Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 01/29] nvdimm: Fix badblocks clear off-by-one error | Date | Tue, 5 Jul 2022 13:57:49 +0200 |
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From: Chris Ye <chris.ye@intel.com>
commit ef9102004a87cb3f8b26e000a095a261fc0467d3 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: 23f498448362 ("libnvdimm: rework region badblocks clearing") Cc: <stable@vger.kernel.org> Signed-off-by: Chris Ye <chris.ye@intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Link: https://lore.kernel.org/r/165404219489.2445897.9792886413715690399.stgit@dwillia2-xfh Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/nvdimm/bus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -192,8 +192,8 @@ static int nvdimm_clear_badblocks_region 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;
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