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refcount: Remove unused __signed_wrap function annotations

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With CONFIG_UBSAN_INTEGER_WRAP being replaced by Overflow Behavior
Types, remove the __signed_wrap function annotation as it is already
unused, and any future work here will use OBT annotations instead.

Link: https://patch.msgid.link/20260331163725.2765789-1-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
Kees Cook
2026-03-31 14:41:56 -07:00
parent a96ef5848c
commit 00247cbf17
2 changed files with 6 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/compiler_types.h
+1 -8
View File
@@ -432,18 +432,11 @@ struct ftrace_likely_data {
#define at_least
#endif
/* Do not trap wrapping arithmetic within an annotated function. */
#ifdef CONFIG_UBSAN_INTEGER_WRAP
# define __signed_wrap __attribute__((no_sanitize("signed-integer-overflow")))
#else
# define __signed_wrap
#endif
/* Section for code which can't be instrumented at all */
#define __noinstr_section(section) \
noinline notrace __attribute((__section__(section))) \
__no_kcsan __no_sanitize_address __no_profile __no_sanitize_coverage \
__no_sanitize_memory __signed_wrap
__no_sanitize_memory
#define noinstr __noinstr_section(".noinstr.text")
include/linux/refcount.h
+5 -5
View File
@@ -170,7 +170,7 @@ static inline unsigned int refcount_read(const refcount_t *r)
return atomic_read(&r->refs);
}
static inline __must_check __signed_wrap
static inline __must_check
bool __refcount_add_not_zero(int i, refcount_t *r, int *oldp)
{
int old = refcount_read(r);
@@ -212,7 +212,7 @@ static inline __must_check bool refcount_add_not_zero(int i, refcount_t *r)
return __refcount_add_not_zero(i, r, NULL);
}
static inline __must_check __signed_wrap
static inline __must_check
bool __refcount_add_not_zero_limited_acquire(int i, refcount_t *r, int *oldp,
int limit)
{
@@ -244,7 +244,7 @@ __refcount_inc_not_zero_limited_acquire(refcount_t *r, int *oldp, int limit)
return __refcount_add_not_zero_limited_acquire(1, r, oldp, limit);
}
static inline __must_check __signed_wrap
static inline __must_check
bool __refcount_add_not_zero_acquire(int i, refcount_t *r, int *oldp)
{
return __refcount_add_not_zero_limited_acquire(i, r, oldp, INT_MAX);
@@ -277,7 +277,7 @@ static inline __must_check bool refcount_add_not_zero_acquire(int i, refcount_t
return __refcount_add_not_zero_acquire(i, r, NULL);
}
static inline __signed_wrap
static inline
void __refcount_add(int i, refcount_t *r, int *oldp)
{
int old = atomic_fetch_add_relaxed(i, &r->refs);
@@ -383,7 +383,7 @@ static inline void refcount_inc(refcount_t *r)
__refcount_inc(r, NULL);
}
static inline __must_check __signed_wrap
static inline __must_check
bool __refcount_sub_and_test(int i, refcount_t *r, int *oldp)
{
int old = atomic_fetch_sub_release(i, &r->refs);