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t=1705707569; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=snCPKhWz5iT0VVGFWUIMW8Z2VOebuj6omp6fgSQpOOM=; b=mNIo/SnBvQmpxyxy/rC6it7ty23+z6DT7RBXsKqOzzssguK58buOOvFIHYuioBtZHn/7w5 oonmHHdzjKlVbqlXH61IZL64jlZ8b22Txcth1TYrTDtVKFxU3VDAMN6IIqA45/790w4ER9 pGIfk2gO65bbw/bHXThpYh+J84F+cGo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1705707569; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=snCPKhWz5iT0VVGFWUIMW8Z2VOebuj6omp6fgSQpOOM=; b=L60njkGPgqkiHJOGMqFG415Kad2HjIGInbnikRS4/ESjqWo6PBXs54MtTwv4VTjjwWeiNu gkLi3jh/PzSlDKBQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1705707569; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=snCPKhWz5iT0VVGFWUIMW8Z2VOebuj6omp6fgSQpOOM=; b=mNIo/SnBvQmpxyxy/rC6it7ty23+z6DT7RBXsKqOzzssguK58buOOvFIHYuioBtZHn/7w5 oonmHHdzjKlVbqlXH61IZL64jlZ8b22Txcth1TYrTDtVKFxU3VDAMN6IIqA45/790w4ER9 pGIfk2gO65bbw/bHXThpYh+J84F+cGo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1705707569; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=snCPKhWz5iT0VVGFWUIMW8Z2VOebuj6omp6fgSQpOOM=; b=L60njkGPgqkiHJOGMqFG415Kad2HjIGInbnikRS4/ESjqWo6PBXs54MtTwv4VTjjwWeiNu gkLi3jh/PzSlDKBQ== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: Peter Xu Subject: [PATCH 2/5] migration: Take reference to migration state around bg_migration_vm_start_bh Date: Fri, 19 Jan 2024 20:39:19 -0300 Message-Id: <20240119233922.32588-3-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240119233922.32588-1-farosas@suse.de> References: <20240119233922.32588-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Bar: / Authentication-Results: smtp-out1.suse.de; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:1; envelope-from=farosas@suse.de; helo=smtp-out1.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @suse.de) X-ZM-MESSAGEID: 1705707622179100004 Content-Type: text/plain; charset="utf-8" We need to hold a reference to the current_migration object around async calls to avoid it been freed while still in use. Signed-off-by: Fabiano Rosas --- migration/migration.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/migration/migration.c b/migration/migration.c index cf17b68e57..b1213b59ce 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -3382,6 +3382,7 @@ static void bg_migration_vm_start_bh(void *opaque) =20 vm_resume(s->vm_old_state); migration_downtime_end(s); + object_unref(OBJECT(s)); } =20 /** @@ -3486,6 +3487,7 @@ static void *bg_migration_thread(void *opaque) * writes to virtio VQs memory which is in write-protected region. */ s->vm_start_bh =3D qemu_bh_new(bg_migration_vm_start_bh, s); + object_ref(OBJECT(s)); qemu_bh_schedule(s->vm_start_bh); =20 bql_unlock(); --=20 2.35.3