[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   16.653832] 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: [   21.173428] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   21.469842] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available)
[   22.297852] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available)
[   22.479128] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available)
Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts.
[   27.875982] random: sshd: uninitialized urandom read (32 bytes read, 118 bits of entropy available)
executing program
executing program
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executing program
[   27.981479] IPVS: Creating netns size=2552 id=1
executing program
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executing program
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executing program
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executing program
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executing program
[   28.142752] kasan: CONFIG_KASAN_INLINE enabled
[   28.147191] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   28.159984] Dumping ftrace buffer:
[   28.163489]    (ftrace buffer empty)
[   28.167165] Modules linked in:
[   28.170435] CPU: 1 PID: 3322 Comm: syzkaller422787 Not tainted 4.4.107-g610c835 #12
[   28.178192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.187516] task: ffff8800b49aaf80 task.stack: ffff8801d04e8000
[   28.193537] RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90
[   28.201777] RSP: 0018:ffff8801d04efb00  EFLAGS: 00010a07
[   28.207190] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
[   28.214427] RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
[   28.221662] RBP: ffff8801d04efb10 R08: 0000000000000000 R09: 0000000000000001
[   28.228899] R10: 0000000000000000 R11: 1ffff1003a09df3e R12: 0000000000000004
[   28.236134] R13: 0000000000000020 R14: ffff8801d0df0000 R15: dffffc0000000000
[   28.243372] FS:  00007fafcd9bd700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   28.251564] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.257410] CR2: 0000000020671000 CR3: 00000000b5f4b000 CR4: 00000000001406e0
[   28.264648] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.271891] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.279126] Stack:
[   28.281239]  0000000000000246 ffff8801d0df0158 ffff8801d04efb70 ffffffff825b8cf1
[   28.289188]  ffff8801d0df0170 ffffed003a1be02b ffffed003a1be02e ffff8801d0df0168
[   28.297141]  dead4ead00000000 ffff8801d0df0140 0000000000000000 0000000000000000
[   28.305092] Call Trace:
[   28.307647]  [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   28.314105]  [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340
[   28.320128]  [<ffffffff825baed1>] sg_read+0xa21/0x1490
[   28.325372]  [<ffffffff812dda43>] ? do_futex+0x3e3/0x1670
[   28.330874]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.337508]  [<ffffffff81234260>] ? debug_check_no_locks_freed+0x2c0/0x2c0
[   28.344485]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.351117]  [<ffffffff8151aa73>] __vfs_read+0x103/0x440
[   28.356532]  [<ffffffff815773c2>] ? __fget+0x232/0x3b0
[   28.361773]  [<ffffffff8151a970>] ? vfs_iter_write+0x2d0/0x2d0
[   28.367711]  [<ffffffff815e878d>] ? fsnotify+0x5ad/0xee0
[   28.373126]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   28.378552]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   28.384406]  [<ffffffff81b5ebe8>] ? selinux_file_permission+0x348/0x460
[   28.391122]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   28.397841]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   28.403777]  [<ffffffff8151c913>] vfs_read+0x123/0x3a0
[   28.409017]  [<ffffffff8151f259>] SyS_read+0xd9/0x1b0
[   28.414180]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   28.419859]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   28.426318]  [<ffffffff83773d36>] entry_SYSCALL_64_fastpath+0x16/0x76
executing program
executing program
[   28.432859] Code: 76 ae 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 
[   28.459319] RIP  [<ffffffff81431331>] __free_pages+0x21/0x90
[   28.465197]  RSP <ffff8801d04efb00>
[   28.473857] ---[ end trace e8c885ed5a1b094a ]---
[   28.478924] Kernel panic - not syncing: Fatal exception
[   28.484692] Dumping ftrace buffer:
[   28.488203]    (ftrace buffer empty)
[   28.491878] Kernel Offset: disabled
[   28.495469] Rebooting in 86400 seconds..