[   16.741270] 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: [   20.888180] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.268489] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   22.105266] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available)
[   22.279871] random: sshd: uninitialized urandom read (32 bytes read, 107 bits of entropy available)
Warning: Permanently added '10.128.15.219' (ECDSA) to the list of known hosts.
[   27.865463] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available)
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[   27.995724] kasan: CONFIG_KASAN_INLINE enabled
[   27.996836] kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.996855] Dumping ftrace buffer:
[   27.996860]    (ftrace buffer empty)
[   27.996862] Modules linked in:
[   27.996871] CPU: 1 PID: 3327 Comm: syzkaller029828 Not tainted 4.4.111-g3301b55 #17
[   27.996875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.996879] task: ffff8801d0c22f80 task.stack: ffff8801d0f08000
[   27.996882] RIP: 0010:[<ffffffff81433621>]  [<ffffffff81433621>] __free_pages+0x21/0x90
[   27.996900] RSP: 0018:ffff8801d0f0f970  EFLAGS: 00010a07
[   27.996903] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b9ebb
[   27.996907] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   27.996910] RBP: ffff8801d0f0f980 R08: 0000000000000001 R09: 0000000000000001
[   27.996914] R10: 0000000000000000 R11: 1ffff1003a1e1f0c R12: 0000000000000004
[   27.996917] R13: 0000000000000020 R14: ffff8801d7810000 R15: dffffc0000000000
[   27.996922] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009f0a900
[   27.996926] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   27.996929] CR2: 0000000020347000 CR3: 00000001d55a4000 CR4: 0000000000160670
[   27.996935] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.996939] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.996940] Stack:
[   27.996942]  0000000000000246 ffff8801d7810158 ffff8801d0f0f9e0 ffffffff825b9ee1
[   27.996950]  ffff8801d7810170 ffffed003af0202b ffffed003af0202e ffff8801d7810168
[   27.996958]  dead4ead00000000 ffff8801d7810140 0000000000000000 0000000000000000
[   27.996965] Call Trace:
[   27.996976]  [<ffffffff825b9ee1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   27.996983]  [<ffffffff825ba2a5>] sg_finish_rem_req+0x2b5/0x340
[   27.996990]  [<ffffffff825ba666>] sg_new_read.isra.18+0x336/0x3c0
[   27.996996]  [<ffffffff825bbf62>] sg_read+0x8c2/0x1490
[   27.997003]  [<ffffffff825bb6a0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.997010]  [<ffffffff815e9bb0>] ? fsnotify+0xee0/0xee0
[   27.997020]  [<ffffffff81b4dfe9>] ? avc_policy_seqno+0x9/0x20
[   27.997031]  [<ffffffff8151cc51>] do_loop_readv_writev+0x141/0x1e0
[   27.997037]  [<ffffffff81b44ed9>] ? security_file_permission+0x89/0x1e0
[   27.997044]  [<ffffffff825bb6a0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.997050]  [<ffffffff825bb6a0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.997057]  [<ffffffff8151f7ef>] compat_do_readv_writev+0x5df/0x6e0
[   27.997063]  [<ffffffff8151f210>] ? vfs_writev+0xb0/0xb0
[   27.997071]  [<ffffffff83774d5c>] ? _raw_spin_unlock+0x2c/0x50
[   27.997079]  [<ffffffff8149f8e2>] ? handle_mm_fault+0x3f2/0x3190
[   27.997085]  [<ffffffff8151df10>] ? rw_verify_area+0x100/0x2f0
[   27.997092]  [<ffffffff8151f9c9>] compat_readv+0xd9/0x140
[   27.997098]  [<ffffffff81521d58>] compat_SyS_readv+0xd8/0x1b0
[   27.997103]  [<ffffffff81521c80>] ? SyS_pwritev+0x230/0x230
[   27.997110]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   27.997116]  [<ffffffff81521c80>] ? SyS_pwritev+0x230/0x230
[   27.997121]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   27.997128]  [<ffffffff8377722a>] sysenter_flags_fixed+0xd/0x17
[   27.997130] Code: 96 a4 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 
[   27.997230] RIP  [<ffffffff81433621>] __free_pages+0x21/0x90
[   27.997237]  RSP <ffff8801d0f0f970>
[   27.997243] ---[ end trace 154eb398179992af ]---
[   27.997247] Kernel panic - not syncing: Fatal exception
[   28.000576] Dumping ftrace buffer:
[   28.000581]    (ftrace buffer empty)
[   28.000584] Kernel Offset: disabled
[   28.359497] Rebooting in 86400 seconds..