netlink: 'syz-executor0': attribute type 21 has an invalid length.
device erspan0 entered promiscuous mode
device erspan0 left promiscuous mode
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 28491 Comm: syz-executor3 Not tainted 4.17.0-rc2+ #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:smc_setsockopt+0x8b/0x120 net/smc/af_smc.c:1287
RSP: 0018:ffff8801b0b4fcc8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900068dd000
RDX: 0000000000000005 RSI: ffffffff873e71a6 RDI: 0000000000000028
RBP: ffff8801b0b4fcf8 R08: 0000000000000010 R09: ffff8801b0b4f770
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801b0b4fd40
R13: 0000000000000114 R14: 0000000000000001 R15: 0000000020000080
FS:  00007f348709c700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bc22000 CR3: 00000001ad513000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903
 __do_sys_setsockopt net/socket.c:1914 [inline]
 __se_sys_setsockopt net/socket.c:1911 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455979
RSP: 002b:00007f348709bc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f348709c6d4 RCX: 0000000000455979
RDX: 0000000000000001 RSI: 0000000000000114 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000531 R14: 00000000006fad38 R15: 0000000000000000
Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 93 00 00 00 48 8b 9b 50 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 28 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 62 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 28 49 
RIP: smc_setsockopt+0x8b/0x120 net/smc/af_smc.c:1287 RSP: ffff8801b0b4fcc8
---[ end trace 1db62778c4e981d4 ]---