From: Colin Ian King <colin.k...@canonical.com>
commit 4df38926f337 ("UBI: block: Avoid disk size integer overflow")
introduced a dereference on dev (which is not initialized at that
point) when printing a warning message. Re-order disk_capacity check
after the dev is found.
Found by cppcheck:
[drivers/mtd/ubi/block.c:509]: (error) Uninitialized variable: dev
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
drivers/mtd/ubi/block.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index 33c6495..7a9805a 100644
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -504,11 +504,6 @@ static int ubiblock_resize(struct ubi_volume_info *vi)
struct ubiblock *dev;
u64 disk_capacity = ((u64)vi->size * vi->usable_leb_size) >> 9;
- if ((sector_t)disk_capacity != disk_capacity) {
- ubi_warn("%s: the volume is too big, cannot resize (%d LEBs)",
- dev->gd->disk_name, vi->size);
- return -EFBIG;
- }
/*
* Need to lock the device list until we stop using the device,
* otherwise the device struct might get released in
@@ -520,6 +515,12 @@ static int ubiblock_resize(struct ubi_volume_info *vi)
mutex_unlock(&devices_mutex);
return -ENODEV;
}
+ if ((sector_t)disk_capacity != disk_capacity) {
+ mutex_unlock(&devices_mutex);
+ ubi_warn("%s: the volume is too big, cannot resize (%d LEBs)",
+ dev->gd->disk_name, vi->size);
+ return -EFBIG;
+ }
mutex_lock(&dev->dev_mutex);
set_capacity(dev->gd, disk_capacity);
--
2.1.0
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