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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 ffff880050f76bc0 by task syz-executor2/3442
CPU: 0 PID: 3442 Comm: syz-executor2 Not tainted 4.14.0-rc1-next-20170919+ #7
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 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
e1000_receive_skb drivers/net/ethernet/intel/e1000/e1000_main.c:4018 [inline]
e1000_clean_rx_irq+0x58d/0x1330 drivers/net/ethernet/intel/e1000/e1000_main.c:4474
e1000_clean+0xb39/0x2610 drivers/net/ethernet/intel/e1000/e1000_main.c:3819
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:577
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:777 [inline]
RIP: 0010:lock_acquire+0x256/0x580 kernel/locking/lockdep.c:4005
RSP: 0018:ffff8800528becf8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffffc5
RAX: dffffc0000000000 RBX: ffff880069f343c0 RCX: 0000000000000000
RDX: 1ffffffff0b59345 RSI: 00000000fb6f73dc RDI: 0000000000000282
RBP: ffff8800528bedf0 R08: 0000000000000000 R09: 0000000000000001
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=4 sclass=netlink_route_socket pig=3465 comm=syz-executor4
R10: 0000000000000000 R11: ffffffff87063ca0 R12: 1ffff1000a517da5
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:244 [inline]
rcu_read_lock include/linux/rcupdate.h:630 [inline]
__is_insn_slot_addr+0xb4/0x330 kernel/kprobes.c:293
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=4 sclass=netlink_route_socket pig=3465 comm=syz-executor4
is_kprobe_optinsn_slot include/linux/kprobes.h:344 [inline]
__kernel_text_address+0x8f/0xe0 kernel/extable.c:111
unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:18
__save_stack_trace+0x7e/0xd0 arch/x86/kernel/stacktrace.c:45
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
kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
slab_post_alloc_hook mm/slab.h:444 [inline]
slab_alloc_node mm/slab.c:3340 [inline]
kmem_cache_alloc_node_trace+0x139/0x760 mm/slab.c:3668
kmalloc_node include/linux/slab.h:531 [inline]
alloc_vmap_area+0x11c/0x8c0 mm/vmalloc.c:419
__get_vm_area_node+0xe8/0x340 mm/vmalloc.c:1409
__vmalloc_node_range+0xa3/0x730 mm/vmalloc.c:1760
__vmalloc_node mm/vmalloc.c:1810 [inline]
__vmalloc_node_flags mm/vmalloc.c:1824 [inline]
vmalloc+0x45/0x50 mm/vmalloc.c:1846
bpf_prog_calc_tag+0xbf/0x6f0 kernel/bpf/core.c:165
replace_map_fd_with_map_ptr kernel/bpf/verifier.c:3873 [inline]
bpf_check+0x39d/0x1630 kernel/bpf/verifier.c:4311
bpf_prog_load+0x7d6/0x1690 kernel/bpf/syscall.c:1039
SYSC_bpf kernel/bpf/syscall.c:1485 [inline]
SyS_bpf+0x1359/0x46a0 kernel/bpf/syscall.c:1451
entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x4474f9
RSP: 002b:00007f0c5e8cfc08 EFLAGS: 00000296 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004474f9
RDX: 0000000000000030 RSI: 0000000020008000 RDI: 0000000000000005
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0c5e8d09c0 R15: 00007f0c5e8d0700
Allocated by task 3416:
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 3416:
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/0x510 arch/x86/entry/common.c:266
entry_SYSCALL_64_fastpath+0xbc/0xbe
The buggy address belongs to the object at ffff880050f76340
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2176 bytes inside of
4096-byte region [ffff880050f76340, ffff880050f77340)
The buggy address belongs to the page:
page:ffffea000143dd80 count:1 mapcount:0 mapping:ffff880050f76340 index:0x0 compound_mapcount: 0
flags: 0x500000000008100(slab|head)
raw: 0500000000008100 ffff880050f76340 0000000000000000 0000000100000001
raw: ffffea000143a220 ffffea00014a1ca0 ffff88003e800dc0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff880050f76a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff880050f76b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff880050f76b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff880050f76c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff880050f76c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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