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diff --git a/sys/amd64/amd64/db_trace.c b/sys/amd64/amd64/db_trace.c
--- a/sys/amd64/amd64/db_trace.c
+++ b/sys/amd64/amd64/db_trace.c
@@ -205,7 +205,8 @@
*/
tf_addr = *fp + 16;
- if (!__is_aligned(tf_addr, _Alignof(*tf)) || !INKERNEL(tf_addr)) {
+ if (!__is_aligned(tf_addr, _Alignof(struct trapframe)) ||
+ !INKERNEL(tf_addr)) {
db_printf("--- invalid trapframe %p\n", (void *)tf_addr);
*ip = 0;
*fp = 0;
diff --git a/sys/arm64/arm64/db_trace.c b/sys/arm64/arm64/db_trace.c
--- a/sys/arm64/arm64/db_trace.c
+++ b/sys/arm64/arm64/db_trace.c
@@ -92,7 +92,7 @@
struct trapframe *tf;
tf = (struct trapframe *)(uintptr_t)frame->fp - 1;
- if (!__is_aligned(tf, _Alignof(*tf)) ||
+ if (!__is_aligned(tf, _Alignof(struct trapframe)) ||
!kstack_contains(td, (vm_offset_t)tf,
sizeof(*tf))) {
db_printf("--- invalid trapframe %p\n", tf);
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
@@ -83,7 +83,7 @@
struct trapframe *tf;
tf = (struct trapframe *)(uintptr_t)frame->sp;
- if (!__is_aligned(tf, _Alignof(*tf)) ||
+ if (!__is_aligned(tf, _Alignof(struct trapframe)) ||
!kstack_contains(td, (vm_offset_t)tf,
sizeof(*tf))) {
db_printf("--- invalid trapframe %p\n", tf);

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