[   16.186687] random: sshd: uninitialized urandom read (32 bytes read, 33 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: [   20.385722] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available)
[   20.678160] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available)
[   21.412638] random: sshd: uninitialized urandom read (32 bytes read, 85 bits of entropy available)
[   21.578052] random: sshd: uninitialized urandom read (32 bytes read, 89 bits of entropy available)
Warning: Permanently added '10.128.15.217' (ECDSA) to the list of known hosts.
[   26.952299] random: sshd: uninitialized urandom read (32 bytes read, 93 bits of entropy available)
executing program
[   27.039426] sg_write: data in/out 29964/54 bytes for SCSI command 0x10-- guessing data in;
[   27.039426]    program syzkaller110635 not setting count and/or reply_len properly
[   27.055961] kasan: CONFIG_KASAN_INLINE enabled
[   27.060356] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.073169] Dumping ftrace buffer:
[   27.076669]    (ftrace buffer empty)
[   27.080354] Modules linked in:
[   27.083624] CPU: 0 PID: 3312 Comm: syzkaller110635 Not tainted 4.4.107-g610c835 #4
[   27.091294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.100620] task: ffff8801d1ecc740 task.stack: ffff8800b4800000
[   27.106643] RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90
[   27.114865] RSP: 0018:ffff8800b4807a40  EFLAGS: 00010a07
[   27.120281] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
[   27.127516] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   27.134750] RBP: ffff8800b4807a50 R08: 0000000000000001 R09: 0000000000000000
[   27.141984] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   27.149218] R13: 0000000000000020 R14: ffff8800b4a94200 R15: dffffc0000000000
[   27.156454] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000935c840
[   27.164645] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   27.170490] CR2: 0000000020001000 CR3: 00000000b101e000 CR4: 00000000001406f0
[   27.177724] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.184956] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.192189] Stack:
[   27.194300]  0000000000000000 ffff8800b4a94358 ffff8800b4807ab0 ffffffff825b8cf1
[   27.202236]  ffff8800b4a94370 ffffed001695286b ffffed001695286e ffff8800b4a94368
[   27.210173]  dead4ead00000000 ffff8800b4a94340 0000000000000000 0000000000000000
[   27.218110] Call Trace:
[   27.220663]  [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   27.227116]  [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340
[   27.233137]  [<ffffffff825b9179>] sg_new_read.isra.18+0x39/0x3c0
[   27.239252]  [<ffffffff825b7472>] ? sg_get_rq_mark+0x142/0x190
[   27.245184]  [<ffffffff825bad72>] sg_read+0x8c2/0x1490
[   27.250425]  [<ffffffff81435020>] ? __alloc_pages_direct_compact+0x250/0x250
[   27.257572]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.264200]  [<ffffffff8122cf91>] ? __lock_is_held+0xa1/0xf0
[   27.269962]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.276590]  [<ffffffff8151aa73>] __vfs_read+0x103/0x440
[   27.282002]  [<ffffffff8151a970>] ? vfs_iter_write+0x2d0/0x2d0
[   27.287934]  [<ffffffff815e878d>] ? fsnotify+0x5ad/0xee0
[   27.293346]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   27.298762]  [<ffffffff8377322c>] ? _raw_spin_unlock+0x2c/0x50
[   27.304698]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   27.310545]  [<ffffffff81b5ebe8>] ? selinux_file_permission+0x348/0x460
[   27.317259]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   27.323975]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   27.329908]  [<ffffffff8151c913>] vfs_read+0x123/0x3a0
[   27.335155]  [<ffffffff8151f259>] SyS_read+0xd9/0x1b0
[   27.340309]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   27.345983]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   27.352176]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   27.357852]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   27.363960]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   27.369977] Code: 76 ae 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 
[   27.396249] RIP  [<ffffffff81431331>] __free_pages+0x21/0x90
[   27.402121]  RSP <ffff8800b4807a40>
[   27.405988] ---[ end trace a5f1e163c9c4f18f ]---
[   27.410728] Kernel panic - not syncing: Fatal exception
[   27.416426] Dumping ftrace buffer:
[   27.419930]    (ftrace buffer empty)
[   27.423606] Kernel Offset: disabled
[   27.427197] Rebooting in 86400 seconds..