@@ -489,11 +489,7 @@ static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp
* Calls kunit_kfree() only if @x is not in .rodata section.
* See kunit_kstrdup_const() for more information.
*/
-static inline void kunit_kfree_const(struct kunit *test, const void *x)
-{
- if (!is_kernel_rodata((unsigned long)x))
- kunit_kfree(test, x);
-}
+void kunit_kfree_const(struct kunit *test, const void *x);
/**
* kunit_kstrdup() - Duplicates a string into a test managed allocation.
@@ -527,16 +523,10 @@ static inline char *kunit_kstrdup(struct kunit *test, const char *str, gfp_t gfp
* @gfp: flags passed to underlying kmalloc().
*
* Calls kunit_kstrdup() only if @str is not in the rodata section. Must be freed with
- * kunit_free_const() -- not kunit_free().
+ * kunit_kfree_const() -- not kunit_kfree().
* See kstrdup_const() and kunit_kmalloc_array() for more information.
*/
-static inline const char *kunit_kstrdup_const(struct kunit *test, const char *str, gfp_t gfp)
-{
- if (is_kernel_rodata((unsigned long)str))
- return str;
-
- return kunit_kstrdup(test, str, gfp);
-}
+const char *kunit_kstrdup_const(struct kunit *test, const char *str, gfp_t gfp);
/**
* kunit_vm_mmap() - Allocate KUnit-tracked vm_mmap() area
@@ -874,6 +874,25 @@ void kunit_kfree(struct kunit *test, const void *ptr)
}
EXPORT_SYMBOL_GPL(kunit_kfree);
+void kunit_kfree_const(struct kunit *test, const void *x)
+{
+#if !IS_MODULE(CONFIG_KUNIT)
+ if (!is_kernel_rodata((unsigned long)x))
+#endif
+ kunit_kfree(test, x);
+}
+EXPORT_SYMBOL_GPL(kunit_kfree_const);
+
+const char *kunit_kstrdup_const(struct kunit *test, const char *str, gfp_t gfp)
+{
+#if !IS_MODULE(CONFIG_KUNIT)
+ if (is_kernel_rodata((unsigned long)str))
+ return str;
+#endif
+ return kunit_kstrdup(test, str, gfp);
+}
+EXPORT_SYMBOL_GPL(kunit_kstrdup_const);
+
void kunit_cleanup(struct kunit *test)
{
struct kunit_resource *res;
In commit 7d3c33b290b1 ("kunit: Device wrappers should also manage driver name"), the kunit_kstrdup_const() and kunit_kfree_const() were introduced as an optimisation of kunit_kstrdup(), which only copy/free strings from the kernel rodata. However, these are inline functions, and is_kernel_rodata() only works for built-in code. This causes problems in two cases: - If kunit is built as a module, __{start,end}_rodata is not defined. - If a kunit test using these functions is built as a module, it will suffer the same fate. Restrict the is_kernel_rodata() case to when KUnit is built as a module, which fixes the first case, at the cost of losing the optimisation. Also, make kunit_{kstrdup,kfree}_const non-inline, so that other modules using them will not accidentally depend on is_kernel_rodata(). If KUnit is built-in, they'll benefit from the optimisation, if KUnit is not, they won't, but the string will be properly duplicated. (And fix a couple of typos in the doc comment, too.) Reported-by: Nico Pache <npache@redhat.com> Closes: https://lore.kernel.org/all/CAA1CXcDKht4vOL-acxrARbm6JhGna8_k8wjYJ-vHONink8aZ=w@mail.gmail.com/ Fixes: 7d3c33b290b1 ("kunit: Device wrappers should also manage driver name") Signed-off-by: David Gow <davidgow@google.com> --- include/kunit/test.h | 16 +++------------- lib/kunit/test.c | 19 +++++++++++++++++++ 2 files changed, 22 insertions(+), 13 deletions(-)