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Bruce Fields" Cc: Chuck Lever , linux-nfs@vger.kernel.org, "J. Bruce Fields" Subject: 5.9 nfsd update breaks v4.2 copy_file_range Message-ID: <20200821015036.bn3yqiiuvunfxb42@xzhoux.usersys.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Hi Bruce, It's easy to reproduce by running multiple xfstests testcases on localhost NFS shares. These testcases are: generic/430 generic/431 generic/432 generic/433 generic/565 This reproduces only on NFSv4.2. Error log diff sample: --- /dev/fd/63 2020-08-09 22:46:02.771745606 -0400 +++ results/generic/431.out.bad 2020-08-09 22:46:02.546745248 -0400 @@ -1,15 +1,22 @@ QA output created by 431 Create the original file and then copy +cmp: EOF on /mnt/testdir/test-431/copy which is empty Original md5sums: ab56b4d92b40713acc5af89985d4b786 TEST_DIR/test-431/file -ab56b4d92b40713acc5af89985d4b786 TEST_DIR/test-431/copy +d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/copy Small copies from various points in the original file +cmp: EOF on /mnt/testdir/test-431/a which is empty +cmp: EOF on /mnt/testdir/test-431/b which is empty +cmp: EOF on /mnt/testdir/test-431/c which is empty +cmp: EOF on /mnt/testdir/test-431/d which is empty +cmp: EOF on /mnt/testdir/test-431/e which is empty +cmp: EOF on /mnt/testdir/test-431/f which is empty md5sums after small copies ab56b4d92b40713acc5af89985d4b786 TEST_DIR/test-431/file -0cc175b9c0f1b6a831c399e269772661 TEST_DIR/test-431/a -92eb5ffee6ae2fec3ad71c777531578f TEST_DIR/test-431/b -4a8a08f09d37b73795649038408b5f33 TEST_DIR/test-431/c -8277e0910d750195b448797616e091ad TEST_DIR/test-431/d -e1671797c52e15f763380b45e841ec32 TEST_DIR/test-431/e -2015eb238d706eceefc784742928054f TEST_DIR/test-431/f +d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/a +d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/b +d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/c +d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/d +d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/e +d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/f d41d8cd98f00b204e9800998ecf8427e TEST_DIR/test-431/g Bisecting shows the first "bad" commit is: commit 94415b06eb8aed13481646026dc995f04a3a534a Author: J. Bruce Fields Date: Tue Jul 7 09:28:05 2020 -0400 nfsd4: a client's own opens needn't prevent delegations I'm wondering if you're already aware of it, this simple report is for your info. Thanks. -- Murphy