From cf28f6f923cb1dd2765b5c3d7697bb4dcf2096a0 Mon Sep 17 00:00:00 2001 From: Damien Le Moal Date: Sat, 15 Nov 2025 21:15:52 +0900 Subject: [PATCH] zloop: fail zone append operations that are targeting full zones zloop_rw() will fail any regular write operation that targets a full sequential zone. The check for this is indirect and achieved by checking the write pointer alignment of the write operation. But this check is ineffective for zone append operations since these are alwasy automatically directed at a zone write pointer. Prevent zone append operations from being executed in a full zone with an explicit check of the zone condition. Fixes: eb0570c7df23 ("block: new zoned loop block device driver") Cc: stable@vger.kernel.org Signed-off-by: Damien Le Moal Signed-off-by: Jens Axboe --- drivers/block/zloop.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/block/zloop.c b/drivers/block/zloop.c index a975b1d07f1c5..266d233776adf 100644 --- a/drivers/block/zloop.c +++ b/drivers/block/zloop.c @@ -407,6 +407,10 @@ static void zloop_rw(struct zloop_cmd *cmd) mutex_lock(&zone->lock); if (is_append) { + if (zone->cond == BLK_ZONE_COND_FULL) { + ret = -EIO; + goto unlock; + } sector = zone->wp; cmd->sector = sector; } -- 2.47.3