[   16.230527] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   21.537825] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.886021] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   22.648865] random: sshd: uninitialized urandom read (32 bytes read, 86 bits of entropy available)
[   55.516515] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available)
Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts.
[   60.940805] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available)
executing program
[   61.033692] kasan: CONFIG_KASAN_INLINE enabled
[   61.038346] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   61.051183] Dumping ftrace buffer:
[   61.054691]    (ftrace buffer empty)
[   61.058373] Modules linked in:
[   61.061649] CPU: 1 PID: 3341 Comm: syzkaller549589 Not tainted 4.4.107-g610c835 #4
[   61.069320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   61.078641] task: ffff8801d19f0000 task.stack: ffff8801cc9a8000
[   61.084666] RIP: 0010:[<ffffffff825bb1cd>]  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   61.092738] RSP: 0018:ffff8801cc9afa80  EFLAGS: 00010246
[   61.098153] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bb194
[   61.105388] RDX: 0000000000000000 RSI: 0000000020001024 RDI: ffff8801d12b8170
[   61.112626] RBP: ffff8801cc9afb88 R08: 8551c99c2a45b4bd R09: 0000000000000001
[   61.119864] R10: 0000000000000000 R11: 1ffff10039935f16 R12: 0000000000000037
[   61.127105] R13: 0000000000000000 R14: ffff8800b45c7ae0 R15: ffff8801d12b8140
[   61.134361] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008bab840
[   61.142566] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   61.148418] CR2: 000000002002a000 CR3: 00000001d54cd000 CR4: 00000000001406e0
[   61.155659] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   61.162901] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   61.170141] Stack:
[   61.172261]  ffffffff825c44c0 0000000000000282 c73367af1fb468ae ffff8801d12b8158
[   61.180209]  66d2c04410a0ba7d ffff8801d12b8168 000000000000005b 00000000c454cd53
[   61.188164]  ffff8800b7e91180 0000000000001000 1ffff10039935f5c 0000000020001024
[   61.196119] Call Trace:
[   61.198685]  [<ffffffff825c44c0>] ? sg_ioctl+0x2c20/0x2c20
[   61.204276]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   61.210910]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   61.216326]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   61.222178]  [<ffffffff8151b341>] do_loop_readv_writev+0x141/0x1e0
[   61.228465]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   61.235181]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   61.241843]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   61.248486]  [<ffffffff8151dedf>] compat_do_readv_writev+0x5df/0x6e0
[   61.254944]  [<ffffffff8151d900>] ? vfs_writev+0xb0/0xb0
[   61.260359]  [<ffffffff8151aebb>] ? __vfs_write+0x10b/0x450
[   61.266036]  [<ffffffff83773325>] ? _raw_spin_unlock_irqrestore+0x45/0x70
[   61.272927]  [<ffffffff814fc5fb>] ? quarantine_put+0xab/0x180
[   61.278781]  [<ffffffff81233a2b>] ? trace_hardirqs_on_caller+0x38b/0x590
[   61.285586]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   61.291525]  [<ffffffff8151e0b9>] compat_readv+0xd9/0x140
[   61.297025]  [<ffffffff81520448>] compat_SyS_readv+0xd8/0x1b0
[   61.302874]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   61.308554]  [<ffffffff8148979e>] ? vmacache_update+0xfe/0x130
[   61.314493]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   61.320689]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   61.326368]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   61.332481]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   61.338502] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 97 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 6b 06 00 00 48 8b 1b 48 85 db 0f 84 3b 03 00 
[   61.364868] RIP  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   61.370586]  RSP <ffff8801cc9afa80>
[   61.374531] ---[ end trace 436c42a3ebafd5d3 ]---
[   61.379322] Kernel panic - not syncing: Fatal exception
[   61.385054] Dumping ftrace buffer:
[   61.388575]    (ftrace buffer empty)
[   61.392262] Kernel Offset: disabled
[   61.395858] Rebooting in 86400 seconds..