Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH] mm: Remove usercopy_warn() | Date | Mon, 7 Feb 2022 12:05:20 +0100 |
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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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