image->control_page represents the starting address for allocating the next
control page, while hole_end represents the address of the last valid byte
of the currently allocated control page.
Therefore, after successfully allocating a control page, image->control_page
should be updated to `hole_end + 1`, rather than hole_end.
Signed-off-by: Yuntao Wang <ytcoode@xxxxxxxxx>
---
kernel/kexec_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 2f039a7d9af9..a08031b57a61 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -457,7 +457,7 @@ static struct page *kimage_alloc_crash_control_pages(struct kimage *image,
/* If I don't overlap any segments I have found my hole! */
if (i == image->nr_segments) {
pages = pfn_to_page(hole_start >> PAGE_SHIFT);
- image->control_page = hole_end;
+ image->control_page = hole_end + 1;
break;
}
}
--
2.43.0
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