From: matoro <matoro_mailinglist_kernel@matoro.tk>
To: Masahiro Yamada <masahiroy@kernel.org>
Cc: Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Nicolas Schier <nicolas@fjasle.eu>,
Peter Zijlstra <peterz@infradead.org>,
linux-modules <linux-modules@vger.kernel.org>,
clang-built-linux <llvm@lists.linux.dev>,
Ard Biesheuvel <ardb@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>
Subject: Re: [PATCH v6 00/10] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h)
Date: Mon, 08 Aug 2022 14:42:20 -0400 [thread overview]
Message-ID: <d4f30a7313f1ff43d0c919fc556f08fe@matoro.tk> (raw)
In-Reply-To: <CAK7LNATa1fdwQsuC3LOkzhr1SaR6ipJqe1b0fAC1pk3LX9wDhA@mail.gmail.com>
That patch doesn't apply to the v5.19 stable tag, so I just manually
edited and it worked perfect! Thank you!!
Sorry I didn't mention that warning - I did see it, but it still showed
up even on the old kernel, so I thought it was irrelevant. Much
appreciated!
-------- Original Message --------
Subject: Re: [PATCH v6 00/10] kbuild: yet another series of cleanups
(modpost, LTO, MODULE_REL_CRCS, export.h)
Date: 2022-08-08 13:36
From: Masahiro Yamada <masahiroy@kernel.org>
To: matoro <matoro_mailinglist_kernel@matoro.tk>
On Mon, Aug 8, 2022 at 10:27 PM matoro
<matoro_mailinglist_kernel@matoro.tk> wrote:
>
> I have real hardware for all these arches in my collection. I use it
> for testing the latest kernel and toolchains on as many of the
> less-popular arches as possible, exactly to find issues like this one
> :)
>
> Specifically we support all of these in Gentoo. To double-check this
> wasn't a config issue, I asked another user who also runs sparc to try
> building 5.19 with his config (not copying mine), and he observed the
> same problem. You can reach us in #gentoo-sparc on Libera.
>
> As for testing, I make all this hardware available on an as-needed
> basis. So if you can't or don't want to fiddle with qemu, just let me
> know (email or IRC, same username on Libera), and I will get you direct
> access to my hardware. Thanks!!
I found the root cause.
When I build the sparc kernel, I see a warning
WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation
failed, symbol will not be versioned.
Then, modpost missed to write out the entry.
With the following patch, you will be able to load the module.
I will send a patch with a proper commit log tomorrow. I need some sleep
now.
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 29474cee10b1..337bd36a890a 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2206,13 +2206,11 @@ static void add_exported_symbols(struct buffer
*buf, struct module *mod)
/* record CRCs for exported symbols */
buf_printf(buf, "\n");
list_for_each_entry(sym, &mod->exported_symbols, list) {
- if (!sym->crc_valid) {
+ if (!sym->crc_valid)
warn("EXPORT symbol \"%s\" [%s%s] version
generation failed, symbol will not be versioned.\n"
"Is \"%s\" prototyped in
<asm/asm-prototypes.h>?\n",
sym->name, mod->name, mod->is_vmlinux ? ""
: ".ko",
sym->name);
- continue;
- }
buf_printf(buf, "SYMBOL_CRC(%s, 0x%08x, \"%s\");\n",
sym->name, sym->crc, sym->is_gpl_only ?
"_gpl" : "");
next prev parent reply other threads:[~2022-08-08 18:43 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-13 11:39 [PATCH v6 00/10] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h) Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 01/10] modpost: extract symbol versions from *.cmd files Masahiro Yamada
2022-05-28 22:47 ` Guenter Roeck
2022-05-29 4:27 ` Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 02/10] kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS Masahiro Yamada
2022-08-20 10:02 ` Build/boot problem with 7b4537199a4a (Re: [PATCH v6 02/10] kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS) Christophe Leroy
2022-08-20 12:05 ` Sedat Dilek
2022-08-20 14:10 ` Christophe Leroy
2022-08-20 12:51 ` Masahiro Yamada
2022-08-20 14:15 ` Christophe Leroy
2022-08-20 17:01 ` Masahiro Yamada
2022-08-20 17:51 ` Christophe Leroy
2022-05-13 11:39 ` [PATCH v6 03/10] kbuild: stop merging *.symversions Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 04/10] genksyms: adjust the output format to modpost Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 05/10] kbuild: do not create *.prelink.o for Clang LTO or IBT Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 06/10] kbuild: check static EXPORT_SYMBOL* by script instead of modpost Masahiro Yamada
2022-05-25 8:31 ` Guenter Roeck
2022-05-25 10:51 ` Masahiro Yamada
2022-06-07 14:22 ` Jon Hunter
2022-06-07 14:25 ` Nathan Chancellor
2022-06-07 14:34 ` Jon Hunter
2022-05-13 11:39 ` [PATCH v6 07/10] kbuild: make built-in.a rule robust against too long argument error Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 08/10] kbuild: make *.mod " Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 09/10] kbuild: add cmd_and_savecmd macro Masahiro Yamada
2022-05-13 11:39 ` [PATCH v6 10/10] kbuild: rebuild multi-object modules when objtool is updated Masahiro Yamada
2022-05-13 12:20 ` [PATCH v6 00/10] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h) Masahiro Yamada
[not found] ` <CA+icZUUWww3fXvjQcefgFuq=tPO6+FYDbHE2E5PmL-BSJg4+cw@mail.gmail.com>
2022-05-22 6:49 ` Masahiro Yamada
2022-05-22 9:45 ` Sedat Dilek
2022-05-22 14:15 ` Sedat Dilek
2022-05-22 16:09 ` Masahiro Yamada
2022-05-22 16:18 ` Sedat Dilek
2022-05-22 22:34 ` Sedat Dilek
[not found] ` <2c496d24174e63b27ec047f383df6700@matoro.tk>
2022-08-06 7:23 ` Sedat Dilek
2022-08-06 13:12 ` matoro
2022-08-08 5:54 ` Masahiro Yamada
2022-08-08 13:26 ` matoro
2022-08-08 17:36 ` Masahiro Yamada
2022-08-08 18:42 ` matoro [this message]
2022-08-09 15:20 ` Masahiro Yamada
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