==================================================================
BUG: KASAN: use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] at addr ffff8801c8b9bccc
BUG: KASAN: use-after-free in do_raw_spin_lock+0x28f/0x2c0 kernel/locking/spinlock_debug.c:135 at addr ffff8801c8b9bccc
Read of size 4 by task swapper/0/0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.9.46-g9100442 #38
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db207758 ffffffff81d93129 ffff8801da002000 ffff8801c8b9bb80
 ffff8801c8b9c380 ffffed0039173799 ffff8801c8b9bccc ffff8801db207780
 ffffffff8153ccac ffffed0039173799 ffff8801da002000 0000000000000000
Call Trace:
 <IRQ> [   42.149094]  [<ffffffff81d93129>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [   42.149094]  [<ffffffff81d93129>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153ccac>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153cf6c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153cf6c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153cf6c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153d2d9>] kasan_report mm/kasan/report.c:329 [inline]
 [<ffffffff8153d2d9>] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329
 [<ffffffff81248d3f>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81248d3f>] do_raw_spin_lock+0x28f/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff838aa2e2>] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:138 [inline]
 [<ffffffff838aa2e2>] _raw_spin_lock_bh+0x42/0x50 kernel/locking/spinlock.c:175
 [<ffffffff83545f15>] spin_lock_bh include/linux/spinlock.h:307 [inline]
 [<ffffffff83545f15>] packet_rcv_has_room+0x25/0xb0 net/packet/af_packet.c:1300
 [<ffffffff8354620f>] fanout_demux_rollover+0x26f/0x4d0 net/packet/af_packet.c:1380
 [<ffffffff8354d18e>] packet_rcv_fanout+0x4ce/0x620 net/packet/af_packet.c:1482
 [<ffffffff82f34397>] deliver_skb net/core/dev.c:1834 [inline]
 [<ffffffff82f34397>] deliver_ptype_list_skb net/core/dev.c:1849 [inline]
 [<ffffffff82f34397>] __netif_receive_skb_core+0x887/0x29e0 net/core/dev.c:4220
 [<ffffffff82f3654b>] __netif_receive_skb+0x5b/0x1c0 net/core/dev.c:4275
 [<ffffffff82f3ac6f>] netif_receive_skb_internal+0xff/0x390 net/core/dev.c:4303
 [<ffffffff82f3eccb>] napi_skb_finish net/core/dev.c:4661 [inline]
 [<ffffffff82f3eccb>] napi_gro_receive+0x1fb/0x400 net/core/dev.c:4691
 [<ffffffff8271d4fc>] receive_buf drivers/net/virtio_net.c:508 [inline]
 [<ffffffff8271d4fc>] virtnet_receive+0xe1c/0x1cf0 drivers/net/virtio_net.c:723
 [<ffffffff8271e3f6>] virtnet_poll+0x26/0x140 drivers/net/virtio_net.c:741
 [<ffffffff82f3c976>] napi_poll net/core/dev.c:5197 [inline]
 [<ffffffff82f3c976>] net_rx_action+0x396/0xe00 net/core/dev.c:5262
 [<ffffffff838adc1d>] __do_softirq+0x22d/0x964 kernel/softirq.c:284
 [<ffffffff81147985>] invoke_softirq kernel/softirq.c:364 [inline]
 [<ffffffff81147985>] irq_exit+0x165/0x190 kernel/softirq.c:405
 [<ffffffff838ad397>] exiting_irq arch/x86/include/asm/apic.h:659 [inline]
 [<ffffffff838ad397>] do_IRQ+0x107/0x1b0 arch/x86/kernel/irq.c:251
 [<ffffffff838ab74c>] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520
 <EOI> [   42.390694]  [<ffffffff838a99f6>] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53
 [<ffffffff838a9025>] arch_safe_halt arch/x86/include/asm/paravirt.h:103 [inline]
 [<ffffffff838a9025>] default_idle+0x55/0x360 arch/x86/kernel/process.c:295
 [<ffffffff8106c35a>] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:286
 [<ffffffff838a9e46>] default_idle_call+0x36/0x60 kernel/sched/idle.c:97
 [<ffffffff8122604c>] cpuidle_idle_call kernel/sched/idle.c:155 [inline]
 [<ffffffff8122604c>] cpu_idle_loop kernel/sched/idle.c:248 [inline]
 [<ffffffff8122604c>] cpu_startup_entry+0x30c/0x3d0 kernel/sched/idle.c:303
 [<ffffffff838961f4>] rest_init+0x184/0x190 init/main.c:408
 [<ffffffff84a658a7>] start_kernel+0x679/0x6ae init/main.c:662
 [<ffffffff84a6429d>] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:196
 [<ffffffff84a643df>] x86_64_start_kernel+0x140/0x163 arch/x86/kernel/head64.c:177
Object at ffff8801c8b9bb80, in cache kmalloc-2048 size: 2048
Allocated:
PID = 3627
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 __kmalloc+0x11d/0x310 mm/slub.c:3741
 kmalloc include/linux/slab.h:495 [inline]
 sk_prot_alloc+0x101/0x2a0 net/core/sock.c:1338
 sk_alloc+0x3a/0x3a0 net/core/sock.c:1394
 packet_create+0xf0/0x8e0 net/packet/af_packet.c:3205
 __sock_create+0x3ab/0x640 net/socket.c:1182
 sock_create net/socket.c:1222 [inline]
 SYSC_socket net/socket.c:1252 [inline]
 SyS_socket+0xf0/0x1b0 net/socket.c:1232
 entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 3627
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571
 slab_free_hook mm/slub.c:1355 [inline]
 slab_free_freelist_hook mm/slub.c:1377 [inline]
 slab_free mm/slub.c:2958 [inline]
 kfree+0xf0/0x2f0 mm/slub.c:3878
 sk_prot_free net/core/sock.c:1377 [inline]
 __sk_destruct+0x47f/0x570 net/core/sock.c:1455
 sk_destruct+0x47/0x80 net/core/sock.c:1463
 __sk_free+0x57/0x230 net/core/sock.c:1471
 sk_free+0x23/0x30 net/core/sock.c:1482
 sock_put include/net/sock.h:1592 [inline]
 packet_release+0x732/0xa20 net/packet/af_packet.c:3041
 sock_release+0x8d/0x1e0 net/socket.c:599
 sock_close+0x16/0x20 net/socket.c:1046
 __fput+0x28c/0x6e0 fs/file_table.c:208
 ____fput+0x15/0x20 fs/file_table.c:244
 task_work_run+0x115/0x190 kernel/task_work.c:116
 exit_task_work include/linux/task_work.h:21 [inline]
 do_exit+0x82e/0x2a50 kernel/exit.c:833
 do_group_exit+0x108/0x320 kernel/exit.c:937
 get_signal+0x55c/0x1600 kernel/signal.c:2315
 do_signal+0x87/0x1960 arch/x86/kernel/signal.c:807
 exit_to_usermode_loop+0xe5/0x130 arch/x86/entry/common.c:156
 prepare_exit_to_usermode arch/x86/entry/common.c:190 [inline]
 syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259
 entry_SYSCALL_64_fastpath+0xc4/0xc6
Memory state around the buggy address:
 ffff8801c8b9bb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801c8b9bc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801c8b9bc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff8801c8b9bd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801c8b9bd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:84 [inline] at addr ffff8801c8b9bcd8
BUG: KASAN: use-after-free in do_raw_spin_lock+0x2b3/0x2c0 kernel/locking/spinlock_debug.c:135 at addr ffff8801c8b9bcd8
Read of size 8 by task swapper/0/0
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G    B           4.9.46-g9100442 #38
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db207758 ffffffff81d93129 ffff8801da002000 ffff8801c8b9bb80
 ffff8801c8b9c380 ffffed003917379b ffff8801c8b9bcd8 ffff8801db207780
 ffffffff8153ccac ffffed003917379b ffff8801da002000 0000000000000000
Call Trace:
 <IRQ> [   42.720642]  [<ffffffff81d93129>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [   42.720642]  [<ffffffff81d93129>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153ccac>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153cf6c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153cf6c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153cf6c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153d309>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153d309>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff81248d63>] debug_spin_lock_before kernel/locking/spinlock_debug.c:84 [inline]
 [<ffffffff81248d63>] do_raw_spin_lock+0x2b3/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff838aa2e2>] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:138 [inline]
 [<ffffffff838aa2e2>] _raw_spin_lock_bh+0x42/0x50 kernel/locking/spinlock.c:175
 [<ffffffff83545f15>] spin_lock_bh include/linux/spinlock.h:307 [inline]
 [<ffffffff83545f15>] packet_rcv_has_room+0x25/0xb0 net/packet/af_packet.c:1300
 [<ffffffff8354620f>] fanout_demux_rollover+0x26f/0x4d0 net/packet/af_packet.c:1380
 [<ffffffff8354d18e>] packet_rcv_fanout+0x4ce/0x620 net/packet/af_packet.c:1482
 [<ffffffff82f34397>] deliver_skb net/core/dev.c:1834 [inline]
 [<ffffffff82f34397>] deliver_ptype_list_skb net/core/dev.c:1849 [inline]
 [<ffffffff82f34397>] __netif_receive_skb_core+0x887/0x29e0 net/core/dev.c:4220
 [<ffffffff82f3654b>] __netif_receive_skb+0x5b/0x1c0 net/core/dev.c:4275
 [<ffffffff82f3ac6f>] netif_receive_skb_internal+0xff/0x390 net/core/dev.c:4303
 [<ffffffff82f3eccb>] napi_skb_finish net/core/dev.c:4661 [inline]
 [<ffffffff82f3eccb>] napi_gro_receive+0x1fb/0x400 net/core/dev.c:4691
 [<ffffffff8271d4fc>] receive_buf drivers/net/virtio_net.c:508 [inline]
 [<ffffffff8271d4fc>] virtnet_receive+0xe1c/0x1cf0 drivers/net/virtio_net.c:723
 [<ffffffff8271e3f6>] virtnet_poll+0x26/0x140 drivers/net/virtio_net.c:741
 [<ffffffff82f3c976>] napi_poll net/core/dev.c:5197 [inline]
 [<ffffffff82f3c976>] net_rx_action+0x396/0xe00 net/core/dev.c:5262
 [<ffffffff838adc1d>] __do_softirq+0x22d/0x964 kernel/softirq.c:284
 [<ffffffff81147985>] invoke_softirq kernel/softirq.c:364 [inline]
 [<ffffffff81147985>] irq_exit+0x165/0x190 kernel/softirq.c:405
 [<ffffffff838ad397>] exiting_irq arch/x86/include/asm/apic.h:659 [inline]
 [<ffffffff838ad397>] do_IRQ+0x107/0x1b0 arch/x86/kernel/irq.c:251
 [<ffffffff838ab74c>] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520
 <EOI> [   42.962627]  [<ffffffff838a99f6>] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53
 [<ffffffff838a9025>] arch_safe_halt arch/x86/include/asm/paravirt.h:103 [inline]
 [<ffffffff838a9025>] default_idle+0x55/0x360 arch/x86/kernel/process.c:295
 [<ffffffff8106c35a>] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:286
 [<ffffffff838a9e46>] default_idle_call+0x36/0x60 kernel/sched/idle.c:97
 [<ffffffff8122604c>] cpuidle_idle_call kernel/sched/idle.c:155 [inline]
 [<ffffffff8122604c>] cpu_idle_loop kernel/sched/idle.c:248 [inline]
 [<ffffffff8122604c>] cpu_startup_entry+0x30c/0x3d0 kernel/sched/idle.c:303
 [<ffffffff838961f4>] rest_init+0x184/0x190 init/main.c:408
 [<ffffffff84a658a7>] start_kernel+0x679/0x6ae init/main.c:662
 [<ffffffff84a6429d>] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:196
 [<ffffffff84a643df>] x86_64_start_kernel+0x140/0x163 arch/x86/kernel/head64.c:177
Object at ffff8801c8b9bb80, in cache kmalloc-2048 size: 2048
Allocated:
PID = 3627
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 __kmalloc+0x11d/0x310 mm/slub.c:3741
 kmalloc include/linux/slab.h:495 [inline]
 sk_prot_alloc+0x101/0x2a0 net/core/sock.c:1338
 sk_alloc+0x3a/0x3a0 net/core/sock.c:1394
 packet_create+0xf0/0x8e0 net/packet/af_packet.c:3205
 __sock_create+0x3ab/0x640 net/socket.c:1182
 sock_create net/socket.c:1222 [inline]
 SYSC_socket net/socket.c:1252 [inline]
 SyS_socket+0xf0/0x1b0 net/socket.c:1232