random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 60 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 63 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 67 bits of entropy available) BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor070/3843 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 1 PID: 3843 Comm: syz-executor070 Not tainted 4.4.147-ga5fc665 #80 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 81d6733e5ffab703 ffff8801d90e7808 ffffffff81e12a4d 0000000000000001 ffffffff83c153c0 ffffffff83f0d300 ffff8801d3920000 0000000000000003 ffff8801d90e7848 ffffffff81ebc2f3 ffff8800b1ff2e3c 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:4293 [] tcp_queue_rcv+0x127/0x6f0 net/ipv4/tcp_input.c:4500 [] tcp_send_rcvq+0x3a6/0x470 net/ipv4/tcp_input.c:4546 [] tcp_sendmsg+0x23ec/0x2b10 net/ipv4/tcp.c:1134 [] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:626 [inline] [] sock_sendmsg+0xcc/0x110 net/socket.c:636 [] SYSC_sendto+0x21c/0x370 net/socket.c:1666 [] ? SYSC