]
 generic_splice_sendpage+0xc1/0x110 fs/splice.c:832
 do_splice_from fs/splice.c:851 [inline]
 do_splice fs/splice.c:1147 [inline]
 SYSC_splice fs/splice.c:1402 [inline]
 SyS_splice+0xd59/0x1380 fs/splice.c:1382
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x466459
RSP: 002b:00007f376ebd8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466459
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 000000800000ffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007fff7f4a31df R14: 00007f376ebd8300 R15: 0000000000022000

Allocated by task 11634:
 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 11630:
 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 ffff8880669dc500
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 2024 bytes inside of
 2048-byte region [ffff8880669dc500, ffff8880669dcd00)
The buggy address belongs to the page:
page:ffffea00019a7700 count:1 mapcount:0 mapping:ffff8880669dc500 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff8880669dc500 0000000000000000 0000000100000003
raw: ffffea00015d20a0 ffffea00027311a0 ffff88813fe80c40 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880669dcb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880669dcc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880669dcc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff8880669dcd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880669dcd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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