1 files changed, 7 insertions, 0 deletions

diff --git a/block/partitions/atari.c b/block/partitions/atari.c
index 9875b05e80a2..ff1fb93712c1 100644
--- a/block/partitions/atari.c
+++ b/block/partitions/atari.c
@@ -42,6 +42,13 @@ int atari_partition(struct parsed_partitions *state)
         int part_fmt = 0; /* 0:unknown, 1:AHDI, 2:ICD/Supra */
 #endif
 
+        /*
+         * ATARI partition scheme supports 512 lba only.  If this is not
+         * the case, bail early to avoid miscalculating hd_size.
+         */
+        if (bdev_logical_block_size(state->bdev) != 512)
+                return 0;
+
         rs = read_part_sector(state, 0, &sect);
         if (!rs)
                 return -1;