5.15-stable review patch. If anyone has any objections, please let me know.
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From: Purva Yeshi purvayeshi550@gmail.com
[ Upstream commit 487767bff572d46f7c37ad846c4078f6d6c9cc55 ]
Fix Smatch-detected error: drivers/md/dm-zoned-target.c:1073 dmz_iterate_devices() error: uninitialized symbol 'r'.
Smatch detects a possible use of the uninitialized variable 'r' in dmz_iterate_devices() because if dmz->nr_ddevs is zero, the loop is skipped and 'r' is returned without being set, leading to undefined behavior.
Initialize 'r' to 0 before the loop. This ensures that if there are no devices to iterate over, the function still returns a defined value.
Signed-off-by: Purva Yeshi purvayeshi550@gmail.com Signed-off-by: Mikulas Patocka mpatocka@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-zoned-target.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c index 48b56d6434f7..98c3c8be3bcc 100644 --- a/drivers/md/dm-zoned-target.c +++ b/drivers/md/dm-zoned-target.c @@ -1066,7 +1066,7 @@ static int dmz_iterate_devices(struct dm_target *ti, struct dmz_target *dmz = ti->private; unsigned int zone_nr_sectors = dmz_zone_nr_sectors(dmz->metadata); sector_t capacity; - int i, r; + int i, r = 0;
for (i = 0; i < dmz->nr_ddevs; i++) { capacity = dmz->dev[i].capacity & ~(zone_nr_sectors - 1);