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Subject[PATCH] mm: Remove usercopy_warn()
Date
Users of usercopy_warn() were removed by
commit 53944f171a89 ("mm: remove HARDENED_USERCOPY_FALLBACK")

Remote it.

Cc: Stephen Kitt <steve@sk2.org>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
include/linux/uaccess.h | 2 --
mm/usercopy.c | 11 -----------
2 files changed, 13 deletions(-)

diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index ac0394087f7d..bca27b4e5eb2 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -401,8 +401,6 @@ static inline void user_access_restore(unsigned long flags) { }
#endif

#ifdef CONFIG_HARDENED_USERCOPY
-void usercopy_warn(const char *name, const char *detail, bool to_user,
- unsigned long offset, unsigned long len);
void __noreturn usercopy_abort(const char *name, const char *detail,
bool to_user, unsigned long offset,
unsigned long len);
diff --git a/mm/usercopy.c b/mm/usercopy.c
index d0d268135d96..e7b0cb49daa1 100644
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -70,17 +70,6 @@ static noinline int check_stack_object(const void *obj, unsigned long len)
* kmem_cache_create_usercopy() function to create the cache (and
* carefully audit the whitelist range).
*/
-void usercopy_warn(const char *name, const char *detail, bool to_user,
- unsigned long offset, unsigned long len)
-{
- WARN_ONCE(1, "Bad or missing usercopy whitelist? Kernel memory %s attempt detected %s %s%s%s%s (offset %lu, size %lu)!\n",
- to_user ? "exposure" : "overwrite",
- to_user ? "from" : "to",
- name ? : "unknown?!",
- detail ? " '" : "", detail ? : "", detail ? "'" : "",
- offset, len);
-}
-
void __noreturn usercopy_abort(const char *name, const char *detail,
bool to_user, unsigned long offset,
unsigned long len)
--
2.33.1
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