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stack: Declare {randomize_,}kstack_offset to fix Sparse warnings 

Fix the following Sparse warnings that got noticed when the PPC-dev
patchwork was checking another patch (see the link below):

init/main.c:862:1: warning: symbol 'randomize_kstack_offset' was not declared. Should it be static?
init/main.c:864:1: warning: symbol 'kstack_offset' was not declared. Should it be static?

Which in fact are triggered on all architectures that have
HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET support (for instances x86, arm64
etc).

Link: https://lore.kernel.org/lkml/e7b0d68b-914d-7283-827c-101988923929@huawei.com/T/#m49b2d4490121445ce4bf7653500aba59eefcb67f
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Fixes: 39218ff4c6 ("stack: Optionally randomize kernel stack offset each syscall")
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220629060423.2515693-1-gongruiqi1@huawei.com
This commit is contained in:
GONG, Ruiqi 2022-06-29 14:04:23 +08:00 committed by Kees Cook
parent 6a022dd29f
commit 375561bd61
1 changed files with 1 additions and 0 deletions
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init/main.c
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@ -99,6 +99,7 @@
#include <linux/kcsan.h> #include <linux/kcsan.h>
#include <linux/init_syscalls.h> #include <linux/init_syscalls.h>
#include <linux/stackdepot.h> #include <linux/stackdepot.h>
#include <linux/randomize_kstack.h>
#include <net/net_namespace.h> #include <net/net_namespace.h>
#include <asm/io.h> #include <asm/io.h>