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| author | Leon Romanovsky <leonro@mellanox.com> | 2020-04-19 18:55:06 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-04-21 23:27:37 +0300 |
| commit | 51161bfc66a68d21f13d15a689b3ea7980457790 (patch) | |
| tree | 32af1a956fda40175af5dc2587670f8a79ac0abc /scripts/mod | |
| parent | b4f37219813fd126b2cda6d7805d8c61b8cf801a (diff) | |
| download | linux-51161bfc66a68d21f13d15a689b3ea7980457790.tar.xz | |
kernel/module: Hide vermagic header file from general use
VERMAGIC* definitions are not supposed to be used by the drivers,
see this [1] bug report, so introduce special define to guard inclusion
of this header file and define it in kernel/modules.h and in internal
script that generates *.mod.c files.
In-tree module build:
➜ kernel git:(vermagic) ✗ make clean
➜ kernel git:(vermagic) ✗ make M=drivers/infiniband/hw/mlx5
➜ kernel git:(vermagic) ✗ modinfo drivers/infiniband/hw/mlx5/mlx5_ib.ko
filename: /images/leonro/src/kernel/drivers/infiniband/hw/mlx5/mlx5_ib.ko
<...>
vermagic: 5.6.0+ SMP mod_unload modversions
Out-of-tree module build:
➜ mlx5 make -C /images/leonro/src/kernel clean M=/tmp/mlx5
➜ mlx5 make -C /images/leonro/src/kernel M=/tmp/mlx5
➜ mlx5 modinfo /tmp/mlx5/mlx5_ib.ko
filename: /tmp/mlx5/mlx5_ib.ko
<...>
vermagic: 5.6.0+ SMP mod_unload modversions
[1] https://lore.kernel.org/lkml/20200411155623.GA22175@zn.tnic
Reported-by: Borislav Petkov <bp@suse.de>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Jessica Yu <jeyu@kernel.org>
Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'scripts/mod')
| -rw-r--r-- | scripts/mod/modpost.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 5c3c50c5ec52..7f7d4ee7b652 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -2251,6 +2251,7 @@ static void add_header(struct buffer *b, struct module *mod) * Include build-salt.h after module.h in order to * inherit the definitions. */ + buf_printf(b, "#define INCLUDE_VERMAGIC\n"); buf_printf(b, "#include <linux/build-salt.h>\n"); buf_printf(b, "#include <linux/vermagic.h>\n"); buf_printf(b, "#include <linux/compiler.h>\n"); |