[   15.122979] 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: [   21.042086] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.388758] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   22.140688] random: sshd: uninitialized urandom read (32 bytes read, 86 bits of entropy available)
[   31.877191] random: sshd: uninitialized urandom read (32 bytes read, 98 bits of entropy available)
Warning: Permanently added '10.128.15.199' (ECDSA) to the list of known hosts.
[   37.250032] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available)
executing program
[   37.347533] sg_write: data in/out 29964/54 bytes for SCSI command 0x10-- guessing data in;
[   37.347533]    program syzkaller641912 not setting count and/or reply_len properly
[   37.364208] kasan: CONFIG_KASAN_INLINE enabled
[   37.368608] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   37.381423] Dumping ftrace buffer:
[   37.384926]    (ftrace buffer empty)
[   37.388602] Modules linked in:
[   37.391870] CPU: 0 PID: 3328 Comm: syzkaller641912 Not tainted 4.4.107-g610c835 #4
[   37.399539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   37.408857] task: ffff8800b51fc740 task.stack: ffff8801d0678000
[   37.414875] RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90
[   37.423102] RSP: 0018:ffff8801d067fa40  EFLAGS: 00010a07
[   37.428513] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
[   37.435749] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   37.443249] RBP: ffff8801d067fa50 R08: 0000000000000001 R09: 0000000000000000
[   37.450882] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   37.458119] R13: 0000000000000020 R14: ffff8800b5f92100 R15: dffffc0000000000
[   37.465354] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000848c840
[   37.473543] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   37.479393] CR2: 0000000020001000 CR3: 00000000b50fa000 CR4: 00000000001406f0
[   37.486635] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   37.493870] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   37.501103] Stack:
[   37.503215]  0000000000000000 ffff8800b5f92258 ffff8801d067fab0 ffffffff825b8cf1
[   37.511160]  ffff8800b5f92270 ffffed0016bf244b ffffed0016bf244e ffff8800b5f92268
[   37.519103]  dead4ead00000000 ffff8800b5f92240 0000000000000000 0000000000000000
[   37.527041] Call Trace:
[   37.529596]  [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   37.536055]  [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340
[   37.542080]  [<ffffffff825b9179>] sg_new_read.isra.18+0x39/0x3c0
[   37.548188]  [<ffffffff825b7472>] ? sg_get_rq_mark+0x142/0x190
[   37.554137]  [<ffffffff825bad72>] sg_read+0x8c2/0x1490
[   37.559377]  [<ffffffff81435020>] ? __alloc_pages_direct_compact+0x250/0x250
[   37.566527]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   37.573157]  [<ffffffff8122cf91>] ? __lock_is_held+0xa1/0xf0
[   37.578915]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   37.585544]  [<ffffffff8151aa73>] __vfs_read+0x103/0x440
[   37.590957]  [<ffffffff8151a970>] ? vfs_iter_write+0x2d0/0x2d0
[   37.596889]  [<ffffffff815e878d>] ? fsnotify+0x5ad/0xee0
[   37.602301]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   37.607722]  [<ffffffff8377322c>] ? _raw_spin_unlock+0x2c/0x50
[   37.613660]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   37.619514]  [<ffffffff81b5ebe8>] ? selinux_file_permission+0x348/0x460
[   37.626230]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   37.632954]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   37.638887]  [<ffffffff8151c913>] vfs_read+0x123/0x3a0
[   37.644130]  [<ffffffff8151f259>] SyS_read+0xd9/0x1b0
[   37.649282]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   37.654954]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   37.661157]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   37.666829]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   37.672937]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   37.678955] 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 
[   37.705271] RIP  [<ffffffff81431331>] __free_pages+0x21/0x90
[   37.711142]  RSP <ffff8801d067fa40>
[   37.714938] ---[ end trace f61a86a3c8afef63 ]---
[   37.719661] Kernel panic - not syncing: Fatal exception
[   37.725759] Dumping ftrace buffer:
[   37.729264]    (ftrace buffer empty)
[   37.732939] Kernel Offset: disabled
[   37.736538] Rebooting in 86400 seconds..