[   18.503462] random: sshd: uninitialized urandom read (32 bytes read, 31 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: [   20.380498] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)
[   20.576280] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)
[   21.326756] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available)
[   21.488931] random: sshd: uninitialized urandom read (32 bytes read, 106 bits of entropy available)
Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts.
[   26.869333] random: sshd: uninitialized urandom read (32 bytes read, 114 bits of entropy available)
executing program
[   26.951636] kasan: CONFIG_KASAN_INLINE enabled
[   26.956055] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   26.969247] Dumping ftrace buffer:
[   26.972758]    (ftrace buffer empty)
[   26.976435] Modules linked in:
[   26.979712] CPU: 1 PID: 3777 Comm: syzkaller195010 Not tainted 4.4.115-g78d59f1 #12
[   26.987470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   26.996791] task: ffff8800aa554800 task.stack: ffff8801d8c78000
[   27.002815] RIP: 0010:[<ffffffff81434901>]  [<ffffffff81434901>] __free_pages+0x21/0x90
[   27.011044] RSP: 0018:ffff8801d8c7fab0  EFLAGS: 00010a07
[   27.016459] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b878b
[   27.023695] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   27.030932] RBP: ffff8801d8c7fac0 R08: 0000000000000000 R09: 0000000000000000
[   27.038170] R10: 0000000000000000 R11: 1ffff1003b18ff34 R12: 0000000000000004
[   27.045411] R13: 0000000000000020 R14: ffff8801d8ce0000 R15: dffffc0000000000
[   27.052650] FS:  0000000002377880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   27.060841] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.066691] CR2: 0000000020e7d000 CR3: 00000001d8c46000 CR4: 0000000000160670
[   27.073931] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.081169] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.088425] Stack:
[   27.090547]  ffffffff83775169 ffff8801d8ce0158 ffff8801d8c7fb20 ffffffff825b87b1
[   27.098521]  ffff8801d8ce0170 ffffed003b19c02b ffffed003b19c02e ffff8801d8ce0168
[   27.106481]  dead4ead00000000 ffff8801d8ce0140 0000000000000000 0000000000000000
[   27.114438] Call Trace:
[   27.116995]  [<ffffffff83775169>] ? retint_kernel+0x2d/0x2d
[   27.122676]  [<ffffffff825b87b1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   27.129134]  [<ffffffff825b8b75>] sg_finish_rem_req+0x2b5/0x340
[   27.135162]  [<ffffffff825b8f36>] sg_new_read.isra.18+0x336/0x3c0
[   27.141362]  [<ffffffff825ba89c>] sg_read+0x8bc/0x1490
[   27.146607]  [<ffffffff825b9fe0>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   27.153242]  [<ffffffff81d67042>] ? debug_check_no_obj_freed+0x2d2/0x9b0
[   27.160049]  [<ffffffff83773b25>] ? _raw_spin_unlock_irqrestore+0x45/0x70
[   27.166945]  [<ffffffff825b9fe0>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   27.173586]  [<ffffffff8151d033>] __vfs_read+0x103/0x440
[   27.179006]  [<ffffffff8151cf30>] ? vfs_iter_write+0x2d0/0x2d0
[   27.184944]  [<ffffffff815e988d>] ? fsnotify+0x5ad/0xee0
[   27.190359]  [<ffffffff815ea1c0>] ? fsnotify+0xee0/0xee0
[   27.195789]  [<ffffffff81b4d029>] ? avc_policy_seqno+0x9/0x20
[   27.201643]  [<ffffffff81b5e6f8>] ? selinux_file_permission+0x348/0x460
[   27.208368]  [<ffffffff81b43f29>] ? security_file_permission+0x89/0x1e0
[   27.215090]  [<ffffffff8151ebc0>] ? rw_verify_area+0x100/0x2f0
[   27.221030]  [<ffffffff8151eed3>] vfs_read+0x123/0x3a0
[   27.226272]  [<ffffffff81521819>] SyS_read+0xd9/0x1b0
[   27.231427]  [<ffffffff81521740>] ? do_sendfile+0xd30/0xd30
[   27.237107]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   27.243567]  [<ffffffff8377455f>] entry_SYSCALL_64_fastpath+0x1c/0x98
[   27.250109] Code: c6 9f 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 
[   27.276658] RIP  [<ffffffff81434901>] __free_pages+0x21/0x90
[   27.282549]  RSP <ffff8801d8c7fab0>
[   27.286486] ---[ end trace 7a27c5ec0f2c01d7 ]---
[   27.291251] Kernel panic - not syncing: Fatal exception
[   27.297050] Dumping ftrace buffer:
[   27.300562]    (ftrace buffer empty)
[   27.304239] Kernel Offset: disabled
[   27.307833] Rebooting in 86400 seconds..