Re: vmlinux.o: warning: objtool: do_machine_check()+0x5dc: call to memset() leaves .noinstr.text section
From: Borislav Petkov
Date: Fri Aug 13 2021 - 13:24:13 EST
On Sat, Aug 14, 2021 at 01:00:21AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: f8e6dfc64f6135d1b6c5215c14cd30b9b60a0008
> commit: 7bb39313cd6239e7eb95198950a02b4ad2a08316 x86/mce: Make mce_timed_out() identify holdout CPUs
> date: 7 months ago
> config: x86_64-buildonly-randconfig-r001-20210812 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
> reproduce (this is a W=1 build):
> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bb39313cd6239e7eb95198950a02b4ad2a08316
> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> git fetch --no-tags linus master
> git checkout 7bb39313cd6239e7eb95198950a02b4ad2a08316
> # save the attached .config to linux build tree
> mkdir build_dir
> make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> All warnings (new ones prefixed by >>):
>
> >> vmlinux.o: warning: objtool: do_machine_check()+0x5dc: call to memset() leaves .noinstr.text section
I cannot trigger this particular warning with your config ontop of
latest tip/master so you can drop this.
--
Regards/Gruss,
Boris.
SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg