[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   16.075084] 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: [   20.987863] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   21.427595] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   22.230282] random: sshd: uninitialized urandom read (32 bytes read, 90 bits of entropy available)
[   22.392485] random: sshd: uninitialized urandom read (32 bytes read, 94 bits of entropy available)
Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts.
[   27.773438] random: sshd: uninitialized urandom read (32 bytes read, 102 bits of entropy available)
executing program
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[   27.891110] IPVS: Creating netns size=2552 id=1
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[   27.937705] IPVS: Creating netns size=2552 id=2
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[   27.997825] IPVS: Creating netns size=2552 id=3
[   28.002128] kasan: CONFIG_KASAN_INLINE enabled
[   28.002136] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   28.002140] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   28.002145] Dumping ftrace buffer:
[   28.002147]    (ftrace buffer empty)
[   28.002151] Modules linked in:
[   28.002158] CPU: 0 PID: 3322 Comm: syzkaller042586 Not tainted 4.4.111-gf851888 #16
[   28.002161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.002165] task: ffff8801d26f4740 task.stack: ffff8800b4ac0000
[   28.002179] RIP: 0010:[<ffffffff81433621>]  [<ffffffff81433621>] __free_pages+0x21/0x90
[   28.002182] RSP: 0018:ffff8800b4ac7970  EFLAGS: 00010a07
[   28.002186] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b9e9b
[   28.002190] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c
[   28.002193] RBP: ffff8800b4ac7980 R08: 0000000000000001 R09: 0000000000000000
[   28.002196] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   28.002199] R13: 0000000000000020 R14: ffff8801d3f30000 R15: dffffc0000000000
[   28.002205] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000824c840
[   28.002208] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   28.002212] CR2: 0000000020bb7000 CR3: 00000000b19d8000 CR4: 0000000000160670
[   28.002217] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.002220] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.002221] Stack:
[   28.002229]  0000000000000000 ffff8801d3f30158 ffff8800b4ac79e0 ffffffff825b9ec1
[   28.002236]  ffff8801d3f30170 ffffed003a7e602b ffffed003a7e602e ffff8801d3f30168
[   28.002243]  dead4ead00000000 ffff8801d3f30140 0000000000000000 0000000000000000
[   28.002244] Call Trace:
[   28.002254]  [<ffffffff825b9ec1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   28.002260]  [<ffffffff825ba285>] sg_finish_rem_req+0x2b5/0x340
[   28.002267]  [<ffffffff825ba349>] sg_new_read.isra.18+0x39/0x3c0
[   28.002273]  [<ffffffff825b8642>] ? sg_get_rq_mark+0x142/0x190
[   28.002280]  [<ffffffff825bbf42>] sg_read+0x8c2/0x1490
[   28.002286]  [<ffffffff825bb680>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.002292]  [<ffffffff815e9bb0>] ? fsnotify+0xee0/0xee0
[   28.002303]  [<ffffffff81b4dfe9>] ? avc_policy_seqno+0x9/0x20
[   28.002311]  [<ffffffff8151cc51>] do_loop_readv_writev+0x141/0x1e0
[   28.002317]  [<ffffffff81b44ed9>] ? security_file_permission+0x89/0x1e0
[   28.002324]  [<ffffffff825bb680>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.002331]  [<ffffffff825bb680>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.002337]  [<ffffffff8151f7ef>] compat_do_readv_writev+0x5df/0x6e0
[   28.002344]  [<ffffffff8151f210>] ? vfs_writev+0xb0/0xb0
[   28.002351]  [<ffffffff83774d3c>] ? _raw_spin_unlock+0x2c/0x50
[   28.002359]  [<ffffffff8149f8e2>] ? handle_mm_fault+0x3f2/0x3190
[   28.002365]  [<ffffffff8151df10>] ? rw_verify_area+0x100/0x2f0
[   28.002372]  [<ffffffff8151f9c9>] compat_readv+0xd9/0x140
[   28.002377]  [<ffffffff81521d58>] compat_SyS_readv+0xd8/0x1b0
[   28.002382]  [<ffffffff81521c80>] ? SyS_pwritev+0x230/0x230
[   28.002389]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   28.002394]  [<ffffffff81521c80>] ? SyS_pwritev+0x230/0x230
[   28.002400]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   28.002406]  [<ffffffff837771ea>] sysenter_flags_fixed+0xd/0x17
[   28.002490] 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 
[   28.002497] RIP  [<ffffffff81433621>] __free_pages+0x21/0x90
[   28.002499]  RSP <ffff8800b4ac7970>
[   28.002504] ---[ end trace 5e592cc31bc8e50c ]---
[   28.002507] Kernel panic - not syncing: Fatal exception
[   28.002963] Dumping ftrace buffer:
[   28.002965]    (ftrace buffer empty)
[   28.002967] Kernel Offset: disabled
[   28.361109] Rebooting in 86400 seconds..