linux-kernel - Re: [block] 52f019d43c: ndctl.test-libndctl.fail

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Date:   Fri, 05 Mar 2021 09:38:19 -0500
From:   Jeff Moyer <jmoyer@...hat.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        kernel test robot <oliver.sang@...el.com>,
        Jens Axboe <axboe@...nel.dk>,
        Oleksii Kurochko <olkuroch@...co.com>,
        Ming Lei <ming.lei@...hat.com>, Hannes Reinecke <hare@...e.de>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        lkp@...el.com, linux-nvdimm@...ts.01.org
Subject: Re: [block]  52f019d43c: ndctl.test-libndctl.fail

Christoph Hellwig <hch@....de> writes:

> Dan,
>
> can you make any sense of thos report?
>
> name='nfit_test'
> path='/lib/modules/5.11.0-rc5-00003-g52f019d43c22/extra/test/nfit_test.ko'
>> check_set_config_data: dimm: 0 read2 data miscompare: 0
>> check_set_config_data: dimm: 0x1 read2 data miscompare: 0
>> check_set_config_data: dimm: 0x100 read2 data miscompare: 0
>> check_set_config_data: dimm: 0x101 read2 data miscompare: 0
>> check_dax_autodetect: dax_ndns: 0x558a74d92f00 ndns: 0x558a74d92f00
>> check_dax_autodetect: dax_ndns: 0x558a74d91f40 ndns: 0x558a74d91f40
>> check_pfn_autodetect: pfn_ndns: 0x558a74d91f40 ndns: 0x558a74d91f40
>> check_pfn_autodetect: pfn_ndns: 0x558a74d8c5e0 ndns: 0x558a74d8c5e0
>> check_btt_autodetect: btt_ndns: 0x558a74d8c5e0 ndns: 0x558a74d8c5e0
>> check_btt_autodetect: btt_ndns: 0x558a74da1390 ndns: 0x558a74da1390
>> check_btt_autodetect: btt_ndns: 0x558a74d8c5e0 ndns: 0x558a74d8c5e0
>> check_btt_autodetect: btt_ndns: 0x558a74d91f40 ndns: 0x558a74d91f40
>> namespace7.0: failed to write /dev/pmem7
>> check_namespaces: namespace7.0 validate_bdev failed
>> ndctl-test1 failed: -6

This is from test/libndctl.c in the ndctl repo:

        fd = open(bdevpath, O_RDONLY);
        if (fd < 0) {
                fprintf(stderr, "%s: failed to open(%s, O_RDONLY)\n",
                                devname, bdevpath);
                return -ENXIO;
        }
...
        ro = 0;
        rc = ioctl(fd, BLKROSET, &ro);
        if (rc < 0) {
                fprintf(stderr, "%s: BLKROSET failed\n",
                                devname);
                rc = -errno;
                goto out;
        }

        close(fd);
        fd = open(bdevpath, O_RDWR|O_DIRECT);
...
        if (write(fd, buf, 4096) < 4096) {
                fprintf(stderr, "%s: failed to write %s\n",
                                devname, bdevpath);
                rc = -ENXIO;
                goto out;
        }

HTH,
Jeff