linux-kernel - [PATCH] kbuild: modules_install: Warn if System.map file is not found

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <b82ada4b-25d1-5612-4405-d6a09eb59433@infradead.org>
Date:   Fri, 31 Aug 2018 15:33:34 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kbuild <linux-kbuild@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Subject: [PATCH] kbuild: modules_install: Warn if System.map file is not found

From: Randy Dunlap <rdunlap@...radead.org>

If there is no System.map file for "make modules_install",
scripts/depmod.sh will silently exit with success, having done
nothing.  Since this is an unexpected situation, change it to
report a Warning for the missing file.  The behavior is not
changed except for the Warning message.

The (previous) silent success and new Warning can be reproduced
by:
$ make mrproper; make defconfig
$ make modules; make modules_install

and since System.map is produced by "make vmlinux", the steps
above omit producing the System.map file.

Reported-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
---
 scripts/depmod.sh |    1 +
 1 file changed, 1 insertion(+)

--- lnx-419-rc1.orig/scripts/depmod.sh
+++ lnx-419-rc1/scripts/depmod.sh
@@ -11,6 +11,7 @@ DEPMOD=$1
 KERNELRELEASE=$2
 
 if ! test -r System.map ; then
+	echo "Warning: modules_install: missing 'System.map' file"
 	exit 0
 fi