linux-kernel - [PATCH v2] modpost: Add line break in the section mismatch warning

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Date:   Mon, 27 Jun 2022 15:27:08 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Xuefeng Li <lixuefeng@...ngson.cn>, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] modpost: Add line break in the section mismatch warning

The section mismatch warning may be too long, add a line break
to make it more readable.

Without this patch:

  LD      vmlinux.o
  MODPOST vmlinux.symvers
WARNING: modpost: vmlinux.o(___ksymtab+prom_init_numa_memory+0x0): Section mismatch in reference from the variable __ksymtab_prom_init_numa_memory to the function .init.text:prom_init_numa_memory()
The symbol prom_init_numa_memory is exported and annotated __init
Fix this by removing the __init annotation of prom_init_numa_memory or drop the export.

With this patch:

  LD      vmlinux.o
  MODPOST vmlinux.symvers
WARNING: modpost: vmlinux.o(___ksymtab+prom_init_numa_memory+0x0): Section mismatch in reference
from the variable __ksymtab_prom_init_numa_memory to the function .init.text:prom_init_numa_memory()
The symbol prom_init_numa_memory is exported and annotated __init
Fix this by removing the __init annotation of prom_init_numa_memory or drop the export.

This is based on Linux 5.19-rc4.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---

v2: update the commit message

 scripts/mod/modpost.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 620dc8c..4cc894f 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1320,8 +1320,8 @@ static void report_sec_mismatch(const char *modname,
 	get_pretty_name(from_is_func, &from, &from_p);
 	get_pretty_name(to_is_func, &to, &to_p);

-	warn("%s(%s+0x%llx): Section mismatch in reference from the %s %s%s "
-	     "to the %s %s:%s%s\n",
+	warn("%s(%s+0x%llx): Section mismatch in reference\n"
+	     "from the %s %s%s to the %s %s:%s%s\n",
 	     modname, fromsec, fromaddr, from, fromsym, from_p, to, tosec,
 	     tosym, to_p);

-- 
2.1.0