From e9f5a55b70ae6187ab64ef2d1232ae2738e31d1f Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Thu, 8 Jan 2026 20:56:20 +0100 Subject: [PATCH] dm: use READ_ONCE in dm_blk_report_zones The functon dm_blk_report_zones reads md->zone_revalidate_map, however it may change while the function is running. Use READ_ONCE. Signed-off-by: Mikulas Patocka Fixes: 37f53a2c60d0 ("dm: fix dm_blk_report_zones") Reviewed-by: Benjamin Marzinski --- drivers/md/dm-zone.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c index bc4e45862a220..f29acf64429a7 100644 --- a/drivers/md/dm-zone.c +++ b/drivers/md/dm-zone.c @@ -50,7 +50,7 @@ int dm_blk_report_zones(struct gendisk *disk, sector_t sector, { struct mapped_device *md = disk->private_data; struct dm_table *map; - struct dm_table *zone_revalidate_map = md->zone_revalidate_map; + struct dm_table *zone_revalidate_map = READ_ONCE(md->zone_revalidate_map); int srcu_idx, ret = -EIO; bool put_table = false; -- 2.47.3