0000229: Anolis 8.2/4 dmesg报错：Spectre V2 : Using retpoline on Skylake-generation processors may not fully mitigate the vulnerability.

编号	项目	分类	查看权限	报告日期	最后更新

0000229	Anolis OS 8	kernel	public	2021-08-24 17:03	2021-09-07 10:53

报告员	anolis_account	分派给	Shiloong
优先级	normal	严重性	minor	出现频率	always
状态	assigned	处理状况	open
平台	x86_64	操作系统	Anolis OS	操作系统版本	8

标题	0000229: Anolis 8.2/4 dmesg报错：Spectre V2 : Using retpoline on Skylake-generation processors may not fully mitigate the vulnerability.
描述	dmesg 检查发现报错信息涉及镜像 Anolis 8.2 x86_64 rhck Anolis 8.4 x86_64 rhck # dmesg -l warn -T [Tue Aug 24 13:55:46 2021] Spectre V2 : Using retpoline on Skylake-generation processors may not fully mitigate the vulnerability. [Tue Aug 24 13:55:46 2021] Spectre V2 : Add the "spectre_v2=ibrs" kernel boot flag to enable IBRS on Skylake systems that need full mitigation. Anolis 8.2 x86_64 rhck # uname -a Linux iZbp14edr7x0pa3evcvsnxZ 4.18.0-193.el8.x86_64 #1 SMP Wed Jan 27 06:47:29 CST 2021 x86_64 x86_64 x86_64 GNU/Linux Anolis 8.4 x86_64 rhck # uname -a Linux iZbp1382hkrkc458sqbby6Z 4.18.0-305.an8.x86_64 #1 SMP Sun Jun 20 14:13:18 CST 2021 x86_64 x86_64 x86_64 GNU/Linux
问题重现步骤	重启机器，查看dmesg信息 dmesg -l warn -T
标签	没加标签.

Shiloong 2021-09-06 10:55 开发人员 ~0000374	这个问题只有 RHCK 有吗? 那不影响 ANCK 发布. 也是 Intel CPU 漏洞的 warning 提示, 影响不大. 也请 @富邻一起看看, 评估一下吧.

yinyongchen 2021-09-07 10:53 报告者 ~0000378	Anolis 8.2 QU1 镜像安装rhck内核的虚拟机后，有相同问题，anck无此问题： # dmesg -l warn -T [Tue Sep 7 02:51:48 2021] Spectre V2 : Using retpoline on Skylake-generation processors may not fully mitigate the vulnerability. [Tue Sep 7 02:51:48 2021] Spectre V2 : Add the "spectre_v2=ibrs" kernel boot flag to enable IBRS on Skylake systems that need full mitigation.