linux-kernel - [PATCH -next] btrfs: Select LIBCRC32C again

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: <1562593403-19545-1-git-send-email-linux@roeck-us.net>
Date:   Mon,  8 Jul 2019 06:43:23 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>
Cc:     linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>,
        David Sterba <dsterba@...e.com>
Subject: [PATCH -next] btrfs: Select LIBCRC32C again

With CONFIG_BTRFS_FS=y and CONFIG_CRYPTO_CRC32C=m, we get:

fs/btrfs/super.o: In function `btrfs_mount_root':
fs/btrfs/super.c:1557: undefined reference to `crc32c_impl'
fs/btrfs/super.o: In function `btrfs_print_mod_info':
fs/btrfs/super.c:2348: undefined reference to `crc32c_impl'
fs/btrfs/extent-tree.o: In function `btrfs_crc32c':
fs/btrfs/ctree.h:2609: undefined reference to `crc32c'
fs/btrfs/ctree.h:2609: undefined reference to `crc32c'
fs/btrfs/ctree.h:2609: undefined reference to `crc32c'
fs/btrfs/dir-item.o: In function `btrfs_name_hash':
fs/btrfs/ctree.h:2619: undefined reference to `crc32c'
fs/btrfs/ctree.h:2619: undefined reference to `crc32c'

and more.

Note that the comment in the offending commit "The module dependency on
crc32c is preserved via MODULE_SOFTDEP("pre: crc32c"), which was previously
provided by LIBCRC32C config option doing the same." is wrong, since it
permits CONFIG_BTRFS_FS=y in combination with CONFIG_CRYPTO_CRC32C=m.

Cc: David Sterba <dsterba@...e.com>
Fixes: d5178578bcd4 ("btrfs: directly call into crypto framework for checksumming")
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 fs/btrfs/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 212b4a854f2c..4c80c70597f9 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -2,6 +2,7 @@
 
 config BTRFS_FS
 	tristate "Btrfs filesystem support"
+	select LIBCRC32C
 	select CRYPTO
 	select CRYPTO_CRC32C
 	select ZLIB_INFLATE
-- 
2.7.4