Check memory allocations when cloning bio's. --- linux-2.5.53a/drivers/md/dm.c Mon Dec 23 23:21:04 2002 +++ linux-2.5.53b/drivers/md/dm.c Fri Dec 27 14:50:29 2002 @@ -394,6 +393,10 @@ */ clone = clone_bio(bio, ci->sector, ci->idx, bio->bi_vcnt - ci->idx, ci->sector_count); + if (!clone) { + dec_pending(ci->io, -ENOMEM); + return; + } __map_bio(ti, clone, ci->io); ci->sector_count = 0; @@ -417,6 +420,10 @@ } clone = clone_bio(bio, ci->sector, ci->idx, i - ci->idx, len); + if (!clone) { + dec_pending(ci->io, -ENOMEM); + return; + } __map_bio(ti, clone, ci->io); ci->sector += len;