This is a note to let you know that I've just added the patch titled nvdimm: Fix badblocks clear off-by-one error to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: nvdimm-fix-badblocks-clear-off-by-one-error.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From ef9102004a87cb3f8b26e000a095a261fc0467d3 Mon Sep 17 00:00:00 2001 From: Chris Ye <chris.ye@xxxxxxxxx> Date: Tue, 31 May 2022 17:09:54 -0700 Subject: nvdimm: Fix badblocks clear off-by-one error From: Chris Ye <chris.ye@xxxxxxxxx> 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@xxxxxxxxxxxxxxx> Signed-off-by: Chris Ye <chris.ye@xxxxxxxxx> Reviewed-by: Vishal Verma <vishal.l.verma@xxxxxxxxx> Link: https://lore.kernel.org/r/165404219489.2445897.9792886413715690399.stgit@dwillia2-xfh Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/nvdimm/bus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -187,8 +187,8 @@ 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; Patches currently in stable-queue which might be from chris.ye@xxxxxxxxx are queue-5.4/nvdimm-fix-badblocks-clear-off-by-one-error.patch