BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor557/4015
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 4015 Comm: syz-executor557 Not tainted 4.4.160+ #45
 0000000000000000 43c5845860f4f647 ffff8800b39bf6e0 ffffffff81a995dd
 0000000000000001 ffffffff82929980 ffffffff82a7c660 ffff8801d00317c0
 0000000000000001 ffff8800b39bf720 ffffffff81b3509a ffff8800b39bf730
Call Trace:
 [<ffffffff81a995dd>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81a995dd>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81b3509a>] check_preemption_disabled.cold.0+0x7f/0x8b lib/smp_processor_id.c:46
 [<ffffffff81af77bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff823fd2ea>] tcp_try_coalesce+0x22a/0x4c0 net/ipv4/tcp_input.c:4293
 [<ffffffff823fd6a7>] tcp_queue_rcv+0x127/0x6f0 net/ipv4/tcp_input.c:4500
 [<ffffffff82412126>] tcp_send_rcvq+0x3a6/0x470 net/ipv4/tcp_input.c:4546
 [<ffffffff823ea32c>] tcp_sendmsg+0x237c/0x2b30 net/ipv4/tcp.c:1134
 [<ffffffff82496833>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff821c332b>] sock_sendmsg_nosec net/socket.c:638 [inline]
 [<ffffffff821c332b>] sock_sendmsg+0xbb/0x110 net/socket.c:648
 [<ffffffff821c35a3>] sock_write_iter+0x223/0x3b0 net/socket.c:847
 [<ffffffff81490fc4>] new_sync_write fs/read_write.c:478 [inline]
 [<ffffffff81490fc4>] __vfs_write+0x304/0x3e0 fs/read_write.c:491
 [<ffffffff81492a8e>] vfs_write+0x17e/0x4e0 fs/read_write.c:538
 [<ffffffff814950c9>] SYSC_write fs/read_write.c:585 [inline]
 [<ffffffff814950c9>] SyS_write+0xd9/0x1c0 fs/read_write.c:577
 [<ffffffff8100629e>] do_syscall_32_irqs_on arch/x86/entry/common.c:396 [inline]
 [<ffffffff8100629e>] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:463
 [<ffffffff82707890>] sysenter_flags_fixed+0xd/0x1a