On Wed, 9 Aug 2017, hch@xxxxxx wrote: > Does commit 615d22a51c04856efe62af6e1d5b450aaf5cc2c0 > "block: Fix __blkdev_issue_zeroout loop" fix the issue for you? > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel I think that patch is incorrect. sector_t may be a 32-bit type and nr_sects << 9 may overflow. static unsigned int __blkdev_sectors_to_bio_pages(sector_t nr_sects) { sector_t bytes = (nr_sects << 9) + PAGE_SIZE - 1; return min(bytes >> PAGE_SHIFT, (sector_t)BIO_MAX_PAGES); } Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
