TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
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
CPU: 0 PID: 11719 Comm: syz-executor6 Not tainted 4.18.0-rc7-next-20180803+ #31
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:smc_ioctl+0xc25/0x1250 net/smc/af_smc.c:1763
Code: 48 c1 e9 03 80 3c 11 00 0f 85 e9 04 00 00 4c 8b bb a0 04 00 00 48 ba 00 00 00 00 00 fc ff df 49 8d 7f 20 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 8a 04 00 00 49 8d 7d 02 41
RSP: 0018:ffff880190f975c8 EFLAGS: 00010202
RAX: ffff880190f97648 RBX: ffff8801ca7f20c0 RCX: 0000000000000004
RDX: dffffc0000000000 RSI: 1ffff100321f2ec9 RDI: 0000000000000020
RBP: ffff880190f979b0 R08: ffffed00321f2eca R09: ffffed00321f2ec9
R10: ffffed00321f2ec9 R11: ffff880190f9764f R12: 1ffff100321f2ebd
R13: ffff880190f97608 R14: 0000000020000000 R15: 0000000000000000
FS:  00007fac0f17d700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32f22000 CR3: 00000001ca983000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sock_do_ioctl+0xe4/0x3e0 net/socket.c:950
 sock_ioctl+0x30d/0x680 net/socket.c:1074
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x456b29
Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fac0f17cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fac0f17d6d4 RCX: 0000000000456b29
RDX: 0000000020000000 RSI: 0000000000008905 RDI: 0000000000000014
RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d1358 R14: 00000000004c6db6 R15: 0000000000000001
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace a79fb16e996f0525 ]---
RIP: 0010:smc_ioctl+0xc25/0x1250 net/smc/af_smc.c:1763
Code: 48 c1 e9 03 80 3c 11 00 0f 85 e9 04 00 00 4c 8b bb a0 04 00 00 48 ba 00 00 00 00 00 fc ff df 49 8d 7f 20 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 8a 04 00 00 49 8d 7d 02 41
RSP: 0018:ffff880190f975c8 EFLAGS: 00010202
RAX: ffff880190f97648 RBX: ffff8801ca7f20c0 RCX: 0000000000000004
RDX: dffffc0000000000 RSI: 1ffff100321f2ec9 RDI: 0000000000000020
RBP: ffff880190f979b0 R08: ffffed00321f2eca R09: ffffed00321f2ec9
R10: ffffed00321f2ec9 R11: ffff880190f9764f R12: 1ffff100321f2ebd
R13: ffff880190f97608 R14: 0000000020000000 R15: 0000000000000000
FS:  00007fac0f17d700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32f22000 CR3: 00000001ca983000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400