[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   19.128182] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.
[   20.283182] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   20.601227] random: sshd: uninitialized urandom read (32 bytes read)
[   21.484433] random: sshd: uninitialized urandom read (32 bytes read)
[   21.637578] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts.
[   27.122693] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/14 02:23:58 parsed 1 programs
[   28.819144] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/14 02:24:00 executed programs: 0
[   29.992272] IPVS: ftp: loaded support on port[0] = 21
[   30.110191] WARNING: CPU: 0 PID: 4522 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0
[   30.118644] Kernel panic - not syncing: panic_on_warn set ...
[   30.118644] 
[   30.126020] CPU: 0 PID: 4522 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #48
[   30.133199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   30.142544] Call Trace:
[   30.145122]  dump_stack+0x1c9/0x2b4
[   30.148739]  ? dump_stack_print_info.cold.2+0x52/0x52
[   30.153921]  panic+0x238/0x4e7
[   30.157098]  ? add_taint.cold.5+0x16/0x16
[   30.161247]  ? __warn.cold.8+0x148/0x1ba
[   30.165294]  ? __warn.cold.8+0x117/0x1ba
[   30.169345]  ? smc_unhash_sk+0x357/0x4b0
[   30.173405]  __warn.cold.8+0x163/0x1ba
[   30.177316]  ? smc_unhash_sk+0x357/0x4b0
[   30.181383]  report_bug+0x252/0x2d0
[   30.185027]  do_error_trap+0x1fc/0x4d0
[   30.188911]  ? graph_lock+0x170/0x170
[   30.192699]  ? math_error+0x3e0/0x3e0
[   30.196490]  ? lock_acquire+0x1e4/0x540
[   30.200458]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   30.205286]  do_invalid_op+0x1b/0x20
[   30.208990]  invalid_op+0x14/0x20
[   30.212435] RIP: 0010:smc_unhash_sk+0x357/0x4b0
[   30.217085] Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 88 00 00 00 48 81 c4 c0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e9 52 1a fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 b3 2c 58 fa 
[   30.236262] RSP: 0018:ffff8801b377f9f8 EFLAGS: 00010293
[   30.241617] RAX: ffff8801b379e240 RBX: ffff8801b324b0c0 RCX: ffffffff8761b7f6
[   30.248880] RDX: 0000000000000000 RSI: ffffffff8761b8b7 RDI: 0000000000000005
[   30.256132] RBP: ffff8801b377fae0 R08: ffff8801b379e240 R09: ffffed0036649628
[   30.263384] R10: ffffed0036649628 R11: ffff8801b324b143 R12: 1ffff100366eff43
[   30.270660] R13: ffff8801b377fab8 R14: ffffffff89937340 R15: ffff8801b324b140
[   30.277931]  ? smc_unhash_sk+0x296/0x4b0
[   30.281988]  ? smc_unhash_sk+0x357/0x4b0
[   30.286049]  ? smc_unhash_sk+0x357/0x4b0
[   30.290101]  ? smc_rx_data_available+0x120/0x120
[   30.294845]  ? release_sock+0x1ec/0x2c0
[   30.298816]  ? __local_bh_enable_ip+0x161/0x230
[   30.303471]  ? __release_sock+0x3a0/0x3a0
[   30.307612]  ? smc_release+0x2c9/0x670
[   30.311488]  ? trace_hardirqs_on+0xd/0x10
[   30.315629]  ? __local_bh_enable_ip+0x161/0x230
[   30.320294]  smc_release+0x3cf/0x670
[   30.324021]  __sock_release+0xd7/0x260
[   30.327915]  ? __sock_release+0x260/0x260
[   30.332050]  sock_close+0x19/0x20
[   30.335489]  __fput+0x355/0x8b0
[   30.338754]  ? fput+0x1a0/0x1a0
[   30.342040]  ? _raw_spin_unlock_irq+0x27/0x70
[   30.346609]  ____fput+0x15/0x20
[   30.349874]  task_work_run+0x1ec/0x2a0
[   30.353747]  ? task_work_cancel+0x250/0x250
[   30.358056]  ? exit_to_usermode_loop+0x8c/0x370
[   30.362726]  exit_to_usermode_loop+0x313/0x370
[   30.367304]  ? syscall_slow_exit_work+0x500/0x500
[   30.372146]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   30.377674]  do_fast_syscall_32+0xcd5/0xfb2
[   30.381993]  ? do_int80_syscall_32+0x890/0x890
[   30.386563]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   30.391308]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   30.396829]  ? syscall_return_slowpath+0x31d/0x5e0
[   30.401744]  ? sysret32_from_system_call+0x5/0x46
[   30.406577]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   30.411410]  entry_SYSENTER_compat+0x70/0x7f
[   30.415802] RIP: 0023:0xf7f50cb9
[   30.419146] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
[   30.438331] RSP: 002b:00000000ffb1181c EFLAGS: 00000246 ORIG_RAX: 0000000000000006
[   30.446032] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000008150138
[   30.453303] RDX: 0000000000000004 RSI: 0000000000000001 RDI: 00000000ffb11ed8
[   30.460556] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000
[   30.467808] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   30.475078] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   30.483428] Dumping ftrace buffer:
[   30.487129]    (ftrace buffer empty)
[   30.490818] Kernel Offset: disabled
[   30.494438] Rebooting in 86400 seconds..