[   16.700939] 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: [   20.109470] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available)
[   20.382381] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available)
[   21.202223] random: sshd: uninitialized urandom read (32 bytes read, 92 bits of entropy available)
[   21.617878] random: sshd: uninitialized urandom read (32 bytes read, 97 bits of entropy available)
Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts.
[   27.223065] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available)
net.ipv6.conf.syz2.accept_dad = 0
net.ipv6.conf.syz2.router_solicitations = 0
[   27.337567] IPVS: Creating netns size=2552 id=1
net.ipv6.conf.syz5.accept_dad = 0
[   27.386087] IPVS: Creating netns size=2552 id=2
net.ipv6.conf.syz5.router_solicitations = 0
[   27.432146] IPVS: Creating netns size=2552 id=3
executing program
net.ipv6.conf.syz0.accept_dad = 0
[   27.486311] IPVS: Creating netns size=2552 id=4
net.ipv6.conf.syz0.router_solicitations = 0
executing program
executing program
executing program
[   27.508693] sg_write: data in/out 2083837667/98 bytes for SCSI command 0x8d-- guessing data in;
[   27.508693]    program syzkaller640310 not setting count and/or reply_len properly
[   27.530351] kasan: CONFIG_KASAN_INLINE enabled
executing program
[   27.534766] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.572860] Dumping ftrace buffer:
[   27.576369]    (ftrace buffer empty)
[   27.580141] Modules linked in:
[   27.583418] CPU: 0 PID: 3371 Comm: syzkaller640310 Not tainted 4.4.107-g610c835 #12
[   27.591188] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.600511] task: ffff8801d38fdf00 task.stack: ffff8800b5630000
[   27.606531] RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90
[   27.614761] RSP: 0018:ffff8800b5637b00  EFLAGS: 00010a07
[   27.620178] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
[   27.627416] RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
[   27.634665] RBP: ffff8800b5637b10 R08: ffffed00173ce500 R09: 0000000000000000
[   27.641903] R10: fffbd23200000000 R11: ffffed00173ce500 R12: 0000000000000004
[   27.649142] R13: 0000000000000020 R14: ffff8800b3d9c200 R15: dffffc0000000000
[   27.656381] FS:  00007fa006710700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   27.665212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.671061] CR2: 00007ffe9f77c99c CR3: 00000001d8c34000 CR4: 00000000001406f0
[   27.678298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.685536] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.692774] Stack:
[   27.694890]  0000000000000000 ffff8800b3d9c358 ffff8800b5637b70 ffffffff825b8cf1
[   27.702847]  ffff8800b3d9c370 ffffed00167b386b ffffed00167b386e ffff8800b3d9c368
[   27.710814]  dead4ead00000000 ffff8800b3d9c340 0000000000000000 0000000000000000
[   27.718861] Call Trace:
[   27.721427]  [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   27.727888]  [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340
[   27.733914]  [<ffffffff825baed1>] sg_read+0xa21/0x1490
[   27.739159]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.745793]  [<ffffffff81234260>] ? debug_check_no_locks_freed+0x2c0/0x2c0
[   27.752774]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.759409]  [<ffffffff8151aa73>] __vfs_read+0x103/0x440
[   27.764825]  [<ffffffff8151a970>] ? vfs_iter_write+0x2d0/0x2d0
[   27.770762]  [<ffffffff815e878d>] ? fsnotify+0x5ad/0xee0
[   27.776181]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   27.781599]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   27.787451]  [<ffffffff81b5ebe8>] ? selinux_file_permission+0x348/0x460
[   27.794168]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   27.800887]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   27.806827]  [<ffffffff8151c913>] vfs_read+0x123/0x3a0
[   27.812072]  [<ffffffff8151f259>] SyS_read+0xd9/0x1b0
[   27.817228]  [<ffffffff8151f180>] ? do_sendfile+0xd30/0xd30
[   27.822916]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   27.829386]  [<ffffffff83773d36>] entry_SYSCALL_64_fastpath+0x16/0x76
[   27.835930] 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 
[   27.862421] RIP  [<ffffffff81431331>] __free_pages+0x21/0x90
net.ipv6.conf.syz3.accept_dad = 0
net.ipv6.conf.syz3.router_solicitations = 0
[   27.868300]  RSP <ffff8800b5637b00>
[   27.877830] IPVS: Creating netns size=2552 id=5
[   27.918564] ---[ end trace edfffb93a2a8e8e5 ]---
[   27.923668] Kernel panic - not syncing: Fatal exception
[   27.929414] Dumping ftrace buffer:
[   27.932928]    (ftrace buffer empty)
[   27.936604] Kernel Offset: disabled
[   27.940196] Rebooting in 86400 seconds..