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diff --git a/sys/riscv/riscv/db_trace.c b/sys/riscv/riscv/db_trace.c
--- a/sys/riscv/riscv/db_trace.c
+++ b/sys/riscv/riscv/db_trace.c
@@ -84,7 +84,8 @@
struct trapframe *tf;
tf = (struct trapframe *)(uintptr_t)frame->sp;
- if (!kstack_contains(td, (vm_offset_t)tf,
+ if (!__is_aligned(tf, _Alignof(*tf)) ||
+ !kstack_contains(td, (vm_offset_t)tf,
sizeof(*tf))) {
db_printf("--- invalid trapframe %p\n", tf);
break;

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