[   21.681904] random: sshd: uninitialized urandom read (32 bytes read, 35 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: [   25.539290] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available)
[   25.908036] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available)
[   26.886652] random: sshd: uninitialized urandom read (32 bytes read, 121 bits of entropy available)
[   27.055638] random: sshd: uninitialized urandom read (32 bytes read, 124 bits of entropy available)
[   31.333392] random: nonblocking pool is initialized
Warning: Permanently added '10.128.0.46' (ECDSA) to the list of known hosts.
executing program
[   32.619990] kasan: CONFIG_KASAN_INLINE enabled
[   32.624889] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   32.637705] Dumping ftrace buffer:
[   32.641212]    (ftrace buffer empty)
[   32.644889] Modules linked in:
[   32.648163] CPU: 1 PID: 3793 Comm: syzkaller133305 Not tainted 4.4.124-g851fb4d #60
[   32.655921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.665243] task: ffff8801d8e71800 task.stack: ffff8801d8c98000
[   32.671268] RIP: 0010:[<ffffffff81434eb1>]  [<ffffffff81434eb1>] __free_pages+0x21/0x90
[   32.679497] RSP: 0018:ffff8801d8c9faa8  EFLAGS: 00010a07
[   32.684922] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825bb03b
[   32.692158] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   32.699400] RBP: ffff8801d8c9fab8 R08: 0000000000000001 R09: 0000000000000000
[   32.706638] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   32.713876] R13: 0000000000000020 R14: ffff8801c51d4200 R15: dffffc0000000000
[   32.721115] FS:  0000000001bd8880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   32.729307] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.735154] CR2: 000000002012f000 CR3: 00000001cd538000 CR4: 0000000000160670
[   32.742394] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.749631] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.756873] Stack:
[   32.758989]  0000000000000000 ffff8801c51d4358 ffff8801d8c9fb18 ffffffff825bb061
[   32.766962]  ffff8801c51d4370 ffffed0038a3a86b ffffed0038a3a86e ffff8801c51d4368
[   32.774933]  dead4ead00000000 ffff8801c51d4340 0000000000000000 0000000000000000
[   32.782894] Call Trace:
[   32.785460]  [<ffffffff825bb061>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   32.791918]  [<ffffffff825bb416>] sg_finish_rem_req+0x2a6/0x320
[   32.797945]  [<ffffffff81236f3b>] ? trace_hardirqs_on_caller+0x38b/0x590
[   32.804750]  [<ffffffff825bb4cc>] sg_new_read+0x3c/0x420
[   32.810170]  [<ffffffff825b97e2>] ? sg_get_rq_mark+0x142/0x190
[   32.816108]  [<ffffffff825bd19f>] sg_read+0x8cf/0x14d0
[   32.821353]  [<ffffffff812304b1>] ? __lock_is_held+0xa1/0xf0
[   32.827120]  [<ffffffff825bc8d0>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   32.833757]  [<ffffffff8150e929>] ? do_huge_pmd_anonymous_page+0x549/0xa10
[   32.840738]  [<ffffffff825bc8d0>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   32.847371]  [<ffffffff8151d6e3>] __vfs_read+0x103/0x440
[   32.852794]  [<ffffffff8151d5e0>] ? vfs_iter_write+0x2d0/0x2d0
[   32.858738]  [<ffffffff815ea0cd>] ? fsnotify+0x5ad/0xee0
[   32.864154]  [<ffffffff815eaa00>] ? fsnotify+0xee0/0xee0
[   32.869568]  [<ffffffff81b4f719>] ? avc_policy_seqno+0x9/0x20
[   32.875432]  [<ffffffff81b60de8>] ? selinux_file_permission+0x348/0x460
[   32.882156]  [<ffffffff81b46619>] ? security_file_permission+0x89/0x1e0
[   32.888874]  [<ffffffff8151f270>] ? rw_verify_area+0x100/0x2f0
[   32.894817]  [<ffffffff8151f583>] vfs_read+0x123/0x3a0
[   32.900059]  [<ffffffff81521ec9>] SyS_read+0xd9/0x1b0
[   32.905215]  [<ffffffff81521df0>] ? do_sendfile+0xd30/0xd30
[   32.910891]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   32.917352]  [<ffffffff837796e5>] entry_SYSCALL_64_fastpath+0x22/0x9e
[   32.923895] Code: c6 a0 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 
[   32.950369] RIP  [<ffffffff81434eb1>] __free_pages+0x21/0x90
[   32.956260]  RSP <ffff8801d8c9faa8>
[   32.960103] ---[ end trace 3f90011d13096bd4 ]---
[   32.964860] Kernel panic - not syncing: Fatal exception
[   32.970694] Dumping ftrace buffer:
[   32.974203]    (ftrace buffer empty)
[   32.977888] Kernel Offset: disabled
[   32.981481] Rebooting in 86400 seconds..