[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   16.511303] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   20.543934] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   20.840475] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.676940] random: sshd: uninitialized urandom read (32 bytes read, 102 bits of entropy available)
[   21.842539] random: sshd: uninitialized urandom read (32 bytes read, 106 bits of entropy available)
Warning: Permanently added '10.128.15.218' (ECDSA) to the list of known hosts.
[   27.224927] random: sshd: uninitialized urandom read (32 bytes read, 114 bits of entropy available)
executing program
[   27.337752] kasan: CONFIG_KASAN_INLINE enabled
[   27.342162] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.354966] Dumping ftrace buffer:
[   27.358469]    (ftrace buffer empty)
[   27.362144] Modules linked in:
[   27.365415] CPU: 0 PID: 3315 Comm: syzkaller864311 Not tainted 4.4.107-g610c835 #4
[   27.373082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.382456] task: ffff8801d23aaf80 task.stack: ffff8800b4d08000
[   27.388485] RIP: 0010:[<ffffffff825bb1cd>]  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   27.396542] RSP: 0018:ffff8800b4d0fb50  EFLAGS: 00010246
[   27.401955] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bb194
[   27.409196] RDX: 0000000000000000 RSI: 0000000020185f5a RDI: ffff8801d174a270
[   27.416439] RBP: ffff8800b4d0fc58 R08: 53054a2135708f0e R09: 0000000000000001
[   27.423688] R10: 0000000000000000 R11: 1ffff100169a1f30 R12: 00000000000000a6
[   27.430923] R13: 0000000000000000 R14: ffff8800b4cc2000 R15: ffff8801d174a240
[   27.438161] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009ff5840
[   27.446350] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   27.452201] CR2: 00000000209f0000 CR3: 00000000b5485000 CR4: 00000000001406f0
[   27.459437] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.466673] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.473905] Stack:
[   27.476025]  ffffffff81d63d8b ffffffff81d63d8b ffffffff84411e40 ffff8801d174a258
[   27.483968]  0000000000000246 ffff8801d174a268 00000000000000ca ffff8801da31b338
[   27.491911]  ffff8801d565ac80 0000000000001000 1ffff100169a1f76 0000000020185f5a
[   27.499859] Call Trace:
[   27.502413]  [<ffffffff81d63d8b>] ? check_preemption_disabled+0x3b/0x200
[   27.509216]  [<ffffffff81d63d8b>] ? check_preemption_disabled+0x3b/0x200
[   27.516021]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.522651]  [<ffffffff81282f33>] ? rcu_read_lock_sched_held+0x103/0x120
[   27.529461]  [<ffffffff814f7fe4>] ? kfree+0x1a4/0x300
[   27.534617]  [<ffffffff8151dac1>] ? compat_do_readv_writev+0x1c1/0x6e0
[   27.541247]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.547877]  [<ffffffff8151aa73>] __vfs_read+0x103/0x440
[   27.553290]  [<ffffffff8151a970>] ? vfs_iter_write+0x2d0/0x2d0
[   27.559227]  [<ffffffff815e878d>] ? fsnotify+0x5ad/0xee0
[   27.564644]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   27.570058]  [<ffffffff8377322c>] ? _raw_spin_unlock+0x2c/0x50
[   27.575995]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   27.581842]  [<ffffffff81b5ebe8>] ? selinux_file_permission+0x348/0x460
[   27.588559]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   27.595277]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   27.601209]  [<ffffffff8151c913>] vfs_read+0x123/0x3a0
[   27.606450]  [<ffffffff8151f259>] SyS_read+0xd9/0x1b0
[   27.611602]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   27.617276]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   27.623471]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   27.629148]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   27.635258]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   27.641282] 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 
[   27.667572] RIP  [<ffffffff825bb1cd>] sg_read+0xd1d/0x1490
[   27.673274]  RSP <ffff8800b4d0fb50>
[   27.676955] ---[ end trace 96684f2a45799eb6 ]---
[   27.681695] Kernel panic - not syncing: Fatal exception
[   27.687537] Dumping ftrace buffer:
[   27.691048]    (ftrace buffer empty)
[   27.694737] Kernel Offset: disabled
[   27.698329] Rebooting in 86400 seconds..