[PATCH 1/2] kho: kho_restore_vmalloc: fix initialization of pages array

Mike Rapoport
2025-11-25T11:09:32Z

From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>

In case a preserved vmalloc allocation was using huge pages, all pages in
the array of pages added to vm_struct during kho_restore_vmalloc() are
wrongly set to the same page.

Fix the indexing when assigning pages to that array.

Fixes: a667300bd53f ("kho: add support for preserving vmalloc allocations")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
kernel/liveupdate/kexec_handover.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/liveupdate/kexec_handover.c b/kernel/liveupdate/kexec_handover.c
index 5809c6fe331c..e64ee87fa62a 100644
--- a/kernel/liveupdate/kexec_handover.c
+++ b/kernel/liveupdate/kexec_handover.c
@@ -1096,7 +1096,7 @@ void *kho_restore_vmalloc(const struct kho_vmalloc *preservation)
goto err_free_pages_array;

for (int j = 0; j < contig_pages; j++)
- pages[idx++] = page;
+ pages[idx++] = page + j;

phys += contig_pages * PAGE_SIZE;
}
--
2.50.1