[   16.575791] 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: [   20.998361] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.382782] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   22.170880] random: sshd: uninitialized urandom read (32 bytes read, 90 bits of entropy available)
[   22.342035] random: sshd: uninitialized urandom read (32 bytes read, 95 bits of entropy available)
Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts.
[   27.728878] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available)
executing program
[   27.832031] sg_write: data in/out 29964/54 bytes for SCSI command 0x10-- guessing data in;
[   27.832031]    program syzkaller148411 not setting count and/or reply_len properly
[   27.848658] kasan: CONFIG_KASAN_INLINE enabled
[   27.853075] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.865926] Dumping ftrace buffer:
[   27.869433]    (ftrace buffer empty)
[   27.873117] Modules linked in:
[   27.876392] CPU: 1 PID: 3322 Comm: syzkaller148411 Not tainted 4.4.107-g610c835 #4
[   27.884059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.893378] task: ffff8800b5da8000 task.stack: ffff8800b4860000
[   27.899398] RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90
[   27.907634] RSP: 0018:ffff8800b4867a40  EFLAGS: 00010a07
[   27.913045] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
[   27.920281] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   27.927517] RBP: ffff8800b4867a50 R08: 0000000000000001 R09: 0000000000000000
[   27.934751] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   27.941987] R13: 0000000000000020 R14: ffff8801d0df2100 R15: dffffc0000000000
[   27.949223] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008909840
[   27.957415] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   27.963259] CR2: 0000000020001000 CR3: 00000000b8197000 CR4: 00000000001406e0
[   27.970497] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.977733] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.984968] Stack:
[   27.987081]  0000000000000000 ffff8801d0df2258 ffff8800b4867ab0 ffffffff825b8cf1
[   27.995021]  ffff8801d0df2270 ffffed003a1be44b ffffed003a1be44e ffff8801d0df2268
[   28.002974]  dead4ead00000000 ffff8801d0df2240 0000000000000000 0000000000000000
[   28.010917] Call Trace:
[   28.013484]  [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   28.019972]  [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340
[   28.025997]  [<ffffffff825b9179>] sg_new_read.isra.18+0x39/0x3c0
[   28.032119]  [<ffffffff825b7472>] ? sg_get_rq_mark+0x142/0x190
[   28.038064]  [<ffffffff825bad72>] sg_read+0x8c2/0x1490
[   28.043307]  [<ffffffff81435020>] ? __alloc_pages_direct_compact+0x250/0x250
[   28.050458]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.057096]  [<ffffffff8122cf91>] ? __lock_is_held+0xa1/0xf0
[   28.062859]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.069497]  [<ffffffff8151aa73>] __vfs_read+0x103/0x440
[   28.074921]  [<ffffffff8151a970>] ? vfs_iter_write+0x2d0/0x2d0
[   28.080865]  [<ffffffff815e878d>] ? fsnotify+0x5ad/0xee0
[   28.086277]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   28.091692]  [<ffffffff8377322c>] ? _raw_spin_unlock+0x2c/0x50
[   28.097631]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   28.103479]  [<ffffffff81b5ebe8>] ? selinux_file_permission+0x348/0x460
[   28.110206]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   28.116920]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   28.122853]  [<ffffffff8151c913>] vfs_read+0x123/0x3a0
[   28.128092]  [<ffffffff8151f259>] SyS_read+0xd9/0x1b0
[   28.133243]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   28.138919]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   28.145112]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   28.150785]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   28.156894]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   28.162913] 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 
[   28.189193] RIP  [<ffffffff81431331>] __free_pages+0x21/0x90
[   28.195069]  RSP <ffff8800b4867a40>
[   28.198907] ---[ end trace b2a3dd065df5c60f ]---
[   28.203647] Kernel panic - not syncing: Fatal exception
[   28.209341] Dumping ftrace buffer:
[   28.212850]    (ftrace buffer empty)
[   28.216526] Kernel Offset: disabled
[   28.220117] Rebooting in 86400 seconds..