[PATCH 1/3] x86/crash: Correct the address boundary of function parameters
Lianbo Jiang
lijiang at redhat.com
Tue Aug 4 00:49:31 EDT 2020
Let's carefully handle the boundary of the function parameter to make
sure that the arguments passed doesn't exceed the address range.
Signed-off-by: Lianbo Jiang <lijiang at redhat.com>
---
arch/x86/kernel/crash.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index fd87b59452a3..a8f3af257e26 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -230,7 +230,7 @@ static int elf_header_exclude_ranges(struct crash_mem *cmem)
int ret = 0;
/* Exclude the low 1M because it is always reserved */
- ret = crash_exclude_mem_range(cmem, 0, 1<<20);
+ ret = crash_exclude_mem_range(cmem, 0, (1<<20)-1);
if (ret)
return ret;
--
2.17.1
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