FILE: net/llc/llc_sap.c

------------[ cut here ]------------
kernel BUG at ./include/linux/skbuff.h:2389!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 2 PID: 10793 Comm: syz-executor0 Not tainted 4.10.0-rc8+ #201
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88006aeb1700 task.stack: ffff880069b08000
RIP: 0010:skb_set_owner_r include/linux/skbuff.h:2389 [inline]
RIP: 0010:__sock_queue_rcv_skb+0x8c0/0xda0 net/core/sock.c:425
RSP: 0018:ffff88006de06b58 EFLAGS: 00010206
RAX: ffff88006aeb1700 RBX: ffff8800581dc170 RCX: 0000000000000000
RDX: 0000000000000100 RSI: 1ffff1000d5fcb7b RDI: ffff88006afe5be0
RBP: ffff88006de06dc0 R08: 0000000000000002 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000000 R12: ffff88006afe5bc0
R13: ffff88006de06d98 R14: ffff8800581dc198 R15: ffff88006afe5c20
FS:  00007f06a3bd9700(0000) GS:ffff88006de00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020007000 CR3: 000000006a280000 CR4: 00000000000006e0
Call Trace:
 <IRQ>
 sock_queue_rcv_skb+0x3a/0x50 net/core/sock.c:451
PF_BRIDGE: RTM_DELNEIGH with invalid address
 llc_sap_state_process+0x3e3/0x4e0 net/llc/llc_sap.c:220
 llc_sap_rcv net/llc/llc_sap.c:294 [inline]
 llc_sap_handler+0x695/0x1320 net/llc/llc_sap.c:434
 llc_rcv+0x6da/0xed0 net/llc/llc_input.c:208
 __netif_receive_skb_core+0x1ae5/0x3400 net/core/dev.c:4190
 __netif_receive_skb+0x2a/0x170 net/core/dev.c:4228
 process_backlog+0xe5/0x6c0 net/core/dev.c:4839
 napi_poll net/core/dev.c:5202 [inline]
 net_rx_action+0xe70/0x1900 net/core/dev.c:5267
 __do_softirq+0x2fb/0xb7d kernel/softirq.c:284
 do_softirq_own_stack+0x1c/0x30 arch/x86/entry/entry_64.S:902
 </IRQ>
 do_softirq.part.17+0x1e8/0x230 kernel/softirq.c:328
 do_softirq kernel/softirq.c:176 [inline]
 __local_bh_enable_ip+0x1f2/0x200 kernel/softirq.c:181
 local_bh_enable include/linux/bottom_half.h:31 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:971 [inline]
 __dev_queue_xmit+0xd87/0x2860 net/core/dev.c:3399
 dev_queue_xmit+0x17/0x20 net/core/dev.c:3405
 llc_build_and_send_ui_pkt+0x240/0x330 net/llc/llc_output.c:74
 llc_ui_sendmsg+0x98d/0x1430 net/llc/af_llc.c:928
 sock_sendmsg_nosec net/socket.c:635 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:645
 ___sys_sendmsg+0x9d2/0xae0 net/socket.c:1985
 __sys_sendmsg+0x138/0x320 net/socket.c:2019
 SYSC_sendmsg net/socket.c:2030 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2026
 entry_SYSCALL_64_fastpath+0x1f/0xc2