[   16.029037] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   21.836705] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   22.193276] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   23.033707] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available)
[   23.203399] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available)
Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts.
[   28.576334] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available)
executing program
[   28.672372] kasan: CONFIG_KASAN_INLINE enabled
[   28.676779] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   28.689566] Dumping ftrace buffer:
[   28.693069]    (ftrace buffer empty)
[   28.696743] Modules linked in:
[   28.700011] CPU: 0 PID: 3313 Comm: syzkaller508285 Not tainted 4.4.107-g610c835 #4
[   28.707690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.717019] task: ffff8801d1f82f80 task.stack: ffff8801d0aa8000
[   28.723040] RIP: 0010:[<ffffffff825bb1cd>]  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   28.731093] RSP: 0018:ffff8801d0aafa80  EFLAGS: 00010246
[   28.736505] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bb194
[   28.743753] RDX: 0000000000000000 RSI: 0000000020188024 RDI: ffff8800b4170170
[   28.750989] RBP: ffff8801d0aafb88 R08: b54c6d8b5ad7cb0c R09: 0000000000000001
[   28.758229] R10: 0000000000000000 R11: 1ffff1003a155f16 R12: 000000000000006e
[   28.765464] R13: 0000000000000000 R14: ffff8801d0fdc720 R15: ffff8800b4170140
[   28.772708] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009870840
[   28.780899] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   28.786743] CR2: 0000000020188000 CR3: 00000001d0f91000 CR4: 00000000001406f0
[   28.793979] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.801214] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.808454] Stack:
[   28.810568]  0000000000000022 0000000000000022 ffff8801d0aafc40 ffff8800b4170158
[   28.818510]  0000000000000282 ffff8800b4170168 0000000000000092 00000000c454cd53
[   28.826461]  ffff8800b7d1f680 0000000000001000 1ffff1003a155f5c 0000000020188024
[   28.834411] Call Trace:
[   28.836967]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.843600]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   28.849028]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   28.854882]  [<ffffffff8151b341>] do_loop_readv_writev+0x141/0x1e0
[   28.861165]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   28.867883]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.874513]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.881144]  [<ffffffff8151dedf>] compat_do_readv_writev+0x5df/0x6e0
[   28.887598]  [<ffffffff8151d900>] ? vfs_writev+0xb0/0xb0
[   28.893010]  [<ffffffff81b446e9>] ? security_file_ioctl+0x89/0xb0
[   28.899205]  [<ffffffff8161d457>] ? compat_SyS_ioctl+0x117/0x2540
[   28.905399]  [<ffffffff8161d340>] ? compat_SyS_ppoll+0x420/0x420
[   28.911511]  [<ffffffff8149e232>] ? handle_mm_fault+0x3f2/0x3190
[   28.917619]  [<ffffffff8154ea6e>] ? putname+0xee/0x130
[   28.922863]  [<ffffffff81282f33>] ? rcu_read_lock_sched_held+0x103/0x120
[   28.929667]  [<ffffffff814f7dc4>] ? kmem_cache_free+0x2a4/0x320
[   28.935689]  [<ffffffff8151e0b9>] compat_readv+0xd9/0x140
[   28.941195]  [<ffffffff81520448>] compat_SyS_readv+0xd8/0x1b0
[   28.947046]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   28.952721]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   28.958917]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   28.964590]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   28.970708]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   28.976730] 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 
[   29.003073] RIP  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   29.008781]  RSP <ffff8801d0aafa80>
[   29.016047] ---[ end trace d3f4837d55cb365c ]---
[   29.021037] Kernel panic - not syncing: Fatal exception
[   29.026801] Dumping ftrace buffer:
[   29.030306]    (ftrace buffer empty)
[   29.033983] Kernel Offset: disabled
[   29.037575] Rebooting in 86400 seconds..