Subject: [PATCH v7 01/16] arm64: module: remove unneeded call to kasan_alloc_module_shadow()

From: Mike Rapoport <[email-masked]>
Date: Mon, 29 Apr 2024 15:16:05 +0300

From: "Mike Rapoport (IBM)" <[email-masked]>

Since commit f6f37d9320a1 ("arm64: select KASAN_VMALLOC for SW/HW_TAGS
modes") KASAN_VMALLOC is always enabled when KASAN is on. This means
that allocations in module_alloc() will be tracked by KASAN protection
for vmalloc() and that kasan_alloc_module_shadow() will be always an
empty inline and there is no point in calling it.

Drop meaningless call to kasan_alloc_module_shadow() from
module_alloc().

Signed-off-by: Mike Rapoport (IBM) <[email-masked]>
---
 arch/arm64/kernel/module.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c
index 47e0be610bb6..e92da4da1b2a 100644
--- a/arch/arm64/kernel/module.c
+++ b/arch/arm64/kernel/module.c
@@ -141,11 +141,6 @@ void *module_alloc(unsigned long size)
 				    __func__);
 	}
 
-	if (p && (kasan_alloc_module_shadow(p, size, GFP_KERNEL) < 0)) {
-		vfree(p);
-		return NULL;
-	}
-
 	/* Memory is intended to be executable, reset the pointer tag. */
 	return kasan_reset_tag(p);
 }
-- 
2.43.0