[   15.858387] 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: [   22.021305] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   22.266103] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   23.151137] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available)
[   29.195359] random: sshd: uninitialized urandom read (32 bytes read, 113 bits of entropy available)
Warning: Permanently added '10.128.0.27' (ECDSA) to the list of known hosts.
[   34.675910] random: sshd: uninitialized urandom read (32 bytes read, 117 bits of entropy available)
executing program
[   34.766839] sg_write: data in/out 9964/6 bytes for SCSI command 0x0-- guessing data in;
[   34.766839]    program syzkaller233825 not setting count and/or reply_len properly
[   34.783041] kasan: CONFIG_KASAN_INLINE enabled
[   34.787423] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   34.800258] Dumping ftrace buffer:
[   34.803766]    (ftrace buffer empty)
[   34.807446] Modules linked in:
[   34.810722] CPU: 1 PID: 3319 Comm: syzkaller233825 Not tainted 4.4.111-gc2f631b #20
[   34.818483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.827809] task: ffff8800b5344740 task.stack: ffff8800b45a0000
[   34.833834] RIP: 0010:[<ffffffff81433621>]  [<ffffffff81433621>] __free_pages+0x21/0x90
[   34.842066] RSP: 0018:ffff8800b45a7970  EFLAGS: 00010a07
[   34.847480] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b9f5b
[   34.854719] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   34.861958] RBP: ffff8800b45a7980 R08: 0000000000000001 R09: 0000000000000000
[   34.869195] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   34.876431] R13: 0000000000000020 R14: ffff8801d07a0000 R15: dffffc0000000000
[   34.883671] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009bfe840
[   34.891863] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   34.897711] CR2: 0000000020ef0fe0 CR3: 00000000b4e12000 CR4: 0000000000160670
[   34.904948] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.912184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.919419] Stack:
[   34.921534]  0000000000000000 ffff8801d07a0158 ffff8800b45a79e0 ffffffff825b9f81
[   34.929497]  ffff8801d07a0170 ffffed003a0f402b ffffed003a0f402e ffff8801d07a0168
[   34.937455]  dead4ead00000000 ffff8801d07a0140 0000000000000000 0000000000000000
[   34.945422] Call Trace:
[   34.947984]  [<ffffffff825b9f81>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   34.954443]  [<ffffffff825ba345>] sg_finish_rem_req+0x2b5/0x340
[   34.960467]  [<ffffffff825ba409>] sg_new_read.isra.18+0x39/0x3c0
[   34.966580]  [<ffffffff825b8702>] ? sg_get_rq_mark+0x142/0x190
[   34.972516]  [<ffffffff825bc002>] sg_read+0x8c2/0x1490
[   34.977763]  [<ffffffff810dcd87>] ? do_page_fault+0x27/0x30
[   34.983441]  [<ffffffff83776d48>] ? page_fault+0x28/0x30
[   34.988861]  [<ffffffff825bb740>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   34.995495]  [<ffffffff815e9bb0>] ? fsnotify+0xee0/0xee0
[   35.000912]  [<ffffffff81b4e009>] ? avc_policy_seqno+0x9/0x20
[   35.006763]  [<ffffffff8151cc51>] do_loop_readv_writev+0x141/0x1e0
[   35.013047]  [<ffffffff81b44ef9>] ? security_file_permission+0x89/0x1e0
[   35.019768]  [<ffffffff825bb740>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   35.026401]  [<ffffffff825bb740>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   35.033034]  [<ffffffff8151f7ef>] compat_do_readv_writev+0x5df/0x6e0
[   35.039493]  [<ffffffff8151f210>] ? vfs_writev+0xb0/0xb0
[   35.044909]  [<ffffffff83774dfc>] ? _raw_spin_unlock+0x2c/0x50
[   35.050847]  [<ffffffff8149f8e2>] ? handle_mm_fault+0x3f2/0x3190
[   35.056956]  [<ffffffff8151f9c9>] compat_readv+0xd9/0x140
[   35.062461]  [<ffffffff81521d58>] compat_SyS_readv+0xd8/0x1b0
[   35.068317]  [<ffffffff81521c80>] ? SyS_pwritev+0x230/0x230
[   35.073997]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   35.080199]  [<ffffffff81521c80>] ? SyS_pwritev+0x230/0x230
[   35.085878]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   35.092002]  [<ffffffff837772aa>] sysenter_flags_fixed+0xd/0x17
[   35.098025] Code: 96 a4 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 
[   35.124535] RIP  [<ffffffff81433621>] __free_pages+0x21/0x90
[   35.130423]  RSP <ffff8800b45a7970>
[   35.134244] ---[ end trace d12a87d78ffec8f3 ]---
[   35.138976] Kernel panic - not syncing: Fatal exception
[   35.144673] Dumping ftrace buffer:
[   35.148186]    (ftrace buffer empty)
[   35.151870] Kernel Offset: disabled
[   35.155467] Rebooting in 86400 seconds..