Re: [PATCH v2 6/7] sections: Add new is_kernel() and is_kernel_text()

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On 2021/7/28 23:32, Steven Rostedt wrote:
On Wed, 28 Jul 2021 16:13:19 +0800
Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:

@@ -64,8 +64,7 @@ const struct exception_table_entry *search_exception_tables(unsigned long addr)
int notrace core_kernel_text(unsigned long addr)
  {
-	if (addr >= (unsigned long)_stext &&
-	    addr < (unsigned long)_etext)
+	if (is_kernel_text(addr))
Perhaps this was a bug, and these functions should be checking the gate
area as well, as that is part of kernel text.
Ok, I would fix this if patch5 is reviewed well.

-- Steve


  		return 1;
if (system_state < SYSTEM_RUNNING &&
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 884a950c7026..88f5b0c058b7 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -235,7 +235,7 @@ static void describe_object(struct kmem_cache *cache, void *object,
static inline bool kernel_or_module_addr(const void *addr)
  {
-	if (addr >= (void *)_stext && addr < (void *)_end)
+	if (is_kernel((unsigned long)addr))
  		return true;
  	if (is_module_address((unsigned long)addr))
  		return true;
--
.




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