[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   20.671616] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.883605] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   24.134875] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   25.212995] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available)
[   25.374999] random: sshd: uninitialized urandom read (32 bytes read, 123 bits of entropy available)
[   30.474526] random: nonblocking pool is initialized
Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts.
executing program
[   30.877675] sd 0:0:1:0: [sg0] tag#176 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
[   30.886303] sd 0:0:1:0: [sg0] tag#176 CDB: Test Unit Ready
[   30.891911] sd 0:0:1:0: [sg0] tag#176 CDB[00]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   30.896272] kasan: CONFIG_KASAN_INLINE enabled
[   30.896279] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   30.896284] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   30.896288] Dumping ftrace buffer:
[   30.896291]    (ftrace buffer empty)
[   30.896294] Modules linked in:
[   30.896301] CPU: 1 PID: 3741 Comm: syzkaller334411 Not tainted 4.4.119-g024f962 #26
[   30.896305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   30.896308] task: ffff8801c7c99800 task.stack: ffff8801d9300000
[   30.896323] RIP: 0010:[<ffffffff814346c1>]  [<ffffffff814346c1>] __free_pages+0x21/0x90
[   30.896326] RSP: 0018:ffff8801d9307b00  EFLAGS: 00010a07
[   30.896330] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b856b
[   30.896334] RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
[   30.896337] RBP: ffff8801d9307b10 R08: 0000000000000000 R09: 0000000000000001
[   30.896340] R10: 0000000000000000 R11: 1ffff1003b260f3e R12: 0000000000000004
[   30.896344] R13: 0000000000000020 R14: ffff8801d91c0000 R15: dffffc0000000000
[   30.896349] FS:  00007f1a2a90f700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   30.896353] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.896356] CR2: 00007f1a2a90ee78 CR3: 00000000ac13a000 CR4: 0000000000160670
[   30.896364] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.896367] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.896368] Stack:
[   30.896376]  0000000000000246 ffff8801d91c0158 ffff8801d9307b70 ffffffff825b8591
[   30.896383]  ffff8801d91c0170 ffffed003b23802b ffffed003b23802e ffff8801d91c0168
[   30.896390]  dead4ead00000000 ffff8801d91c0140 0000000000000000 0000000000000000
[   30.896391] Call Trace:
[   30.896403]  [<ffffffff825b8591>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   30.896409]  [<ffffffff825b8955>] sg_finish_rem_req+0x2b5/0x340
[   30.896415]  [<ffffffff825ba7db>] sg_read+0xa1b/0x1490
[   30.896422]  [<ffffffff825b9dc0>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   30.896431]  [<ffffffff81237410>] ? debug_check_no_locks_freed+0x2c0/0x2c0
[   30.896437]  [<ffffffff825b9dc0>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   30.896445]  [<ffffffff8151cef3>] __vfs_read+0x103/0x440
[   30.896451]  [<ffffffff8151cdf0>] ? vfs_iter_write+0x2d0/0x2d0
[   30.896458]  [<ffffffff815e97ed>] ? fsnotify+0x5ad/0xee0
[   30.896463]  [<ffffffff815ea120>] ? fsnotify+0xee0/0xee0
[   30.896471]  [<ffffffff81b4d189>] ? avc_policy_seqno+0x9/0x20
[   30.896477]  [<ffffffff81b5e858>] ? selinux_file_permission+0x348/0x460
[   30.896484]  [<ffffffff81b44089>] ? security_file_permission+0x89/0x1e0
[   30.896489]  [<ffffffff8151ea80>] ? rw_verify_area+0x100/0x2f0
[   30.896494]  [<ffffffff8151ed93>] vfs_read+0x123/0x3a0
[   30.896499]  [<ffffffff815216d9>] SyS_read+0xd9/0x1b0
[   30.896504]  [<ffffffff81521600>] ? do_sendfile+0xd30/0xd30
[   30.896511]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   30.896518]  [<ffffffff8377361f>] entry_SYSCALL_64_fastpath+0x1c/0x98
[   30.896605] 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 
[   30.896611] RIP  [<ffffffff814346c1>] __free_pages+0x21/0x90
[   30.896613]  RSP <ffff8801d9307b00>
[   30.896619] ---[ end trace c009ca1f1786a381 ]---
[   30.896623] Kernel panic - not syncing: Fatal exception
[   30.901089] Dumping ftrace buffer:
[   30.901091]    (ftrace buffer empty)
[   30.901093] Kernel Offset: disabled
[   31.228949] Rebooting in 86400 seconds..