[   14.998423] random: sshd: uninitialized urandom read (32 bytes read, 32 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: [   20.024411] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   20.387012] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.352502] random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available)
[   21.528921] random: sshd: uninitialized urandom read (32 bytes read, 121 bits of entropy available)
Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts.
[   26.911720] random: sshd: uninitialized urandom read (32 bytes read, 128 bits of entropy available)
executing program
[   27.007935] kasan: CONFIG_KASAN_INLINE enabled
[   27.012557] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.025361] Dumping ftrace buffer:
[   27.028869]    (ftrace buffer empty)
[   27.032545] Modules linked in:
[   27.035822] CPU: 1 PID: 3306 Comm: syzkaller060899 Not tainted 4.4.113-gef588ef #33
[   27.043582] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.052902] task: ffff8801d1464740 task.stack: ffff8800b7ca0000
[   27.058923] RIP: 0010:[<ffffffff81433721>]  [<ffffffff81433721>] __free_pages+0x21/0x90
[   27.067148] RSP: 0018:ffff8800b7ca7ab0  EFLAGS: 00010a07
[   27.072561] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b
[   27.079824] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   27.087060] RBP: ffff8800b7ca7ac0 R08: 0000000000000001 R09: 0000000000000001
[   27.094297] R10: 0000000000000000 R11: 1ffff10016f94f34 R12: 0000000000000004
[   27.101541] R13: 0000000000000020 R14: ffff8800b1004200 R15: dffffc0000000000
[   27.108779] FS:  0000000001182880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   27.116970] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.122822] CR2: 00000000205c6000 CR3: 00000000b505e000 CR4: 0000000000160670
[   27.130069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.137305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.144539] Stack:
[   27.146656]  ffffffff83772769 ffff8800b1004358 ffff8800b7ca7b20 ffffffff825b6f51
[   27.154619]  ffff8800b1004370 ffffed001620086b ffffed001620086e ffff8800b1004368
[   27.162575]  dead4ead00000000 ffff8800b1004340 0000000000000000 0000000000000000
[   27.170536] Call Trace:
[   27.173093]  [<ffffffff83772769>] ? retint_kernel+0x2d/0x2d
[   27.178775]  [<ffffffff825b6f51>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   27.185232]  [<ffffffff825b7315>] sg_finish_rem_req+0x2b5/0x340
[   27.191255]  [<ffffffff825b76d6>] sg_new_read.isra.18+0x336/0x3c0
[   27.197453]  [<ffffffff825b903c>] sg_read+0x8bc/0x1490
[   27.202698]  [<ffffffff825b8780>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   27.209330]  [<ffffffff825b8780>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   27.215967]  [<ffffffff8151bc93>] __vfs_read+0x103/0x440
[   27.221387]  [<ffffffff8151bb90>] ? vfs_iter_write+0x2d0/0x2d0
[   27.227325]  [<ffffffff815e829d>] ? fsnotify+0x5ad/0xee0
[   27.232741]  [<ffffffff815e8bd0>] ? fsnotify+0xee0/0xee0
[   27.238160]  [<ffffffff8377101c>] ? _raw_spin_unlock+0x2c/0x50
[   27.244098]  [<ffffffff81b4b9c9>] ? avc_policy_seqno+0x9/0x20
[   27.249950]  [<ffffffff81b5d098>] ? selinux_file_permission+0x348/0x460
[   27.256674]  [<ffffffff81b428c9>] ? security_file_permission+0x89/0x1e0
[   27.263392]  [<ffffffff8151d820>] ? rw_verify_area+0x100/0x2f0
[   27.269329]  [<ffffffff8151db33>] vfs_read+0x123/0x3a0
[   27.274574]  [<ffffffff81520479>] SyS_read+0xd9/0x1b0
[   27.279728]  [<ffffffff815203a0>] ? do_sendfile+0xd30/0xd30
[   27.285405]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   27.291863]  [<ffffffff83771b5f>] entry_SYSCALL_64_fastpath+0x1c/0x98
[   27.298407] 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 
[   27.324908] RIP  [<ffffffff81433721>] __free_pages+0x21/0x90
[   27.330789]  RSP <ffff8800b7ca7ab0>
[   27.334504] ---[ end trace b58e98a4e43cba61 ]---
[   27.339233] Kernel panic - not syncing: Fatal exception
[   27.344914] Dumping ftrace buffer:
[   27.348424]    (ftrace buffer empty)
[   27.352105] Kernel Offset: disabled
[   27.355705] Rebooting in 86400 seconds..