{"id":2222708,"url":"http://patchwork.ozlabs.org/api/1.1/covers/2222708/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260413214549.926435-1-junjie.cao@intel.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260413214549.926435-1-junjie.cao@intel.com>","date":"2026-04-13T21:45:45","name":"[v3,0/4] io/channel: complete pread/pwrite_all API and fix multifd_file_recv_data","submitter":{"id":91537,"url":"http://patchwork.ozlabs.org/api/1.1/people/91537/?format=json","name":"Junjie Cao","email":"junjie.cao@intel.com"},"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260413214549.926435-1-junjie.cao@intel.com/mbox/","series":[{"id":499708,"url":"http://patchwork.ozlabs.org/api/1.1/series/499708/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499708","date":"2026-04-13T21:45:46","name":"io/channel: complete pread/pwrite_all API and fix multifd_file_recv_data","version":3,"mbox":"http://patchwork.ozlabs.org/series/499708/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2222708/comments/","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256\n header.s=Intel header.b=b4F/+Tdz;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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a=\"80885616\"","E=Sophos;i=\"6.23,177,1770624000\"; d=\"scan'208\";a=\"80885616\"","E=Sophos;i=\"6.23,177,1770624000\"; d=\"scan'208\";a=\"234770323\""],"X-ExtLoop1":"1","From":"Junjie Cao ","To":"qemu-devel@nongnu.org","Cc":"berrange@redhat.com, peterx@redhat.com, farosas@suse.de,\n junjie.cao@intel.com","Subject":"[PATCH v3 0/4] io/channel: complete pread/pwrite_all API and fix\n multifd_file_recv_data","Date":"Tue, 14 Apr 2026 05:45:45 +0800","Message-ID":"<20260413214549.926435-1-junjie.cao@intel.com>","X-Mailer":"git-send-email 2.43.0","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","Received-SPF":"pass client-ip=198.175.65.14;\n envelope-from=junjie.cao@intel.com;\n helo=mgamail.intel.com","X-Spam_score_int":"-29","X-Spam_score":"-3.0","X-Spam_bar":"---","X-Spam_report":"(-3.0 / 5.0 requ) BAYES_00=-1.9, DATE_IN_FUTURE_06_12=1.947,\n DKIMWL_WL_HIGH=-0.54, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1,\n DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"This series fixes two bugs in multifd_file_recv_data() and completes\nthe positioned read/write \"all\" API set for QIO channels.\n\nBug summary:\n - size_t variable storing ssize_t return: -1 wraps to SIZE_MAX\n - error_prepend() called without ERRP_GUARD(): NULL deref on short read\n\nChanges since v2:\n - Added qio_channel_pread_all_eof() to complete the API set (Daniel)\n - Added pwrite_all / pwritev_all variants (Daniel)\n - Reworked doc comments to match existing API style (Daniel)\n - Added Fixes tag, expanded _eof test coverage, added CONFIG_PREADV guard\n\nChanges since v1:\n - Used approach (b): add pread_all API instead of local retry loop\n (Daniel, Peter)\n\nv2: https://lore.kernel.org/qemu-devel/20260318140113.434-1-junjie.cao@intel.com/\nv1: https://lore.kernel.org/qemu-devel/20260316084618.52-1-junjie.cao@intel.com/\n\nJunjie Cao (4):\n io/channel: introduce qio_channel_pread{v,}_all{,_eof}()\n io/channel: introduce qio_channel_pwrite{v,}_all()\n migration/file: fix type mismatch and NULL deref in\n multifd_file_recv_data\n tests/unit: add pread/pwrite _all tests for io channel file\n\n include/io/channel.h | 133 +++++++++++++++++++\n io/channel.c | 139 ++++++++++++++++++++\n migration/file.c | 13 +-\n tests/unit/test-io-channel-file.c | 207 ++++++++++++++++++++++++++++++\n 4 files changed, 486 insertions(+), 6 deletions(-)"}