mm: remove usercopy_warn()

Users of usercopy_warn() were removed by commit 53944f171a89 ("mm: remove HARDENED_USERCOPY_FALLBACK") Remove it.

Christophe Leroy committed 4 years ago

Commit 6eada261 parent cb325dd2 files · +0 −13Browse files

Unified · Split

2 files

include/linux/uaccess.h +0 −2
mm/usercopy.c +0 −11

include/linux/uaccess.h+0−2

@@ -401,8 +401,6 @@ static inline void user_access_restore(unsigned long flags) { } · 400 unmodified lines
401	401	#endif
402	402
403	403	#ifdef CONFIG_HARDENED_USERCOPY
404		−void usercopy_warn(const char name, const char detail, bool to_user,
405		− unsigned long offset, unsigned long len);
406	404	void __noreturn usercopy_abort(const char name, const char detail,
407	405	bool to_user, unsigned long offset,
408	406	unsigned long len);

mm/usercopy.c+0−11

@@ -70,17 +70,6 @@ static noinline int check_stack_object(const void *obj, unsigned long len) · 69 unmodified lines
70	70	* kmem_cache_create_usercopy() function to create the cache (and
71	71	* carefully audit the whitelist range).
72	72	*/
73		−void usercopy_warn(const char name, const char detail, bool to_user,
74		− unsigned long offset, unsigned long len)
75		−{
76		− WARN_ONCE(1, "Bad or missing usercopy whitelist? Kernel memory %s attempt detected %s %s%s%s%s (offset %lu, size %lu)!\n",
77		− to_user ? "exposure" : "overwrite",
78		− to_user ? "from" : "to",
79		− name ? : "unknown?!",
80		− detail ? " '" : "", detail ? : "", detail ? "'" : "",
81		− offset, len);
82		−}
83		−
84	73	void __noreturn usercopy_abort(const char name, const char detail,
85	74	bool to_user, unsigned long offset,
86	75	unsigned long len)