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authorAlexander Duyck <alexander.h.duyck@linux.intel.com>2018-10-10 23:38:41 (GMT)
committerDan Williams <dan.j.williams@intel.com>2018-10-12 15:38:53 (GMT)
commitd86d4d63d88861107d3bfc84be7294552231ecd0 (patch)
treec443baecbd8c87b53d4427a86329cb417c782857 /drivers/nvdimm
parentd11cf4a7321b538563b0ab30dc0d1f18f9c56226 (diff)
nvdimm: Sanity check labeloff
This patch adds validation for the labeloff field in the indexes. Reviewed-by: Toshi Kani <toshi.kani@hpe.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
-rw-r--r--drivers/nvdimm/label.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index 1d28cd6..1f58425 100644
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -183,6 +183,13 @@ static int __nd_label_validate(struct nvdimm_drvdata *ndd)
__le64_to_cpu(nsindex[i]->otheroff));
continue;
}
+ if (__le64_to_cpu(nsindex[i]->labeloff)
+ != 2 * sizeof_namespace_index(ndd)) {
+ dev_dbg(dev, "nsindex%d labeloff: %#llx invalid\n",
+ i, (unsigned long long)
+ __le64_to_cpu(nsindex[i]->labeloff));
+ continue;
+ }
size = __le64_to_cpu(nsindex[i]->mysize);
if (size > sizeof_namespace_index(ndd)

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