FYI, we noticed the below changes on

commit 1ad83c858c7d4ea210429142c99a1548e6715a35 ("x86_64,vsyscall: Make vsyscall emulation configurable")


+-----------------------------------------------------------+------------+------------+
|                                                           | 95c46b5692 | 1ad83c858c |
+-----------------------------------------------------------+------------+------------+
| boot_successes                                            | 20         | 1          |
| early-boot-hang                                           | 1          |            |
| boot_failures                                             | 0          | 9          |
| Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 0          | 9          |
+-----------------------------------------------------------+------------+------------+


bootlogd.
[   18.959051] init[1]: segfault at ffffffffff600400 ip ffffffffff600400 sp 00007fffa5199598 error 15
[   18.960174] init[1]: segfault at ffffffffff600400 ip ffffffffff600400 sp 00007fffa5198a78 error 15
[   18.961242] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[   18.961242] 
[   18.962183] CPU: 0 PID: 1 Comm: init Not tainted 3.18.0-g5fbea33 #102
[   18.962834] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.963339]  0000000000000001 ffff88001146fc38 ffffffff820e3f19 0000000000000001
[   18.963339]  ffffffff82a10f58 ffff88001146fcb8 ffffffff820df795 ffffffff8116cf66
[   18.963339]  0000000000000010 ffff88001146fcc8 ffff88001146fc68 ffff88001146fc98
[   18.963339] Call Trace:
[   18.963339]  [<ffffffff820e3f19>] dump_stack+0x7c/0xa9
[   18.963339]  [<ffffffff820df795>] panic+0x107/0x2b3
[   18.963339]  [<ffffffff8116cf66>] ? do_exit+0xd86/0x1100
[   18.963339]  [<ffffffff8116d278>] do_exit+0x1098/0x1100
[   18.963339]  [<ffffffff81176bf2>] ? __sigqueue_free+0x52/0x60
[   18.963339]  [<ffffffff8116d3cf>] do_group_exit+0x7f/0x140
[   18.963339]  [<ffffffff8117ce35>] get_signal+0xb85/0xd00
[   18.963339]  [<ffffffff811ae619>] ? sched_clock_cpu+0x159/0x190
[   18.963339]  [<ffffffff81072654>] do_signal+0x24/0x1b0
[   18.963339]  [<ffffffff811dc678>] ? do_raw_spin_unlock+0xf8/0x150
[   18.963339]  [<ffffffff811e0000>] ? state_store+0xe0/0x120
[   18.963339]  [<ffffffff820dfc79>] ? printk+0x4d/0x56
[   18.963339]  [<ffffffff811af6e1>] ? vtime_account_user+0x91/0xa0
[   18.963339]  [<ffffffff812ac5ce>] ? context_tracking_user_exit+0x13e/0x200
[   18.963339]  [<ffffffff81072998>] do_notify_resume+0x1b8/0x200
[   18.963339]  [<ffffffff821080bc>] retint_signal+0x48/0x8c
[   18.963339] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)

Elapsed time: 25

Thanks,
Huang, Ying