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: 30597 Comm: syz-executor.2 Not tainted 4.14.145+ #0
task: 000000004a7fb4b3 task.stack: 0000000087eeaca2
RIP: 0010:tcp_sendmsg_locked+0x509/0x2f50 net/ipv4/tcp.c:1281
RSP: 0018:ffff88819ada7820 EFLAGS: 00010206
RAX: 0000000000000011 RBX: ffff8881a93d0500 RCX: 0000000000000109
RDX: ffffffff8252ea80 RSI: ffffc900000fc000 RDI: 0000000000000088
RBP: ffff88819eb6b492 R08: 0000000000000001 R09: ffffed1033d6d6d8
R10: ffffed1033d6d6d7 R11: 0000000000000000 R12: ffff88819ada7d38
R13: 0000000000000000 R14: ffff88819eb6b480 R15: dffffc0000000000
FS:  00007f0cd32bc700(0000) GS:ffff8881d7700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000960004 CR3: 00000001a0a9c002 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+0x368/0x890 net/socket.c:2062
 __sys_sendmmsg+0x13c/0x360 net/socket.c:2152
 SYSC_sendmmsg net/socket.c:2183 [inline]
 SyS_sendmmsg+0x2f/0x50 net/socket.c:2178
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459a09
RSP: 002b:00007f0cd32bbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459a09
RDX: 0000000000000001 RSI: 0000000020000180 RDI: 0000000000000005
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000004008000 R11: 0000000000000246 R12: 00007f0cd32bc6d4
R13: 00000000004c71df R14: 00000000004dc9f8 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: ffff88819ada7820
---[ end trace 9c3a3e6109b3b145 ]---