[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting O[   16.131662] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
penBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   21.079641] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   21.420989] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   22.352841] random: sshd: uninitialized urandom read (32 bytes read, 117 bits of entropy available)
[   22.516809] random: sshd: uninitialized urandom read (32 bytes read, 121 bits of entropy available)
Warning: Permanently added '10.128.15.221' (ECDSA) to the list of known hosts.
[   27.899378] random: sshd: uninitialized urandom read (32 bytes read, 128 bits of entropy available)
executing program
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[   28.011112] IPVS: Creating netns size=2552 id=1
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[   28.059199] IPVS: Creating netns size=2552 id=2
executing program
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[   28.106752] random: nonblocking pool is initialized
[   28.108628] kasan: CONFIG_KASAN_INLINE enabled
[   28.108636] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   28.108640] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   28.108644] Dumping ftrace buffer:
[   28.108648]    (ftrace buffer empty)
[   28.108651] Modules linked in:
[   28.108658] CPU: 1 PID: 3329 Comm: syzkaller047051 Not tainted 4.4.107-g610c835 #4
[   28.108661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.108665] task: ffff8800b40517c0 task.stack: ffff8800b7cf8000
[   28.108681] RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90
[   28.108685] RSP: 0018:ffff8800b7cff970  EFLAGS: 00010a07
[   28.108688] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
[   28.108692] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   28.108695] RBP: ffff8800b7cff980 R08: 0000000000000001 R09: 0000000000000000
[   28.108698] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   28.108702] R13: 0000000000000020 R14: ffff8801d00d2100 R15: dffffc0000000000
[   28.108707] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008aaa840
[   28.108711] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   28.108714] CR2: 0000000020a77fc0 CR3: 00000000b41f0000 CR4: 00000000001406e0
[   28.108720] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.108723] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.108724] Stack:
[   28.108732]  0000000000000000 ffff8801d00d2258 ffff8800b7cff9e0 ffffffff825b8cf1
[   28.108739]  ffff8801d00d2270 ffffed003a01a44b ffffed003a01a44e ffff8801d00d2268
[   28.108746]  dead4ead00000000 ffff8801d00d2240 0000000000000000 0000000000000000
[   28.108747] Call Trace:
[   28.108757]  [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0
[   28.108764]  [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340
[   28.108771]  [<ffffffff825b9179>] sg_new_read.isra.18+0x39/0x3c0
[   28.108777]  [<ffffffff825b7472>] ? sg_get_rq_mark+0x142/0x190
[   28.108783]  [<ffffffff825bad72>] sg_read+0x8c2/0x1490
[   28.108790]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.108796]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   28.108804]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   28.108813]  [<ffffffff8151b341>] do_loop_readv_writev+0x141/0x1e0
[   28.108819]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   28.108826]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.108832]  [<ffffffff825ba4b0>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   28.108839]  [<ffffffff8151dedf>] compat_do_readv_writev+0x5df/0x6e0
[   28.108845]  [<ffffffff8151d900>] ? vfs_writev+0xb0/0xb0
[   28.108852]  [<ffffffff8377322c>] ? _raw_spin_unlock+0x2c/0x50
[   28.108860]  [<ffffffff8149e232>] ? handle_mm_fault+0x3f2/0x3190
[   28.108866]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   28.108872]  [<ffffffff8151e0b9>] compat_readv+0xd9/0x140
[   28.108878]  [<ffffffff81520448>] compat_SyS_readv+0xd8/0x1b0
[   28.108883]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   28.108890]  [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890
[   28.108895]  [<ffffffff81520370>] ? SyS_pwritev+0x230/0x230
[   28.108901]  [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890
[   28.108907]  [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
[   28.108998] 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 
[   28.109004] RIP  [<ffffffff81431331>] __free_pages+0x21/0x90
[   28.109006]  RSP <ffff8800b7cff970>
[   28.109012] ---[ end trace 67b477d066b7974f ]---
[   28.109015] Kernel panic - not syncing: Fatal exception
[   28.459420] Dumping ftrace buffer:
[   28.462934]    (ftrace buffer empty)
[   28.466609] Kernel Offset: disabled
[   28.470201] Rebooting in 86400 seconds..