[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   16.357548] 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: [   18.081909] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available)
[   18.338824] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available)
[   19.029671] random: sshd: uninitialized urandom read (32 bytes read, 73 bits of entropy available)
[   19.195077] random: sshd: uninitialized urandom read (32 bytes read, 77 bits of entropy available)
Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts.
[   24.588562] random: sshd: uninitialized urandom read (32 bytes read, 85 bits of entropy available)
executing program
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[   24.689215] sg_write: data in/out 335544540/1 bytes for SCSI command 0x2c-- guessing data in;
[   24.689215]    program syzkaller998071 not setting count and/or reply_len properly
[   24.696049] sg_write: data in/out 335544540/1 bytes for SCSI command 0x2c-- guessing data in;
[   24.696049]    program syzkaller998071 not setting count and/or reply_len properly
executing program
[   24.725421] kasan: CONFIG_KASAN_INLINE enabled
[   24.740646] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   24.755771] Dumping ftrace buffer:
[   24.759282]    (ftrace buffer empty)
[   24.762961] Modules linked in:
[   24.766232] CPU: 0 PID: 3326 Comm: syzkaller998071 Not tainted 4.4.107-g610c835 #4
[   24.773901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   24.783220] task: ffff8801d1cfaf80 task.stack: ffff8801d14b0000
[   24.789239] RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90
[   24.797469] RSP: 0018:ffff8801d14b79c0  EFLAGS: 00010a07
[   24.802881] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
[   24.810115] RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
[   24.817349] RBP: ffff8801d14b79d0 R08: ffffed003a2ba300 R09: 0000000000000000
[   24.824588] R10: fffbc79c00000000 R11: ffffed003a2ba300 R12: 0000000000000004
[   24.831823] R13: 0000000000000020 R14: ffff8801d557c200 R15: dffffc0000000000
[   24.839060] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f76f2b40
[   24.847250] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   24.853095] CR2: 00000000204d7fa0 CR3: 00000000b4930000 CR4: 00000000001406f0
[   24.860332] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.867566] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.874802] Stack:
[   24.876914]  0000000000000000 ffff8801d557c358 ffff8801d14b7a30 ffffffff825b8cf1
[   24.884868]  ffff8801d557c370 ffffed003aaaf86b ffffed003aaaf86e ffff8801d557c368
[   24.892815]  dead4ead00000000 ffff8801d557c340 0000000000000000 0000000000000000
[   24.900760] Call Trace:
[   24.903315]  [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   24.909771]  [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340
[   24.915793]  [<ffffffff825baed1>] sg_read+0xa21/0x1490
[   24.921035]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   24.927666]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   24.933085]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   24.938936]  [<ffffffff8151b341>] do_loop_readv_writev+0x141/0x1e0
[   24.945219]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   24.951935]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   24.958565]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   24.965197]  [<ffffffff8151dedf>] compat_do_readv_writev+0x5df/0x6e0
[   24.971656]  [<ffffffff8151d900>] ? vfs_writev+0xb0/0xb0
[   24.977071]  [<ffffffff815773c2>] ? __fget+0x232/0x3b0
[   24.982311]  [<ffffffff815771d7>] ? __fget+0x47/0x3b0
[   24.987466]  [<ffffffff8151e0b9>] compat_readv+0xd9/0x140
[   24.992968]  [<ffffffff81520448>] compat_SyS_readv+0xd8/0x1b0
[   24.998815]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   25.004492]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   25.010690]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   25.016366]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   25.022478]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
executing program
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[   25.028500] 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 
[   25.054861] RIP  [<ffffffff81431331>] __free_pages+0x21/0x90
[   25.060742]  RSP <ffff8801d14b79c0>
[   25.075179] ---[ end trace ba60b84ff7c52715 ]---
[   25.082430] Kernel panic - not syncing: Fatal exception
[   25.088224] Dumping ftrace buffer:
[   25.091730]    (ftrace buffer empty)
[   25.095406] Kernel Offset: disabled
[   25.098997] Rebooting in 86400 seconds..