On Tue, Feb 4, 2020 at 1:22 PM JH <[email protected]> wrote: > > On 2/4/20, Belisko Marek <[email protected]> wrote: > >> Well did you check build directory if it was really build (check > >> .config)? Or better try to build as module and install kernel-modules > >> and then you can modprobe it. > > Looking at code did you supply kernel arguments for test module: > > https://elixir.bootlin.com/linux/latest/source/drivers/mtd/tests/nandbiterrs.c#L42 > > Hmm, tried: > > # modprobe mtd_nandbiterrs > [ 695.090585] > [ 695.092143] ================================================== > [ 695.098317] mtd_nandbiterrs: MTD device: 0 > [ 695.114256] mtd_nandbiterrs: MTD device size 1048576, eraseblock=131072, > pag4 > [ 695.122867] mtd_nandbiterrs: Device uses 1 subpages of 2048 bytes > [ 695.129138] mtd_nandbiterrs: Using page=0, offset=0, eraseblock=0 > [ 695.144888] mtd_nandbiterrs: incremental biterrors test > [ 695.150594] mtd_nandbiterrs: write_page > [ 695.158629] mtd_nandbiterrs: rewrite page > [ 695.163488] mtd_nandbiterrs: read_page > [ 695.170790] mtd_nandbiterrs: verify_page > [ 695.174887] mtd_nandbiterrs: Successfully corrected 0 bit errors per > subpage > [ 695.182279] mtd_nandbiterrs: Inserted biterror @ 0/5 > [ 695.187387] mtd_nandbiterrs: rewrite page > [ 695.196243] mtd_nandbiterrs: read_page > [ 695.202608] mtd_nandbiterrs: Read reported 1 corrected bit errors > [ 695.209115] mtd_nandbiterrs: verify_page > [ 695.213192] mtd_nandbiterrs: Successfully corrected 1 bit errors per > subpage > [ 695.220361] mtd_nandbiterrs: Inserted biterror @ 0/2 > [ 695.225361] mtd_nandbiterrs: rewrite page > [ 695.235261] mtd_nandbiterrs: read_page > [ 695.240237] mtd_nandbiterrs: Read reported 2 corrected bit errors > [ 695.246384] mtd_nandbiterrs: verify_page > [ 695.250771] mtd_nandbiterrs: Successfully corrected 2 bit errors per > subpage > [ 695.257984] mtd_nandbiterrs: Inserted biterror @ 0/0 > [ 695.262984] mtd_nandbiterrs: rewrite page > [ 695.273646] mtd_nandbiterrs: read_page > [ 695.280000] mtd_nandbiterrs: Read reported 2 corrected bit errors > [ 695.286230] mtd_nandbiterrs: verify_page > [ 695.290489] mtd_nandbiterrs: Error: page offset 0, expected 25, got 00 > [ 695.297155] mtd_nandbiterrs: Error: page offset 282, expected 29, got 28 > [ 695.303897] mtd_nandbiterrs: Error: page offset 359, expected a7, got 27 > [ 695.310834] mtd_nandbiterrs: ECC failure, read data is incorrect despite > reas > modprobe: ERROR: could not insert 'mtd_nandbiterrs': Input/output error Well looks like some ecc issue (just blind guess). This is unfortunately out of scope of this forum. Pls ask on kernel mailing list. Thanks. > > Now I am in trouble, what is that error means? > > Thank you marek, > > - jh
BR, marek
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