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Diffstat (limited to 'arch/arm64/kernel/insn.c')
-rw-r--r--arch/arm64/kernel/insn.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c
index 513b29c3e735..4a9e773a177f 100644
--- a/arch/arm64/kernel/insn.c
+++ b/arch/arm64/kernel/insn.c
@@ -21,6 +21,7 @@
#include <asm/fixmap.h>
#include <asm/insn.h>
#include <asm/kprobes.h>
+#include <asm/sections.h>
#define AARCH64_INSN_SF_BIT BIT(31)
#define AARCH64_INSN_N_BIT BIT(22)
@@ -78,16 +79,29 @@ bool aarch64_insn_is_branch_imm(u32 insn)
static DEFINE_RAW_SPINLOCK(patch_lock);
+static bool is_exit_text(unsigned long addr)
+{
+ /* discarded with init text/data */
+ return system_state < SYSTEM_RUNNING &&
+ addr >= (unsigned long)__exittext_begin &&
+ addr < (unsigned long)__exittext_end;
+}
+
+static bool is_image_text(unsigned long addr)
+{
+ return core_kernel_text(addr) || is_exit_text(addr);
+}
+
static void __kprobes *patch_map(void *addr, int fixmap)
{
unsigned long uintaddr = (uintptr_t) addr;
- bool module = !core_kernel_text(uintaddr);
+ bool image = is_image_text(uintaddr);
struct page *page;
- if (module && IS_ENABLED(CONFIG_STRICT_MODULE_RWX))
- page = vmalloc_to_page(addr);
- else if (!module)
+ if (image)
page = phys_to_page(__pa_symbol(addr));
+ else if (IS_ENABLED(CONFIG_STRICT_MODULE_RWX))
+ page = vmalloc_to_page(addr);
else
return addr;