[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   18.465778] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.612866] random: sshd: uninitialized urandom read (32 bytes read)
[   23.904845] random: sshd: uninitialized urandom read (32 bytes read)
[   24.773814] random: sshd: uninitialized urandom read (32 bytes read)
[   25.383706] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.47' (ECDSA) to the list of known hosts.
[   30.806226] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/19 10:32:48 parsed 1 programs
[   32.315960] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/19 10:32:50 executed programs: 0
[   33.455425] IPVS: ftp: loaded support on port[0] = 21
[   33.577421] WARNING: CPU: 1 PID: 4552 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0
[   33.585888] Kernel panic - not syncing: panic_on_warn set ...
[   33.585888] 
[   33.593259] CPU: 1 PID: 4552 Comm: syz-executor0 Not tainted 4.18.0-rc5+ #56
[   33.600436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.609780] Call Trace:
[   33.612376]  dump_stack+0x1c9/0x2b4
[   33.616001]  ? dump_stack_print_info.cold.2+0x52/0x52
[   33.621195]  panic+0x238/0x4e7
[   33.624376]  ? add_taint.cold.5+0x16/0x16
[   33.628517]  ? __warn.cold.8+0x148/0x1ba
[   33.632575]  ? __warn.cold.8+0x117/0x1ba
[   33.636630]  ? smc_unhash_sk+0x357/0x4b0
[   33.640675]  __warn.cold.8+0x163/0x1ba
[   33.644548]  ? smc_unhash_sk+0x357/0x4b0
[   33.648591]  report_bug+0x252/0x2d0
[   33.652202]  do_error_trap+0x1fc/0x4d0
[   33.656076]  ? graph_lock+0x170/0x170
[   33.659870]  ? math_error+0x3e0/0x3e0
[   33.663657]  ? lock_acquire+0x1e4/0x540
[   33.667626]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.672450]  do_invalid_op+0x1b/0x20
[   33.676158]  invalid_op+0x14/0x20
[   33.679596] RIP: 0010:smc_unhash_sk+0x357/0x4b0
[   33.684240] 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 c9 52 1a fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 b3 31 58 fa 
[   33.703522] RSP: 0018:ffff8801d8d1f9f8 EFLAGS: 00010293
[   33.708887] RAX: ffff8801ac7380c0 RBX: ffff8801d89b10c0 RCX: ffffffff8761b7f6
[   33.716157] RDX: 0000000000000000 RSI: ffffffff8761b8b7 RDI: 0000000000000005
[   33.723423] RBP: ffff8801d8d1fae0 R08: ffff8801ac7380c0 R09: ffffed003b136228
[   33.730703] R10: ffffed003b136228 R11: ffff8801d89b1143 R12: 1ffff1003b1a3f43
[   33.737973] R13: ffff8801d8d1fab8 R14: ffffffff89937480 R15: ffff8801d89b1140
[   33.745250]  ? smc_unhash_sk+0x296/0x4b0
[   33.749319]  ? smc_unhash_sk+0x357/0x4b0
[   33.753379]  ? smc_unhash_sk+0x357/0x4b0
[   33.757435]  ? smc_rx_data_available+0x120/0x120
[   33.762180]  ? release_sock+0x1ec/0x2c0
[   33.766143]  ? __local_bh_enable_ip+0x161/0x230
[   33.770794]  ? __release_sock+0x3a0/0x3a0
[   33.774933]  ? smc_release+0x2c9/0x670
[   33.778827]  ? trace_hardirqs_on+0xd/0x10
[   33.782958]  ? __local_bh_enable_ip+0x161/0x230
[   33.787617]  smc_release+0x3cf/0x670
[   33.791330]  __sock_release+0xd7/0x260
[   33.795200]  ? __sock_release+0x260/0x260
[   33.799328]  sock_close+0x19/0x20
[   33.802763]  __fput+0x355/0x8b0
[   33.806042]  ? fput+0x1a0/0x1a0
[   33.809320]  ? _raw_spin_unlock_irq+0x27/0x70
[   33.813798]  ____fput+0x15/0x20
[   33.817064]  task_work_run+0x1ec/0x2a0
[   33.820935]  ? task_work_cancel+0x250/0x250
[   33.825252]  ? exit_to_usermode_loop+0x8c/0x370
[   33.829931]  exit_to_usermode_loop+0x313/0x370
[   33.834849]  ? syscall_slow_exit_work+0x500/0x500
[   33.839679]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.845210]  do_fast_syscall_32+0xcd5/0xfb2
[   33.849519]  ? do_int80_syscall_32+0x890/0x890
[   33.854082]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   33.858824]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.864345]  ? syscall_return_slowpath+0x31d/0x5e0
[   33.869278]  ? sysret32_from_system_call+0x5/0x46
[   33.874106]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.878930]  entry_SYSENTER_compat+0x70/0x7f
[   33.883328] RIP: 0023:0xf7fd7cb9
[   33.886670] 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 
[   33.905846] RSP: 002b:00000000ffc2164c EFLAGS: 00000246 ORIG_RAX: 0000000000000006
[   33.913552] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000081501c0
[   33.920803] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 00000000ffc21d08
[   33.928228] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000
[   33.935480] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   33.942820] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.951036] Dumping ftrace buffer:
[   33.954680]    (ftrace buffer empty)
[   33.958374] Kernel Offset: disabled
[   33.961998] Rebooting in 86400 seconds..