uprobes: use kmap_local_page() for temporary page mappings

Replace deprecated kmap_atomic() with kmap_local_page().

Signed-off-by: Keke Ming <ming.jvle@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Link: https://patch.msgid.link/20260103084243.195125-6-ming.jvle@gmail.com

Author: Jvlegod

kernel/events/uprobes.c

@@ -179,16 +179,16 @@ bool __weak is_trap_insn(uprobe_opcode_t *insn)
 
 void uprobe_copy_from_page(struct page *page, unsigned long vaddr, void *dst, int len)
 {
-	void *kaddr = kmap_atomic(page);
+	void *kaddr = kmap_local_page(page);
 	memcpy(dst, kaddr + (vaddr & ~PAGE_MASK), len);
-	kunmap_atomic(kaddr);
+	kunmap_local(kaddr);
 }
 
 static void copy_to_page(struct page *page, unsigned long vaddr, const void *src, int len)
 {
-	void *kaddr = kmap_atomic(page);
+	void *kaddr = kmap_local_page(page);
 	memcpy(kaddr + (vaddr & ~PAGE_MASK), src, len);
-	kunmap_atomic(kaddr);
+	kunmap_local(kaddr);
 }
 
 static int verify_opcode(struct page *page, unsigned long vaddr, uprobe_opcode_t *insn,
@@ -323,7 +323,7 @@ __update_ref_ctr(struct mm_struct *mm, unsigned long vaddr, short d)
 		return ret == 0 ? -EBUSY : ret;
 	}
 
-	kaddr = kmap_atomic(page);
+	kaddr = kmap_local_page(page);
 	ptr = kaddr + (vaddr & ~PAGE_MASK);
 
 	if (unlikely(*ptr + d < 0)) {
@@ -336,7 +336,7 @@ __update_ref_ctr(struct mm_struct *mm, unsigned long vaddr, short d)
 	*ptr += d;
 	ret = 0;
 out:
-	kunmap_atomic(kaddr);
+	kunmap_local(kaddr);
 	put_page(page);
 	return ret;
 }