From 5ce5a15f0bf007e850e15259bba4f53736605fb2 Mon Sep 17 00:00:00 2001

From: Lukasz Florczak <lukasz.florczak@linux.intel.com>

Date: Fri, 25 Mar 2022 12:48:59 +0100

Subject: [PATCH 02/12] mdadm: Fix double free

If there was a size mismatch after creation it would get fixed on grow

in imsm_fix_size_mismatch(), but due to double free "double free or corruption (fasttop)"

error occurs and grow cannot proceed.

Signed-off-by: Lukasz Florczak <lukasz.florczak@linux.intel.com>

Signed-off-by: Jes Sorensen <jsorensen@fb.com>

---

 super-intel.c | 3 +--

 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/super-intel.c b/super-intel.c

index 5ffa7636..6ff336ee 100644

--- a/super-intel.c

+++ b/super-intel.c

@@ -11783,9 +11783,8 @@ static int imsm_fix_size_mismatch(struct supertype *st, int subarray_index)

 			st->update_tail = &st->updates;

 		} else {

 			imsm_sync_metadata(st);

+			free(update);

 		}

-

-		free(update);

 	}

 	ret_val = 0;

 exit:

-- 

2.31.1