kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN NOPTI
Modules linked in:
CPU: 1 PID: 31178 Comm: syz-executor.2 Not tainted 4.14.145+ #0
task: 00000000488719b5 task.stack: 00000000953f0b7a
RIP: 0010:tcp_sendmsg_locked+0x509/0x2f50 net/ipv4/tcp.c:1281
RSP: 0018:ffff8881a9ba7930 EFLAGS: 00010206
RAX: 0000000000000011 RBX: ffff88818ed3a280 RCX: 0000000000000120
RDX: ffffffff8252ea80 RSI: ffffc9000298b000 RDI: 0000000000000088
RBP: ffff8881c585a112 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff6305b9d R11: 0000000000000000 R12: ffff8881a9ba7e18
R13: 0000000000000000 R14: ffff8881c585a100 R15: dffffc0000000000
FS:  00007f30ab013700(0000) GS:ffff8881d7500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000738008 CR3: 0000000199114002 CR4: 00000000001606a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
 inet_sendmsg+0x15b/0x520 net/ipv4/af_inet.c:760
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb7/0x100 net/socket.c:656
 ___sys_sendmsg+0x752/0x890 net/socket.c:2062
 __sys_sendmsg+0xb6/0x150 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459a09
RSP: 002b:00007f30ab012c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a09
RDX: 000000000004c080 RSI: 0000000020000240 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f30ab0136d4
R13: 00000000004c77fd R14: 00000000004dd160 R15: 00000000ffffffff
Code: ee 2b de fe 48 85 db 0f 84 12 08 00 00 e8 e0 2b de fe 8b 84 24 08 01 00 00 49 8d bd 88 00 00 00 89 44 24 08 48 89 f8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 74 06 0f 8e 07 24 00 00 41 f6 85 88 00 00 
RIP: tcp_sendmsg_locked+0x509/0x2f50 net/ipv4/tcp.c:1281 RSP: ffff8881a9ba7930
---[ end trace 11260793cb83be5e ]---