From b11052be3ea7c1dfc81804b203bc4369edafd040 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sun, 14 Dec 2025 18:57:30 +0100 Subject: [PATCH] crash_dump: constify struct configfs_item_operations and configfs_group_operations 'struct configfs_item_operations' and 'configfs_group_operations' are not modified in this driver. Constifying these structures moves some data to a read-only section, so increases overall security, especially when the structure holds some function pointers. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 16339 11001 384 27724 6c4c kernel/crash_dump_dm_crypt.o After: ===== text data bss dec hex filename 16499 10841 384 27724 6c4c kernel/crash_dump_dm_crypt.o Link: https://lkml.kernel.org/r/d046ee5666d2f6b1a48ca1a222dfbd2f7c44462f.1765735035.git.christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET Reviewed-by: Coiby Xu Tested-by: Coiby Xu Cc: Baoquan He Cc: Dave Young Cc: Vivek Goyal Signed-off-by: Andrew Morton --- kernel/crash_dump_dm_crypt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/crash_dump_dm_crypt.c b/kernel/crash_dump_dm_crypt.c index 401423ba477da..0d23dc1de67c9 100644 --- a/kernel/crash_dump_dm_crypt.c +++ b/kernel/crash_dump_dm_crypt.c @@ -223,7 +223,7 @@ static void config_key_release(struct config_item *item) key_count--; } -static struct configfs_item_operations config_key_item_ops = { +static const struct configfs_item_operations config_key_item_ops = { .release = config_key_release, }; @@ -298,7 +298,7 @@ static struct configfs_attribute *config_keys_attrs[] = { * Note that, since no extra work is required on ->drop_item(), * no ->drop_item() is provided. */ -static struct configfs_group_operations config_keys_group_ops = { +static const struct configfs_group_operations config_keys_group_ops = { .make_item = config_keys_make_item, }; -- 2.47.3