[PATCH 2/2] crash_core: fix out-of-bounds access check in crash_exclude_mem_range()

[Yuntao Wang]

mem->nr_ranges represents the current number of elements stored in
the mem->ranges array, and mem->max_nr_ranges represents the maximum number
of elements that the mem->ranges array can hold. Therefore, the correct
array out-of-bounds check should be mem->nr_ranges >= mem->max_nr_ranges.

Signed-off-by: Yuntao Wang <ytcoode at gmail.com>
---
 kernel/crash_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index d4313b53837e..991494d4cf43 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -627,7 +627,7 @@ int crash_exclude_mem_range(struct crash_mem *mem,
 		return 0;
 
 	/* Split happened */
-	if (i == mem->max_nr_ranges - 1)
+	if (mem->nr_ranges >= mem->max_nr_ranges)
 		return -ENOMEM;
 
 	/* Location where new range should go */
-- 
2.43.0