random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) random: nonblocking pool is initialized BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor668/3838 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 1 PID: 3838 Comm: syz-executor668 Not tainted 4.4.129-g23eaecc #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 effbd84c17bf0852 ffff8801d956f808 ffffffff81e0dc8d 0000000000000001 ffffffff83c132c0 ffffffff83f0a4c0 ffff8801ca9a9800 0000000000000003 ffff8801d956f848 ffffffff81eb75b3 ffff8801cbb7693c Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] check_preemption_disabled.cold.0+0x7f/0x8b lib/smp_processor_id.c:46 [] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 [] tcp_try_coalesce+0x22a/0x4c0 net/ipv4/tcp_input.c:4280 [] tcp_queue_rcv+0x127/0x6f0 net/ipv4/tcp_input.c:4487 [] tcp_send_rcvq+0x3a6/0x470 net/ipv4/tcp_input.c:4533 [] tcp_sendmsg+0x231e/0x2b20 net/ipv4/tcp.c:1134 [] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:625 [inline] [] sock_sendmsg+0xcc/0x110 net/socket.c:635 [] SYSC_sendto+0x21c/0x370 net/socket.c:1665 [