UBI: fix leak in ubi_scan_erase_peb
Coverity (1769) found the following problem: if the erase counter
overflow check triggers, ec_hdr is leaked.
Moving the allocation after the overflow check should take care of it.
Signed-off-by: Florin Malita <fmalita@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
index 94ee549..80c73d8 100644
--- a/drivers/mtd/ubi/scan.c
+++ b/drivers/mtd/ubi/scan.c
@@ -673,10 +673,6 @@
int err;
struct ubi_ec_hdr *ec_hdr;
- ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
- if (!ec_hdr)
- return -ENOMEM;
-
if ((long long)ec >= UBI_MAX_ERASECOUNTER) {
/*
* Erase counter overflow. Upgrade UBI and use 64-bit
@@ -686,6 +682,10 @@
return -EINVAL;
}
+ ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
+ if (!ec_hdr)
+ return -ENOMEM;
+
ec_hdr->ec = cpu_to_be64(ec);
err = ubi_io_sync_erase(ubi, pnum, 0);