[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   16.390969] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   19.764446] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   19.996969] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   20.792706] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available)
[   20.967024] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available)
Warning: Permanently added '10.128.15.213' (ECDSA) to the list of known hosts.
[   26.350779] random: sshd: uninitialized urandom read (32 bytes read, 110 bits of entropy available)
executing program
[   26.448960] kasan: CONFIG_KASAN_INLINE enabled
[   26.453594] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   26.467908] Dumping ftrace buffer:
[   26.471413]    (ftrace buffer empty)
[   26.475097] Modules linked in:
[   26.478365] CPU: 1 PID: 3320 Comm: syzkaller245471 Not tainted 4.4.107-g610c835 #4
[   26.486033] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   26.496623] task: ffff8800b4eec740 task.stack: ffff8801d0848000
[   26.502653] RIP: 0010:[<ffffffff825bb1cd>]  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   26.510700] RSP: 0018:ffff8801d084fa80  EFLAGS: 00010246
[   26.516112] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bb194
[   26.523345] RDX: 0000000000000000 RSI: 000000002066ffd5 RDI: ffff8801cc644370
[   26.530580] RBP: ffff8801d084fb88 R08: 8551c99c2a45b4bd R09: 0000000000000001
[   26.537816] R10: 0000000000000000 R11: 1ffff1003a109f16 R12: 000000000000002b
[   26.545403] R13: 0000000000000000 R14: ffff8801d0fbb240 R15: ffff8801cc644340
[   26.552639] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009477840
[   26.560828] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   26.566674] CR2: 000000002066ffb1 CR3: 00000001d1497000 CR4: 00000000001406e0
[   26.573908] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.581142] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.588373] Stack:
[   26.590491]  ffffffff810dbb17 ffffffff83775058 ffff8800b4eec740 ffff8801cc644358
[   26.598470]  000000000000028a ffff8801cc644368 000000000000004f 0000000000000002
[   26.606182]  ffff8800b7de3400 0000000000001000 1ffff1003a109f5c 000000002066ffd5
[   26.606189] Call Trace:
[   26.606202]  [<ffffffff810dbb17>] ? do_page_fault+0x27/0x30
[   26.606209]  [<ffffffff83775058>] ? page_fault+0x28/0x30
[   26.606219]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   26.606225]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   26.606235]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   26.606244]  [<ffffffff8151b341>] do_loop_readv_writev+0x141/0x1e0
[   26.606251]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   26.606257]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   26.606264]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   26.606270]  [<ffffffff8151dedf>] compat_do_readv_writev+0x5df/0x6e0
[   26.606276]  [<ffffffff8151d900>] ? vfs_writev+0xb0/0xb0
[   26.606283]  [<ffffffff8377322c>] ? _raw_spin_unlock+0x2c/0x50
[   26.606291]  [<ffffffff8149e232>] ? handle_mm_fault+0x3f2/0x3190
[   26.606297]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   26.606304]  [<ffffffff8151e0b9>] compat_readv+0xd9/0x140
[   26.606309]  [<ffffffff81520448>] compat_SyS_readv+0xd8/0x1b0
[   26.606314]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   26.606321]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   26.606326]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   26.606332]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   26.606338]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   26.606425] 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 
[   26.606432] RIP  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   26.606434]  RSP <ffff8801d084fa80>
[   26.610976] ---[ end trace 38f846059fec801c ]---
[   26.610980] Kernel panic - not syncing: Fatal exception
[   26.611667] Dumping ftrace buffer:
[   26.611670]    (ftrace buffer empty)
[   26.611673] Kernel Offset: disabled
[   26.797074] Rebooting in 86400 seconds..