[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   17.506060] 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: [   20.209396] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   20.624091] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.695458] random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available)
[   21.862546] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available)
Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts.
[   27.235496] random: sshd: uninitialized urandom read (32 bytes read, 124 bits of entropy available)
executing program
[   27.335991] sg_write: data in/out 8454115/514 bytes for SCSI command 0x0-- guessing data in;
[   27.335991]    program syzkaller868912 not setting count and/or reply_len properly
[   27.353143] kasan: CONFIG_KASAN_INLINE enabled
[   27.357987] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.370859] Dumping ftrace buffer:
[   27.374368]    (ftrace buffer empty)
[   27.378049] Modules linked in:
[   27.381327] CPU: 0 PID: 3313 Comm: syzkaller868912 Not tainted 4.4.113-gef588ef #26
[   27.389090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.398419] task: ffff8801d19197c0 task.stack: ffff8800b69a0000
[   27.404455] RIP: 0010:[<ffffffff825b9497>]  [<ffffffff825b9497>] sg_read+0xd17/0x1490
[   27.412521] RSP: 0018:ffff8800b69a7a80  EFLAGS: 00010246
[   27.417949] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825b945e
[   27.425196] RDX: 0000000000000000 RSI: 0000000020f93fef RDI: ffff8800b4d42270
[   27.432434] RBP: ffff8800b69a7b88 R08: 0000000000000000 R09: 0000000000000001
[   27.439682] R10: 0000000000000000 R11: 1ffff10016d34f16 R12: 000000000000001a
[   27.446920] R13: 0000000000000000 R14: ffff8800b71ea300 R15: ffff8800b4d42240
[   27.454162] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000086eb840
[   27.462359] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   27.468213] CR2: 0000000020f93fcb CR3: 00000000b4ef0000 CR4: 0000000000160670
[   27.475458] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.482697] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.489936] Stack:
[   27.492052]  0000000000000002 0000000000000002 ffff8800b69a7c40 ffff8800b4d42258
[   27.500024]  00000000000008ff ffff8800b4d42268 000000000000003e 0000000020e24c26
[   27.507992]  ffff8801d57f3400 0000000000001000 1ffff10016d34f5c 0000000020f93fef
[   27.516490] Call Trace:
[   27.519663]  [<ffffffff825b8780>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   27.526737]  [<ffffffff815e8bd0>] ? fsnotify+0xee0/0xee0
[   27.532163]  [<ffffffff81b4b9c9>] ? avc_policy_seqno+0x9/0x20
[   27.538020]  [<ffffffff8151c561>] do_loop_readv_writev+0x141/0x1e0
[   27.544571]  [<ffffffff81b428c9>] ? security_file_permission+0x89/0x1e0
[   27.551297]  [<ffffffff825b8780>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   27.557933]  [<ffffffff825b8780>] ? sg_proc_seq_show_debug+0xda0/0xda0
[   27.564566]  [<ffffffff8151f0ff>] compat_do_readv_writev+0x5df/0x6e0
[   27.571023]  [<ffffffff8151eb20>] ? vfs_writev+0xb0/0xb0
[   27.576452]  [<ffffffff8377101c>] ? _raw_spin_unlock+0x2c/0x50
[   27.582402]  [<ffffffff8149f762>] ? handle_mm_fault+0x3f2/0x3190
[   27.588518]  [<ffffffff81b428c9>] ? security_file_permission+0x89/0x1e0
[   27.595239]  [<ffffffff8151d820>] ? rw_verify_area+0x100/0x2f0
[   27.601179]  [<ffffffff8151f2d9>] compat_readv+0xd9/0x140
[   27.606685]  [<ffffffff81521648>] compat_SyS_readv+0xd8/0x1b0
[   27.612536]  [<ffffffff81521570>] ? SyS_pwritev+0x230/0x230
[   27.618217]  [<ffffffff81006b37>] ? do_fast_syscall_32+0xd7/0x890
[   27.625467]  [<ffffffff81521570>] ? SyS_pwritev+0x230/0x230
[   27.631154]  [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890
[   27.637271]  [<ffffffff837734ea>] sysenter_flags_fixed+0xd/0x17
[   27.643296] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 97 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 6b 06 00 00 48 8b 1b 48 85 db 0f 84 3b 03 00 
[   27.669919] RIP  [<ffffffff825b9497>] sg_read+0xd17/0x1490
[   27.675640]  RSP <ffff8800b69a7a80>
[   27.680036] ---[ end trace bb4d5c443c702959 ]---
[   27.684830] Kernel panic - not syncing: Fatal exception
[   27.690704] Dumping ftrace buffer:
[   27.694216]    (ftrace buffer empty)
[   27.697896] Kernel Offset: disabled
[   27.701490] Rebooting in 86400 seconds..