diff options
| -rw-r--r-- | drivers/md/dm-log.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index 40ed70df673..737961f275c 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -457,6 +457,14 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti, */ buf_size = dm_round_up((LOG_OFFSET << SECTOR_SHIFT) + bitset_size, ti->limits.hardsect_size); + + if (buf_size > dev->bdev->bd_inode->i_size) { + DMWARN("log device %s too small: need %llu bytes", + dev->name, (unsigned long long)buf_size); + kfree(lc); + return -EINVAL; + } + lc->header_location.count = buf_size >> SECTOR_SHIFT; lc->io_req.mem.type = DM_IO_VMA; |