dev_remove_pack: ffff8801d6aa8cc0 not found
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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 ffff8801d4284f00 by task syz-executor0/3033
CPU: 1 PID: 3033 Comm: syz-executor0 Not tainted 4.14.0-rc1+ #53
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+0x792/0x5320 drivers/net/virtio_net.c:881
virtnet_receive drivers/net/virtio_net.c:1127 [inline]
virtnet_poll+0x359/0xbc0 drivers/net/virtio_net.c:1209
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_release+0x69b/0xd70 kernel/locking/lockdep.c:4024
RSP: 0018:ffff8801acc1ef00 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff1e
RAX: dffffc0000000000 RBX: 1ffff10035983de5 RCX: ffff8801ccdc6dd8
RDX: 1ffffffff0b59335 RSI: 0000000000000004 RDI: 0000000000000282
RBP: ffff8801acc1f0b0 R08: ffffffff81947210 R09: 1ffff10035983df1
R10: ffff8801ccdc6480 R11: 0000000000000003 R12: ffff8801acc1ef88
R13: ffff8801ccdc6480 R14: e7c09c8417dfebff R15: 0000000000000003
up_write+0x6b/0x120 kernel/locking/rwsem.c:114
i_mmap_unlock_write include/linux/fs.h:472 [inline]
dup_mmap kernel/fork.c:686 [inline]
dup_mm kernel/fork.c:1179 [inline]
copy_mm+0xc48/0x1310 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:2137 [inline]
SyS_clone+0x37/0x50 kernel/fork.c:2131
do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x45085a
RSP: 002b:0000000000a6f9b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000a6f9b0 RCX: 000000000045085a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000a6f9f0 R08: 0000000000000001 R09: 00000000028cb940
R10: 00000000028cbc10 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000016
Allocated by task 335:
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 361:
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:244
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
get_signal+0x7e8/0x17e0 kernel/signal.c:2334
do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:808
exit_to_usermode_loop+0x224/0x300 arch/x86/entry/common.c:158
prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
syscall_return_slowpath+0x42f/0x500 arch/x86/entry/common.c:266
entry_SYSCALL_64_fastpath+0xbc/0xbe
The buggy address belongs to the object at ffff8801d4284680
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2176 bytes inside of
4096-byte region [ffff8801d4284680, ffff8801d4285680)
The buggy address belongs to the page:
page:ffffea000750a100 count:1 mapcount:0 mapping:ffff8801d4284680 index:0x0 compound_mapcount: 0
flags: 0x200000000008100(slab|head)
raw: 0200000000008100 ffff8801d4284680 0000000000000000 0000000100000001
raw: ffffea000743fa20 ffffea0007185720 ffff8801dac00dc0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8801d4284e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801d4284e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801d4284f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8801d4284f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801d4285000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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