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: 17551 Comm: syz-executor.1 Not tainted 4.14.145+ #0
task: 000000005fc9ff01 task.stack: 00000000260aa665
RIP: 0010:tcp_sendmsg_locked+0x509/0x2f50 net/ipv4/tcp.c:1281
RSP: 0018:ffff88819309f998 EFLAGS: 00010206
RAX: 0000000000000011 RBX: ffff888193021400 RCX: 0000000000000114
RDX: ffffffff8252ea80 RSI: ffffc90004772000 RDI: 0000000000000088
RBP: ffff8881a5eecd12 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff7a05b9d R11: 0000000000000000 R12: ffff88819309fc00
R13: 0000000000000000 R14: ffff8881a5eecd00 R15: dffffc0000000000
FS:  00007f4436617700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000019d67e006 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
 sock_write_iter+0x20f/0x360 net/socket.c:925
 call_write_iter include/linux/fs.h:1788 [inline]
 new_sync_write fs/read_write.c:471 [inline]
 __vfs_write+0x401/0x5a0 fs/read_write.c:484
 vfs_write+0x17f/0x4d0 fs/read_write.c:546
 SYSC_write fs/read_write.c:594 [inline]
 SyS_write+0x102/0x250 fs/read_write.c:586
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459a09
RSP: 002b:00007f4436616c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a09
RDX: 00000000fffffffe RSI: 0000000020000380 RDI: 000000000000000a
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f44366176d4
R13: 00000000004c5f88 R14: 00000000004e0610 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: ffff88819309f998
---[ end trace 087b1cfd45731f14 ]---