diff options
| author | Hannes Reinecke <hare@suse.de> | 2020-06-02 14:09:56 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2020-06-05 21:59:54 +0300 |
| commit | 27d49ac1dd751897506ba51df7226fc0ce7ef681 (patch) | |
| tree | 6ce06acd58dc57a7a2e40294050e6b4a9682fd6b /drivers/md/dm-zoned-metadata.c | |
| parent | 2094045fe5b5dda98c4ec6cb1ac7b12ba4382856 (diff) | |
| download | linux-27d49ac1dd751897506ba51df7226fc0ce7ef681.tar.xz | |
dm zoned: check superblock location
When specifying several devices the superblock location must be
checked to ensure the devices are specified in the correct order.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-zoned-metadata.c')
| -rw-r--r-- | drivers/md/dm-zoned-metadata.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c index 59a34895f5a8..314ce31a2c43 100644 --- a/drivers/md/dm-zoned-metadata.c +++ b/drivers/md/dm-zoned-metadata.c @@ -997,7 +997,7 @@ static int dmz_check_sb(struct dmz_metadata *zmd, struct dmz_sb *dsb, struct dmz_dev *dev = dsb->dev; unsigned int nr_meta_zones, nr_data_zones; u32 crc, stored_crc; - u64 gen; + u64 gen, sb_block; if (le32_to_cpu(sb->magic) != DMZ_MAGIC) { dmz_dev_err(dev, "Invalid meta magic (needed 0x%08x, got 0x%08x)", @@ -1026,6 +1026,14 @@ static int dmz_check_sb(struct dmz_metadata *zmd, struct dmz_sb *dsb, return -ENXIO; } + sb_block = le64_to_cpu(sb->sb_block); + if (sb_block != (u64)dsb->zone->id << zmd->zone_nr_blocks_shift ) { + dmz_dev_err(dev, "Invalid superblock position " + "(is %llu expected %llu)", + sb_block, + (u64)dsb->zone->id << zmd->zone_nr_blocks_shift); + return -EINVAL; + } if (zmd->sb_version > 1) { uuid_t sb_uuid; |