Bug 2273 - [Anck 5.10 x86_64][nightly]内核启动参数中同时设置mitigations=off pti=off，grub2-mkconfig同步内核配置，报错/usr/bin/grub2-editenv: error: environment block too small
Summary: [Anck 5.10 x86_64][nightly]内核启动参数中同时设置mitigations=off pti=off，grub2-mkconfig同...
Status: NEW
Alias: None
Product: Anolis OS 8
Classification: Anolis OS
Component: Others (show other bugs) Others
Version: 8.6
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: Jacob
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-09-26 11:36 UTC by shanxifanshi
Modified: 2022-09-26 11:36 UTC (History)
10 users (show)

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Description shanxifanshi alibaba_cloud_group 2022-09-26 11:36:03 UTC 
[缺陷描述]：
内核启动参数中同时设置mitigations=off pti=off，grub2-mkconfig同步内核配置，报错/usr/bin/grub2-editenv: error: environment block too small，alinux3无此问题

测试日志：
# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="console=tty0 crashkernel=0M-2G:0M,2G-8G:192M,8G-:256M console=ttyS1,115200 mitigations=off pti=off"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true

# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
/usr/bin/grub2-editenv: error: environment block too small.

内核信息：
# uname -r
5.10.134-418.git.2d708798d.an8.x86_64

操作系统信息：
# cat /etc/os-release
NAME="Anolis OS"
VERSION="8.6"
ID="anolis"
ID_LIKE="rhel fedora centos"
VERSION_ID="8.6"
PLATFORM_ID="platform:an8"
PRETTY_NAME="Anolis OS 8.6"
ANSI_COLOR="0;31"
HOME_URL="https://openanolis.cn/"

cpu信息：
# lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              24
On-line CPU(s) list: 0-23
Thread(s) per core:  2
Core(s) per socket:  12
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
BIOS Vendor ID:      Intel
CPU family:          6
Model:               63
Model name:          Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
BIOS Model name:     Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
Stepping:            2
CPU MHz:             1919.918
CPU max MHz:         2500.0000
CPU min MHz:         1200.0000
BogoMIPS:            4988.77
Virtualization:      VT-x
L1d cache:           32K
L1i cache:           32K
L2 cache:            256K
L3 cache:            30720K
NUMA node0 CPU(s):   0-23
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault epb invpcid_single intel_ppin ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc cqm_occup_llc dtherm arat pln pts md_clear flush_l1d

[发生概率]：必现

[复现步骤]：	
1. 修改/etc/default/grub配置mitigations=off pti=off
   
2. 将内核参数写到grub文件中
   grub2-mkconfig -o /boot/grub2/grub.cfg

[期望结果]：
预期写入成功

[实际结果]：
写入时报错/usr/bin/grub2-editenv: error: environment block too small