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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 ffff8801c5296c00 by task syzkaller175801/4919
CPU: 0 PID: 4919 Comm: syzkaller175801 Not tainted 4.13.0+ #43
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:814 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x5e/0xba kernel/locking/spinlock.c:191
RSP: 0018:ffff8801c5397bf0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff6e
RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000000
RDX: 1ffffffff0b592fd RSI: 0000000000000001 RDI: 0000000000000282
RBP: ffff8801c5397c00 R08: ffff8801c5397638 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801ce4b7d90
R13: 0000000000000041 R14: 0000000000000001 R15: 0000000000000282
spin_unlock_irqrestore include/linux/spinlock.h:371 [inline]
__wake_up_sync_key+0x4b/0x60 kernel/sched/wait.c:148
pipe_write+0x64e/0xd70 fs/pipe.c:481
call_write_iter include/linux/fs.h:1743 [inline]
new_sync_write fs/read_write.c:457 [inline]
__vfs_write+0x68a/0x970 fs/read_write.c:470
vfs_write+0x18f/0x510 fs/read_write.c:518
SYSC_write fs/read_write.c:565 [inline]
SyS_write+0xef/0x220 fs/read_write.c:557
entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x44a769
RSP: 002b:00007ffc7831de78 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044a769
RDX: 0000000000000012 RSI: 00000000004afc68 RDI: 0000000000000001
RBP: 0000000000000082 R08: 00000000012eb940 R09: 00000000006db018
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000407990 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 4885:
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
kmem_cache_alloc_trace+0x136/0x750 mm/slab.c:3627
kmalloc include/linux/slab.h:493 [inline]
kzalloc include/linux/slab.h:666 [inline]
fanout_add+0xa50/0x1190 net/packet/af_packet.c:1733
packet_setsockopt+0xfdc/0x1e80 net/packet/af_packet.c:3795
SYSC_setsockopt net/socket.c:1852 [inline]
SyS_setsockopt+0x189/0x360 net/socket.c:1831
entry_SYSCALL_64_fastpath+0x1f/0xbe
Freed by task 4830:
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_slab_free+0x71/0xc0 mm/kasan/kasan.c:524
__cache_free mm/slab.c:3503 [inline]
kfree+0xca/0x250 mm/slab.c:3820
packet_release+0xa8f/0xd70 net/packet/af_packet.c:3033
sock_release+0x8d/0x1e0 net/socket.c:597
sock_close+0x16/0x20 net/socket.c:1126
__fput+0x333/0x7f0 fs/file_table.c:210
____fput+0x15/0x20 fs/file_table.c:246
task_work_run+0x199/0x270 kernel/task_work.c:112
exit_task_work include/linux/task_work.h:21 [inline]
do_exit+0xa52/0x1b40 kernel/exit.c:865
do_group_exit+0x149/0x400 kernel/exit.c:968
SYSC_exit_group kernel/exit.c:979 [inline]
SyS_exit_group+0x1d/0x20 kernel/exit.c:977
entry_SYSCALL_64_fastpath+0x1f/0xbe
The buggy address belongs to the object at ffff8801c5296380
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2176 bytes inside of
4096-byte region [ffff8801c5296380, ffff8801c5297380)
The buggy address belongs to the page:
page:ffffea000714a580 count:1 mapcount:0 mapping:ffff8801c5296380 index:0x0 compound_mapcount: 0
flags: 0x200000000008100(slab|head)
raw: 0200000000008100 ffff8801c5296380 0000000000000000 0000000100000001
raw: ffffea00071492a0 ffffea000714ce20 ffff8801dac00dc0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8801c5296b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801c5296b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801c5296c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8801c5296c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801c5296d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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