From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Alexander Lobakin <alobakin@pm.me>
Cc: Arnd Bergmann <arnd@arndb.de>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Huacai Chen <chenhuacai@kernel.org>,
Pei Huang <huangpei@loongson.cn>,
Kees Cook <keescook@chromium.org>,
Sami Tolvanen <samitolvanen@google.com>,
Fangrui Song <maskray@google.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Ralf Baechle <ralf@linux-mips.org>,
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, clang-built-linux@googlegroups.com
Subject: Re: [PATCH mips-next] vmlinux.lds.h: catch more UBSAN symbols into .data
Date: Tue, 16 Feb 2021 18:10:27 +0100 [thread overview]
Message-ID: <20210216171027.GA9873@alpha.franken.de> (raw)
In-Reply-To: <20210216085442.2967-1-alobakin@pm.me>
On Tue, Feb 16, 2021 at 08:55:25AM +0000, Alexander Lobakin wrote:
> LKP triggered lots of LD orphan warnings [0]:
>
> mipsel-linux-ld: warning: orphan section `.data.$Lubsan_data299' from
> `init/do_mounts_rd.o' being placed in section `.data.$Lubsan_data299'
> mipsel-linux-ld: warning: orphan section `.data.$Lubsan_data183' from
> `init/do_mounts_rd.o' being placed in section `.data.$Lubsan_data183'
> mipsel-linux-ld: warning: orphan section `.data.$Lubsan_type3' from
> `init/do_mounts_rd.o' being placed in section `.data.$Lubsan_type3'
> mipsel-linux-ld: warning: orphan section `.data.$Lubsan_type2' from
> `init/do_mounts_rd.o' being placed in section `.data.$Lubsan_type2'
> mipsel-linux-ld: warning: orphan section `.data.$Lubsan_type0' from
> `init/do_mounts_rd.o' being placed in section `.data.$Lubsan_type0'
>
> [...]
>
> Seems like "unnamed data" isn't the only type of symbols that UBSAN
> instrumentation can emit.
> Catch these into .data with the wildcard as well.
>
> [0] https://lore.kernel.org/linux-mm/202102160741.k57GCNSR-lkp@intel.com
>
> Fixes: f41b233de0ae ("vmlinux.lds.h: catch UBSAN's "unnamed data" into data")
> 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(-)
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
next prev parent reply other threads:[~2021-02-16 19:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-16 8:55 [PATCH mips-next] vmlinux.lds.h: catch more UBSAN symbols into .data Alexander Lobakin
2021-02-16 17:10 ` Thomas Bogendoerfer [this message]
2021-02-16 17:56 ` Nick Desaulniers
2021-02-16 18:54 ` Nathan Chancellor
2021-02-16 19:03 ` Alexander Lobakin
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