From: Alexander Lobakin <alobakin@pm.me>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Arnd Bergmann <arnd@arndb.de>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Sami Tolvanen <samitolvanen@google.com>,
Huacai Chen <chenhuacai@kernel.org>,
Pei Huang <huangpei@loongson.cn>,
Kees Cook <keescook@chromium.org>,
Alexander Lobakin <alobakin@pm.me>,
Fangrui Song <maskray@google.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Corey Minyard <cminyard@mvista.com>,
kernel test robot <lkp@intel.com>,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org
Subject: Re: [PATCH mips-fixes] vmlinux.lds.h: catch even more instrumentation symbols into .data
Date: Tue, 23 Feb 2021 11:36:41 +0000 [thread overview]
Message-ID: <20210223113600.7009-2-alobakin@pm.me> (raw)
In-Reply-To: <20210223113600.7009-1-alobakin@pm.me>
> LKP caught another bunch of orphaned instrumentation symbols [0]:
>
> mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from
> `init/main.o' being placed in section `.data.$LPBX1'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from
> `init/main.o' being placed in section `.data.$LPBX0'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from
> `init/do_mounts.o' being placed in section `.data.$LPBX1'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from
> `init/do_mounts.o' being placed in section `.data.$LPBX0'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from
> `init/do_mounts_initrd.o' being placed in section `.data.$LPBX1'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from
> `init/do_mounts_initrd.o' being placed in section `.data.$LPBX0'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from
> `init/initramfs.o' being placed in section `.data.$LPBX1'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from
> `init/initramfs.o' being placed in section `.data.$LPBX0'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from
> `init/calibrate.o' being placed in section `.data.$LPBX1'
> mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from
> `init/calibrate.o' being placed in section `.data.$LPBX0'
>
> [...]
>
> Soften the wildcard to .data.$L* to grab these ones into .data too.
>
> [0] https://lore.kernel.org/lkml/202102231519.lWPLPveV-lkp@intel.com
>
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Alexander Lobakin <alobakin@pm.me>
> ---
> include/asm-generic/vmlinux.lds.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Hi Thomas,
This applies on top of mips-next or Linus' tree, so you may need to
rebase mips-fixes before taking it.
It's not for mips-next as it should go into this cycle as a [hot]fix.
I haven't added any "Fixes:" tag since these warnings is a result
of merging several sets and of certain build configurations that
almost couldn't be tested separately.
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index 01a3fd6a64d2..c887ac36c1b4 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -95,7 +95,7 @@
> */
> #ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
> #define TEXT_MAIN .text .text.[0-9a-zA-Z_]*
> -#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..L* .data..compoundliteral* .data.$__unnamed_* .data.$Lubsan_*
> +#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..L* .data..compoundliteral* .data.$__unnamed_* .data.$L*
> #define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]*
> #define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]* .rodata..L*
> #define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* .bss..compoundliteral*
> --
> 2.30.1
Thanks,
Al
next prev parent reply other threads:[~2021-02-23 11:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-23 11:36 [PATCH mips-fixes] vmlinux.lds.h: catch even more instrumentation symbols into .data Alexander Lobakin
2021-02-23 11:36 ` Alexander Lobakin [this message]
2021-02-23 12:21 ` Thomas Bogendoerfer
2021-02-23 13:13 ` Alexander Lobakin
2021-02-23 12:26 ` Thomas Bogendoerfer
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