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| author | John Baldwin <jhb@FreeBSD.org> | 2023-08-22 04:00:26 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2023-08-22 04:00:26 +0000 |
| commit | 7ccaf76a27f138bde3f2b162a9c8ebb6216c05bc (patch) | |
| tree | f4381d1ec7b332cffdd67d662fbf6906a560b519 | |
| parent | 682d5a87e51966939710fb52cc4e8fbb7bff04b5 (diff) | |
| download | src-7ccaf76a27f138bde3f2b162a9c8ebb6216c05bc.tar.gz src-7ccaf76a27f138bde3f2b162a9c8ebb6216c05bc.zip | |
riscv db_trace: Ensure trapframe pointer is suitably aligned.
Suggested by: jrtc27
Reviewed by: jrtc27
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D41534
| -rw-r--r-- | sys/riscv/riscv/db_trace.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/riscv/riscv/db_trace.c b/sys/riscv/riscv/db_trace.c index 00ec1a750e33..12972839c29d 100644 --- a/sys/riscv/riscv/db_trace.c +++ b/sys/riscv/riscv/db_trace.c @@ -84,7 +84,8 @@ db_stack_trace_cmd(struct thread *td, struct unwind_state *frame) 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; |