diff options
| author |   Bill Wendling <morbo@google.com> | 2022-04-07 10:59:30 -0700 |
|---|---|---|
| committer |   Kees Cook <keescook@chromium.org> | 2022-04-13 12:15:53 -0700 |
| commit | 75c1182e18f4a66bbd2c91511b6b629dac6a27dc (patch) | |
| tree | e227b081222e07d16770746491389c6bad3fc1e1 /scripts/gcc-plugins | |
| parent | usercopy: Remove HARDENED_USERCOPY_PAGESPAN (diff) | |
| download | linux-dev-75c1182e18f4a66bbd2c91511b6b629dac6a27dc.tar.xz linux-dev-75c1182e18f4a66bbd2c91511b6b629dac6a27dc.zip | |
security: don't treat structure as an array of struct hlist_head
The initialization of "security_hook_heads" is done by casting it to
another structure pointer type, and treating it as an array of "struct
hlist_head" objects. This requires an exception be made in "randstruct",
because otherwise it will emit an error, reducing the effectiveness of
the hardening technique.
Instead of using a cast, initialize the individual struct hlist_head
elements in security_hook_heads explicitly. This removes the need for
the cast and randstruct exception.
Signed-off-by: Bill Wendling <morbo@google.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220407175930.471870-1-morbo@google.com
Diffstat (limited to 'scripts/gcc-plugins')
| -rw-r--r-- | scripts/gcc-plugins/randomize_layout_plugin.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c index 334741a31d0a..c2ec81b68505 100644 --- a/scripts/gcc-plugins/randomize_layout_plugin.c +++ b/scripts/gcc-plugins/randomize_layout_plugin.c @@ -52,8 +52,6 @@ static const struct whitelist_entry whitelist[] = { { "net/unix/af_unix.c", "unix_skb_parms", "char" }, /* big_key payload.data struct splashing */ { "security/keys/big_key.c", "path", "void *" }, - /* walk struct security_hook_heads as an array of struct hlist_head */ - { "security/security.c", "hlist_head", "security_hook_heads" }, { } }; |