[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   19.474805] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.163209] random: sshd: uninitialized urandom read (32 bytes read)
[   23.495011] random: sshd: uninitialized urandom read (32 bytes read)
[   24.367411] random: sshd: uninitialized urandom read (32 bytes read)
[   24.515689] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.14' (ECDSA) to the list of known hosts.
[   29.974462] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/16 08:12:51 parsed 1 programs
[   31.568291] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/16 08:12:54 executed programs: 0
[   32.763500] IPVS: ftp: loaded support on port[0] = 21
[   32.879856] WARNING: CPU: 1 PID: 4602 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0
[   32.888295] Kernel panic - not syncing: panic_on_warn set ...
[   32.888295] 
[   32.895667] CPU: 1 PID: 4602 Comm: syz-executor0 Not tainted 4.18.0-rc5+ #52
[   32.902834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.912177] Call Trace:
[   32.914776]  dump_stack+0x1c9/0x2b4
[   32.918388]  ? dump_stack_print_info.cold.2+0x52/0x52
[   32.923565]  panic+0x238/0x4e7
[   32.926742]  ? add_taint.cold.5+0x16/0x16
[   32.930874]  ? __warn.cold.8+0x148/0x1ba
[   32.934925]  ? __warn.cold.8+0x117/0x1ba
[   32.938992]  ? smc_unhash_sk+0x357/0x4b0
[   32.943051]  __warn.cold.8+0x163/0x1ba
[   32.946952]  ? smc_unhash_sk+0x357/0x4b0
[   32.950997]  report_bug+0x252/0x2d0
[   32.954615]  do_error_trap+0x1fc/0x4d0
[   32.958496]  ? graph_lock+0x170/0x170
[   32.962279]  ? math_error+0x3e0/0x3e0
[   32.966075]  ? lock_acquire+0x1e4/0x540
[   32.970047]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.974884]  do_invalid_op+0x1b/0x20
[   32.978586]  invalid_op+0x14/0x20
[   32.982034] RIP: 0010:smc_unhash_sk+0x357/0x4b0
[   32.986686] 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 89 42 1a fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 73 21 58 fa 
[   33.005872] RSP: 0018:ffff8801d909f9f8 EFLAGS: 00010293
[   33.011231] RAX: ffff8801d9344580 RBX: ffff8801d8e590c0 RCX: ffffffff8761c7f6
[   33.018480] RDX: 0000000000000000 RSI: ffffffff8761c8b7 RDI: 0000000000000005
[   33.025730] RBP: ffff8801d909fae0 R08: ffff8801d9344580 R09: ffffed003b1cb228
[   33.032981] R10: ffffed003b1cb228 R11: ffff8801d8e59143 R12: 1ffff1003b213f43
[   33.040255] R13: ffff8801d909fab8 R14: ffffffff899373c0 R15: ffff8801d8e59140
[   33.047528]  ? smc_unhash_sk+0x296/0x4b0
[   33.051577]  ? smc_unhash_sk+0x357/0x4b0
[   33.055623]  ? smc_unhash_sk+0x357/0x4b0
[   33.059668]  ? smc_rx_data_available+0x120/0x120
[   33.064405]  ? release_sock+0x1ec/0x2c0
[   33.068364]  ? __local_bh_enable_ip+0x161/0x230
[   33.073021]  ? __release_sock+0x3a0/0x3a0
[   33.077159]  ? smc_release+0x2c9/0x670
[   33.081039]  ? trace_hardirqs_on+0xd/0x10
[   33.085169]  ? __local_bh_enable_ip+0x161/0x230
[   33.089824]  smc_release+0x3cf/0x670
[   33.093539]  __sock_release+0xd7/0x260
[   33.097409]  ? __sock_release+0x260/0x260
[   33.101541]  sock_close+0x19/0x20
[   33.104981]  __fput+0x355/0x8b0
[   33.108248]  ? fput+0x1a0/0x1a0
[   33.111513]  ? _raw_spin_unlock_irq+0x27/0x70
[   33.116021]  ____fput+0x15/0x20
[   33.119293]  task_work_run+0x1ec/0x2a0
[   33.123175]  ? task_work_cancel+0x250/0x250
[   33.127491]  ? exit_to_usermode_loop+0x8c/0x370
[   33.132163]  exit_to_usermode_loop+0x313/0x370
[   33.136730]  ? syscall_slow_exit_work+0x500/0x500
[   33.141554]  ? mm_fault_error+0x380/0x380
[   33.145696]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.151229]  do_fast_syscall_32+0xcd5/0xfb2
[   33.155535]  ? do_int80_syscall_32+0x890/0x890
[   33.160097]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   33.164850]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.170369]  ? syscall_return_slowpath+0x31d/0x5e0
[   33.175284]  ? sysret32_from_system_call+0x5/0x46
[   33.180123]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.184960]  entry_SYSENTER_compat+0x70/0x7f
[   33.189349] RIP: 0023:0xf7fc3cb9
[   33.192697] 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 
[   33.211921] RSP: 002b:00000000ff883bdc EFLAGS: 00000246 ORIG_RAX: 0000000000000006
[   33.219624] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000008150420
[   33.226892] RDX: 0000000000000004 RSI: 0000000000000001 RDI: 00000000ff884298
[   33.234153] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000
[   33.241411] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   33.248679] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.256698] Dumping ftrace buffer:
[   33.260391]    (ftrace buffer empty)
[   33.264093] Kernel Offset: disabled
[   33.267704] Rebooting in 86400 seconds..