diff --git a/kernel/bpf/arena.c b/kernel/bpf/arena.c
index 870aeb51d70ad..095a9554e1def 100644
--- a/kernel/bpf/arena.c
+++ b/kernel/bpf/arena.c
@@ -39,7 +39,7 @@
  */
 
 /* number of bytes addressable by LDX/STX insn with 16-bit 'off' field */
-#define GUARD_SZ (1ull << sizeof_field(struct bpf_insn, off) * 8)
+#define GUARD_SZ round_up(1ull << sizeof_field(struct bpf_insn, off) * 8, PAGE_SIZE << 1)
 #define KERN_VM_SZ (SZ_4G + GUARD_SZ)
 
 struct bpf_arena {