[   20.188047] 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.
[   21.407038] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   21.630273] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)
[   22.434577] random: sshd: uninitialized urandom read (32 bytes read, 99 bits of entropy available)
[   22.598962] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available)
Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts.
[   27.991613] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available)
executing program
[   28.083277] kasan: CONFIG_KASAN_INLINE enabled
[   28.087741] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   28.100546] Dumping ftrace buffer:
[   28.104052]    (ftrace buffer empty)
[   28.107730] Modules linked in:
[   28.111008] CPU: 0 PID: 3753 Comm: syzkaller117707 Not tainted 4.4.115-g55a366596 #14
[   28.118939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.128264] task: ffff8801c76d1800 task.stack: ffff8800ad150000
[   28.134285] RIP: 0010:[<ffffffff81434891>]  [<ffffffff81434891>] __free_pages+0x21/0x90
[   28.142524] RSP: 0018:ffff8800ad157ab0  EFLAGS: 00010a07
[   28.147941] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b870b
[   28.155177] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   28.162413] RBP: ffff8800ad157ac0 R08: 0000000000000000 R09: 0000000000000000
[   28.169649] R10: 0000000000000000 R11: 1ffff10015a2af36 R12: 0000000000000004
[   28.176889] R13: 0000000000000020 R14: ffff8801d9540000 R15: dffffc0000000000
[   28.184127] FS:  000000000239c880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   28.192328] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.198178] CR2: 0000000020a2f000 CR3: 00000001d94e4000 CR4: 0000000000160670
[   28.205426] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.212665] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.219904] Stack:
[   28.222018]  0000000000000000 ffff8801d9540158 ffff8800ad157b20 ffffffff825b8731
[   28.229978]  ffff8801d9540170 ffffed003b2a802b ffffed003b2a802e ffff8801d9540168
[   28.237954]  dead4ead00000000 ffff8801d9540140 0000000000000000 0000000000000000
[   28.245909] Call Trace:
[   28.248480]  [<ffffffff825b8731>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   28.254948]  [<ffffffff825b8af5>] sg_finish_rem_req+0x2b5/0x340
[   28.260973]  [<ffffffff825b8bb9>] sg_new_read.isra.18+0x39/0x3c0
[   28.267084]  [<ffffffff825b6eb2>] ? sg_get_rq_mark+0x142/0x190
[   28.273027]  [<ffffffff825ba81c>] sg_read+0x8bc/0x1490
[   28.278281]  [<ffffffff825b9f60>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   28.284936]  [<ffffffff8144a574>] ? __lru_cache_add+0x164/0x240
[   28.290971]  [<ffffffff8150e209>] ? do_huge_pmd_anonymous_page+0x549/0xa10
[   28.297957]  [<ffffffff825b9f60>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   28.304591]  [<ffffffff8151cfc3>] __vfs_read+0x103/0x440
[   28.310009]  [<ffffffff8151cec0>] ? vfs_iter_write+0x2d0/0x2d0
[   28.315953]  [<ffffffff815e981d>] ? fsnotify+0x5ad/0xee0
[   28.321371]  [<ffffffff815ea150>] ? fsnotify+0xee0/0xee0
[   28.326790]  [<ffffffff81b4cfb9>] ? avc_policy_seqno+0x9/0x20
[   28.332644]  [<ffffffff81b5e688>] ? selinux_file_permission+0x348/0x460
[   28.339365]  [<ffffffff81b43eb9>] ? security_file_permission+0x89/0x1e0
[   28.346085]  [<ffffffff8151eb50>] ? rw_verify_area+0x100/0x2f0
[   28.352024]  [<ffffffff8151ee63>] vfs_read+0x123/0x3a0
[   28.357265]  [<ffffffff815217a9>] SyS_read+0xd9/0x1b0
[   28.362422]  [<ffffffff815216d0>] ? do_sendfile+0xd30/0xd30
[   28.368102]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   28.374566]  [<ffffffff837744df>] entry_SYSCALL_64_fastpath+0x1c/0x98
[   28.381112] Code: c6 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 
[   28.407706] RIP  [<ffffffff81434891>] __free_pages+0x21/0x90
[   28.413588]  RSP <ffff8800ad157ab0>
[   28.422204] ---[ end trace d87d97dde19a9b4a ]---
[   28.426967] Kernel panic - not syncing: Fatal exception
[   28.432781] Dumping ftrace buffer:
[   28.436291]    (ftrace buffer empty)
[   28.439972] Kernel Offset: disabled
[   28.443566] Rebooting in 86400 seconds..