nvdimm: Fix badblocks clear off-by-one error

stable inclusion
from stable-v5.10.129
commit e6a7d30b650a813bf82ef208ef1a85e2900c416a
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5YNDQ

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e6a7d30b650a813bf82ef208ef1a85e2900c416a

--------------------------------

commit ef910200 upstream.

nvdimm_clear_badblocks_region() validates badblock clearing requests
against the span of the region, however it compares the inclusive
badblock request range to the exclusive region range. Fix up the
off-by-one error.

Fixes: 23f49844 ("libnvdimm: rework region badblocks clearing")
Cc: <stable@vger.kernel.org>
Signed-off-by: NChris Ye <chris.ye@intel.com>
Reviewed-by: NVishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/165404219489.2445897.9792886413715690399.stgit@dwillia2-xfhSigned-off-by: NDan Williams <dan.j.williams@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>

drivers/nvdimm/bus.c

@@ -187,8 +187,8 @@ static int nvdimm_clear_badblocks_region(struct device *dev, void *data)
 	ndr_end = nd_region->ndr_start + nd_region->ndr_size - 1;
 
 	/* make sure we are in the region */
-	if (ctx->phys < nd_region->ndr_start
-			|| (ctx->phys + ctx->cleared) > ndr_end)
+	if (ctx->phys < nd_region->ndr_start ||
+	    (ctx->phys + ctx->cleared - 1) > ndr_end)
 		return 0;
 
 	sector = (ctx->phys - nd_region->ndr_start) / 512;