Module Name: src
Committed By: riastradh
Date: Sat Aug 27 20:40:03 UTC 2022
Modified Files:
src/sys/arch/x86/x86: db_memrw.c
Log Message:
x86/db_memrw.c: Mark db_read_bytes, db_write_bytes __noubsan.
These intentionally do loads and stores that may be misaligned, which
are fine on this x86-specific code. Should avoid double-panic in
disassembler on panic with UBSan enabled.
To generate a diff of this commit:
cvs rdiff -u -r1.15 -r1.16 src/sys/arch/x86/x86/db_memrw.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/x86/db_memrw.c
diff -u src/sys/arch/x86/x86/db_memrw.c:1.15 src/sys/arch/x86/x86/db_memrw.c:1.16
--- src/sys/arch/x86/x86/db_memrw.c:1.15 Sat Aug 27 20:39:54 2022
+++ src/sys/arch/x86/x86/db_memrw.c Sat Aug 27 20:40:03 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: db_memrw.c,v 1.15 2022/08/27 20:39:54 riastradh Exp $ */
+/* $NetBSD: db_memrw.c,v 1.16 2022/08/27 20:40:03 riastradh Exp $ */
/*-
* Copyright (c) 1996, 2000 The NetBSD Foundation, Inc.
@@ -53,7 +53,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: db_memrw.c,v 1.15 2022/08/27 20:39:54 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: db_memrw.c,v 1.16 2022/08/27 20:40:03 riastradh Exp $");
#include <sys/param.h>
#include <sys/proc.h>
@@ -85,7 +85,7 @@ db_validate_address(vaddr_t addr)
/*
* Read bytes from kernel address space for debugger.
*/
-void
+void __noubsan
db_read_bytes(vaddr_t addr, size_t size, char *data)
{
char *src;
@@ -205,7 +205,7 @@ db_write_text(vaddr_t addr, size_t size,
/*
* Write bytes to kernel address space for debugger.
*/
-void
+void __noubsan
db_write_bytes(vaddr_t addr, size_t size, const char *data)
{
extern struct bootspace bootspace;
