If no device in the array contains a valid super block, "freshest"
will be NULL, but we happily dereference that pointer in the subsequent
call to validate_super().
Fix it by returning early in this case.
Signed-off-by: Andre Noll <maan@xxxxxxxxxxxxxxx>
---
drivers/md/md.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7943df1..bf1499c 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2249,6 +2249,10 @@ static void analyze_sbs(mddev_t * mddev)
kick_rdev_from_array(rdev);
}
+ if (!freshest) {
+ printk(KERN_ERR "md: no valid devices found\n");
+ return;
+ }
super_types[mddev->major_version].
validate_super(mddev, freshest);
--
1.5.3.8
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