module: don't annotate ROX memory as kmemleak_not_leak()

jira LE-4694
Rebuild_History Non-Buildable kernel-6.12.0-55.43.1.el10_0
commit-author Mike Rapoport (Microsoft) <rppt@kernel.org>
commit 6752047

The ROX memory allocations are part of a larger vmalloc allocation and
annotating them with kmemleak_not_leak() confuses kmemleak.

Skip kmemleak_not_leak() annotations for the ROX areas.

Fixes: c287c07 ("module: switch to execmem API for remapping as RW and restoring ROX")
Fixes: 64f6a4e ("x86: re-enable EXECMEM_ROX support")
	Reported-by: "Borah, Chaitanya Kumar" <chaitanya.kumar.borah@intel.com>
	Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
	Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250214084531.3299390-1-rppt@kernel.org
(cherry picked from commit 6752047)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>

Author: PlaidCat

kernel/module/main.c

@@ -1232,7 +1232,8 @@ static int module_memory_alloc(struct module *mod, enum mod_mem_type type)
 	 * *do* eventually get freed, but let's just keep things simple
 	 * and avoid *any* false positives.
 	 */
-	kmemleak_not_leak(ptr);
+	if (!mod->mem[type].is_rox)
+		kmemleak_not_leak(ptr);
 
 	memset(ptr, 0, size);
 	mod->mem[type].base = ptr;