kasan: GPF could be caused by NULL-ptr deref or user memory access
kauditd_printk_skb: 1 callbacks suppressed
audit: type=1800 audit(1564322249.219:270): pid=19141 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="file0" dev="sda1" ino=17573 res=0
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 19138 Comm: syz-executor.0 Not tainted 4.14.134 #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a8864000 task.stack: ffff88805cc00000
audit: type=1804 audit(1564322249.238:271): pid=19141 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir246852301/syzkaller.9pnLOQ/513/file0" dev="sda1" ino=17573 res=1
RIP: 0010:rxrpc_connect_call+0xc9/0x41a0 net/rxrpc/conn_client.c:684
RSP: 0018:ffff88805cc07738 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90005e35000
RDX: 0000000000000003 RSI: ffffffff8593c089 RDI: 0000000000000018
RBP: ffff88805cc07880 R08: 0000000000000001 R09: ffff8880a88648a0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805d78fc00
R13: ffff88805fde03e0 R14: ffff88805fde03d0 R15: ffff88805cc07998
FS:  00007fc5a70d9700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdde29e4db8 CR3: 0000000066a25000 CR4: 00000000001406e0
Call Trace:
 rxrpc_new_client_call+0x8f7/0x1420 net/rxrpc/call_object.c:276
 rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:525 [inline]
 rxrpc_do_sendmsg+0x91a/0x1103 net/rxrpc/sendmsg.c:577
 rxrpc_sendmsg+0x48a/0x650 net/rxrpc/af_rxrpc.c:543
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 ___sys_sendmsg+0x349/0x840 net/socket.c:2062
 __sys_sendmmsg+0x152/0x3a0 net/socket.c:2152
 SYSC_sendmmsg net/socket.c:2183 [inline]
 SyS_sendmmsg+0x35/0x60 net/socket.c:2178
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459829
RSP: 002b:00007fc5a70d8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459829
RDX: 0000000000000001 RSI: 0000000020005c00 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc5a70d96d4
R13: 00000000004c6fe8 R14: 00000000004dc518 R15: 00000000ffffffff
Code: e8 03 80 3c 18 00 0f 85 6f 39 00 00 48 8b 85 28 ff ff ff 48 8b 18 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 8a 39 00 00 48 8b 5b 18 48 8d bb 00 02 00 00 
RIP: rxrpc_connect_call+0xc9/0x41a0 net/rxrpc/conn_client.c:684 RSP: ffff88805cc07738
kobject: 'loop2' (ffff8880a495eee0): kobject_uevent_env
kobject: 'loop2' (ffff8880a495eee0): fill_kobj_path: path = '/devices/virtual/block/loop2'
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
---[ end trace 991ae402669d6a43 ]---