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commitf59b701b46upstream. KASAN reports a global-out-of-bounds access when running these nfit tests: clear.sh, pmem-errors.sh, pfn-meta-errors.sh, btt-errors.sh, daxdev-errors.sh, and inject-error.sh. [] BUG: KASAN: global-out-of-bounds in nfit_test_ctl+0x769f/0x7840 [nfit_test] [] Read of size 4 at addr ffffffffc03ea01c by task ndctl/1215 [] The buggy address belongs to the variable: [] handle+0x1c/0x1df4 [nfit_test] nfit_test_search_spa() uses handle[nvdimm->id] to retrieve a device handle and triggers a KASAN error when it reads past the end of the handle array. It should not be indexing the handle array at all. The correct device handle is stored in per-DIMM test data. Each DIMM has a struct nfit_mem that embeds a struct acpi_nfit_memdev that describes the NFIT device handle. Use that device handle here. Fixes:10246dc84d("acpi nfit: nfit_test supports translate SPA") Cc: stable@vger.kernel.org Signed-off-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com>> --- Link: https://patch.msgid.link/20251031234227.1303113-1-alison.schofield@intel.com Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>