It seems the 32-bit initialization code uses the stack before actually
initializing it.
Probably the boot loader leaves a reasonable value in the stack pointer so
this issue has not been noticed before.
Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
---
x86/cstart.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/x86/cstart.S b/x86/cstart.S
index 38ac19b..fa62e09 100644
--- a/x86/cstart.S
+++ b/x86/cstart.S
@@ -96,13 +96,13 @@ MSR_GS_BASE = 0xc0000101
.globl start
start:
+ mov $stacktop, %esp
push %ebx
call setup_multiboot
call setup_libcflat
mov mb_cmdline(%ebx), %eax
mov %eax, __args
call __setup_args
- mov $stacktop, %esp
setup_percpu_area
call prepare_32
jmpl $8, $start32
--
2.26.2
