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GET /api/1.1/patches/2224698/?format=api
HTTP 200 OK
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{
    "id": 2224698,
    "url": "http://patchwork.ozlabs.org/api/1.1/patches/2224698/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260417184742.293061-1-marcandre.lureau@redhat.com/",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api",
        "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": "<20260417184742.293061-1-marcandre.lureau@redhat.com>",
    "date": "2026-04-17T18:47:42",
    "name": "migration: fix abort when re-migrating after cancel during SETUP",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "c3d851d5ebf83f26055b4e9eb219ace51e11670b",
    "submitter": {
        "id": 66774,
        "url": "http://patchwork.ozlabs.org/api/1.1/people/66774/?format=api",
        "name": "Marc-André Lureau",
        "email": "marcandre.lureau@redhat.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260417184742.293061-1-marcandre.lureau@redhat.com/mbox/",
    "series": [
        {
            "id": 500390,
            "url": "http://patchwork.ozlabs.org/api/1.1/series/500390/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500390",
            "date": "2026-04-17T18:47:42",
            "name": "migration: fix abort when re-migrating after cancel during SETUP",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/500390/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2224698/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2224698/checks/",
    "tags": {},
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        "From": "marcandre.lureau@redhat.com",
        "To": "qemu-devel@nongnu.org",
        "Cc": "steven.sistare@oracle.com,\n =?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>,\n Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>",
        "Subject": "[PATCH] migration: fix abort when re-migrating after cancel during\n SETUP",
        "Date": "Fri, 17 Apr 2026 22:47:42 +0400",
        "Message-ID": "<20260417184742.293061-1-marcandre.lureau@redhat.com>",
        "MIME-Version": "1.0",
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        "Content-Transfer-Encoding": "8bit",
        "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.111",
        "Received-SPF": "pass client-ip=170.10.133.124;\n envelope-from=marcandre.lureau@redhat.com;\n helo=us-smtp-delivery-124.mimecast.com",
        "X-Spam_score_int": "-25",
        "X-Spam_score": "-2.6",
        "X-Spam_bar": "--",
        "X-Spam_report": "(-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no",
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        "Precedence": "list",
        "List-Id": "qemu development <qemu-devel.nongnu.org>",
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        "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org",
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    },
    "content": "From: Marc-André Lureau <marcandre.lureau@redhat.com>\n\nWhen a migration is cancelled during the early SETUP phase (before\nmigration_connect_outgoing() has set s->to_dst_file), migration_cancel()\ntakes a fast path that transitions the state from CANCELLING to\nCancelled without calling migration_cleanup(). This leaves the migration\nyank instance registered.\n\nA subsequent qmp_migrate() call passes the migration_is_running() guard\n(since CANCELLED is a terminal state) and then calls\nyank_register_instance(MIGRATION_YANK_INSTANCE, &error_abort), which\nfinds the stale entry and aborts with \"duplicate yank instance\".\n\n  #6  0x000056028b5e17fc in error_setg_internal\n      (errp=errp@entry=0x56028cc8cb18 <error_abort>, src=src@entry=0x56028ba87fa5 \"../util/yank.c\", line=line@entry=87, func=func@entry=0x56028bb77140 <__func__.5> \"yank_register_instance\", fmt=fmt@entry=0x56028ba87f8d \"duplicate yank instance\") at ../util/error.c:100\n  #7  0x000056028b601b2a in yank_register_instance (instance=instance@entry=0x7ffea0cf36b0, errp=0x56028cc8cb18 <error_abort>) at ../util/yank.c:87\n  #8  0x000056028b25221e in migrate_prepare (s=0x5602b0a7db90, resume=<optimized out>, errp=0x7ffea0cf3718) at ../migration/migration.c:2001\n  #9  qmp_migrate (uri=<optimized out>, has_channels=<optimized out>, channels=<optimized out>, has_resume=<optimized out>, resume=<optimized out>, errp=errp@entry=0x7ffea0cf3718) at ../migration/migration.c:2039\n  #10 0x000056028b5891be in qmp_marshal_migrate (args=<optimized out>, ret=<optimized out>, errp=0x7f63392e0ee0) at qapi/qapi-commands-migration.c:459\n\nAdd missing yank_unregister_instance. Alternatively, it seems\nmigration_cleanup() should be safe in this context too.\n\nFixes: 624e6e654e11 (\"migration: cpr-transfer mode\")\nSigned-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>\n---\n migration/migration.c | 1 +\n 1 file changed, 1 insertion(+)",
    "diff": "diff --git a/migration/migration.c b/migration/migration.c\nindex 5c9aaa6e58f..bbdd91ee7ee 100644\n--- a/migration/migration.c\n+++ b/migration/migration.c\n@@ -1477,6 +1477,7 @@ void migration_cancel(void)\n                           MIGRATION_STATUS_CANCELLED);\n         cpr_state_close();\n         cpr_transfer_source_destroy(s);\n+        yank_unregister_instance(MIGRATION_YANK_INSTANCE);\n     }\n }\n \n",
    "prefixes": []
}