[   15.730832] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   19.928481] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   20.123913] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   20.962391] random: sshd: uninitialized urandom read (32 bytes read, 91 bits of entropy available)
[   32.101191] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available)
Warning: Permanently added '10.128.15.211' (ECDSA) to the list of known hosts.
[   37.498823] random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available)
executing program
[   37.589198] kasan: CONFIG_KASAN_INLINE enabled
[   37.593662] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   37.606466] Dumping ftrace buffer:
[   37.609974]    (ftrace buffer empty)
[   37.613654] Modules linked in:
[   37.616934] CPU: 1 PID: 3321 Comm: syzkaller610028 Not tainted 4.4.113-gef588ef #33
[   37.624692] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   37.634021] task: ffff8800b4330000 task.stack: ffff8800b4320000
[   37.640049] RIP: 0010:[<ffffffff81433721>]  [<ffffffff81433721>] __free_pages+0x21/0x90
[   37.648303] RSP: 0018:ffff8800b4327ab0  EFLAGS: 00010a07
[   37.653728] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b
[   37.660976] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   37.668217] RBP: ffff8800b4327ac0 R08: 0000000000000001 R09: 0000000000000000
[   37.675453] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   37.682688] R13: 0000000000000020 R14: ffff8801d128c200 R15: dffffc0000000000
[   37.689926] FS:  0000000001a42880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   37.698118] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.703969] CR2: 0000000020a2f000 CR3: 00000000b42e8000 CR4: 0000000000160670
[   37.711210] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   37.718447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   37.725689] Stack:
[   37.727804]  0000000000000000 ffff8801d128c358 ffff8800b4327b20 ffffffff825b6f51
[   37.735761]  ffff8801d128c370 ffffed003a25186b ffffed003a25186e ffff8801d128c368
[   37.743720]  dead4ead00000000 ffff8801d128c340 0000000000000000 0000000000000000
[   37.751682] Call Trace:
[   37.754241]  [<ffffffff825b6f51>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   37.760709]  [<ffffffff825b7315>] sg_finish_rem_req+0x2b5/0x340
[   37.766733]  [<ffffffff825b73d9>] sg_new_read.isra.18+0x39/0x3c0
[   37.772844]  [<ffffffff825b56d2>] ? sg_get_rq_mark+0x142/0x190
[   37.778788]  [<ffffffff825b903c>] sg_read+0x8bc/0x1490
[   37.784036]  [<ffffffff8122f101>] ? __lock_is_held+0xa1/0xf0
[   37.789798]  [<ffffffff825b8780>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   37.796441]  [<ffffffff8150d089>] ? do_huge_pmd_anonymous_page+0x549/0xa10
[   37.803421]  [<ffffffff825b8780>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   37.810054]  [<ffffffff8151bc93>] __vfs_read+0x103/0x440
[   37.815469]  [<ffffffff8151bb90>] ? vfs_iter_write+0x2d0/0x2d0
[   37.821405]  [<ffffffff815e829d>] ? fsnotify+0x5ad/0xee0
[   37.826820]  [<ffffffff815e8bd0>] ? fsnotify+0xee0/0xee0
[   37.832242]  [<ffffffff81b4b9c9>] ? avc_policy_seqno+0x9/0x20
[   37.838093]  [<ffffffff81b5d098>] ? selinux_file_permission+0x348/0x460
[   37.844822]  [<ffffffff81b428c9>] ? security_file_permission+0x89/0x1e0
[   37.851551]  [<ffffffff8151d820>] ? rw_verify_area+0x100/0x2f0
[   37.857490]  [<ffffffff8151db33>] vfs_read+0x123/0x3a0
[   37.862731]  [<ffffffff81520479>] SyS_read+0xd9/0x1b0
[   37.867887]  [<ffffffff815203a0>] ? do_sendfile+0xd30/0xd30
[   37.873569]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   37.880037]  [<ffffffff83771b5f>] entry_SYSCALL_64_fastpath+0x1c/0x98
[   37.886586] Code: b6 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 
[   37.913046] RIP  [<ffffffff81433721>] __free_pages+0x21/0x90
[   37.918930]  RSP <ffff8800b4327ab0>
[   37.923301] ---[ end trace 8d735fc9a6d6b0d5 ]---
[   37.928037] Kernel panic - not syncing: Fatal exception
[   37.933406] Dumping ftrace buffer:
[   37.936914]    (ftrace buffer empty)
[   37.940593] Kernel Offset: disabled
[   37.944199] Rebooting in 86400 seconds..