From patchwork Mon Apr 29 19:14:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 13647572 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C6F3BC4345F for ; Mon, 29 Apr 2024 19:16:05 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s1WSu-00070r-MT; Mon, 29 Apr 2024 15:15:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSs-00070C-5L for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:02 -0400 Received: from forwardcorp1c.mail.yandex.net ([2a02:6b8:c03:500:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSn-0004wH-1Q for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:01 -0400 Received: from mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net [IPv6:2a02:6b8:c10:3196:0:640:fabe:0]) by forwardcorp1c.mail.yandex.net (Yandex) with ESMTPS id D0F1360BF7; Mon, 29 Apr 2024 22:14:53 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6b8:b081:b739::1:30]) by mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id hEWuLX0IkKo0-sCx6eplu; Mon, 29 Apr 2024 22:14:52 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1714418093; bh=PpRmhla0gjqmw2jJMXO6xK9xGKdDqisCCVnTI2yNty4=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=B56f1eMrdhYkE2Dtso1qX4wb4FTE845Agrd+UTPPGFHeakoPY8B9SImJMd6FdSFy9 P+KShY2SL9KuN/lTvlz/S7kinxL6DDwwz1TPcmos/yyJfRnfwrOTE/wAkIQe5mT7f/ H6lHWAp0iiYig2f1J/4IRtLFkuqAoWD9A6W5JnZs= Authentication-Results: mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: peterx@redhat.com, farosas@suse.de Cc: eblake@redhat.com, armbru@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru Subject: [PATCH v5 1/5] migration: move trace-point from migrate_fd_error to migrate_set_error Date: Mon, 29 Apr 2024 22:14:22 +0300 Message-Id: <20240429191426.2327225-2-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240429191426.2327225-1-vsementsov@yandex-team.ru> References: <20240429191426.2327225-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=2a02:6b8:c03:500:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1c.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, 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 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Cover more cases by trace-point. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Fabiano Rosas --- migration/migration.c | 4 +++- migration/trace-events | 2 +- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index b5af6b5105..2dc6a063e9 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1421,6 +1421,9 @@ static void migrate_fd_cleanup_bh(void *opaque) void migrate_set_error(MigrationState *s, const Error *error) { QEMU_LOCK_GUARD(&s->error_mutex); + + trace_migrate_error(error_get_pretty(error)); + if (!s->error) { s->error = error_copy(error); } @@ -1444,7 +1447,6 @@ static void migrate_error_free(MigrationState *s) static void migrate_fd_error(MigrationState *s, const Error *error) { - trace_migrate_fd_error(error_get_pretty(error)); assert(s->to_dst_file == NULL); migrate_set_state(&s->state, MIGRATION_STATUS_SETUP, MIGRATION_STATUS_FAILED); diff --git a/migration/trace-events b/migration/trace-events index f0e1cb80c7..d0c44c3853 100644 --- a/migration/trace-events +++ b/migration/trace-events @@ -152,7 +152,7 @@ multifd_set_outgoing_channel(void *ioc, const char *ioctype, const char *hostnam # migration.c migrate_set_state(const char *new_state) "new state %s" migrate_fd_cleanup(void) "" -migrate_fd_error(const char *error_desc) "error=%s" +migrate_error(const char *error_desc) "error=%s" migrate_fd_cancel(void) "" migrate_handle_rp_req_pages(const char *rbname, size_t start, size_t len) "in %s at 0x%zx len 0x%zx" migrate_pending_exact(uint64_t size, uint64_t pre, uint64_t post) "exact pending size %" PRIu64 " (pre = %" PRIu64 " post=%" PRIu64 ")" From patchwork Mon Apr 29 19:14:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 13647570 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E71AEC4345F for ; Mon, 29 Apr 2024 19:15:55 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s1WSz-00073t-N9; Mon, 29 Apr 2024 15:15:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSw-00071P-GQ for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:06 -0400 Received: from forwardcorp1c.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSo-0004xq-4e for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:06 -0400 Received: from mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net [IPv6:2a02:6b8:c10:3196:0:640:fabe:0]) by forwardcorp1c.mail.yandex.net (Yandex) with ESMTPS id BE79260C03; Mon, 29 Apr 2024 22:14:54 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6b8:b081:b739::1:30]) by mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id hEWuLX0IkKo0-PZlO9RVV; Mon, 29 Apr 2024 22:14:54 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1714418094; bh=B4lb0xAY50iptOjN0OivH1864Aq3iVwhsMVxS2PuLw4=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=lg+3OYspBrvaV0zPIkmTeCGOpH5yBG+9uvp07MRQhEKUjXbPfZUKP3uZPkpJ7ezE1 5U/zuHqRtssz8RWFgW0sorggNrgkNOOrBka35PUXmBqN9VI5JYnVxyH7gI1h3aOynY iq3e/5NtyhlZkoXNL3dVrQ7lAYdMIEYMGVJef3tI= Authentication-Results: mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: peterx@redhat.com, farosas@suse.de Cc: eblake@redhat.com, armbru@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru Subject: [PATCH v5 2/5] migration: process_incoming_migration_co(): complete cleanup on failure Date: Mon, 29 Apr 2024 22:14:23 +0300 Message-Id: <20240429191426.2327225-3-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240429191426.2327225-1-vsementsov@yandex-team.ru> References: <20240429191426.2327225-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1c.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, 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 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Make call to migration_incoming_state_destroy(), instead of doing only partial of it. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Fabiano Rosas Reviewed-by: Peter Xu --- migration/migration.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 2dc6a063e9..0d26db47f7 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -799,10 +799,7 @@ process_incoming_migration_co(void *opaque) fail: migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE, MIGRATION_STATUS_FAILED); - qemu_fclose(mis->from_src_file); - - multifd_recv_cleanup(); - compress_threads_load_cleanup(); + migration_incoming_state_destroy(); exit(EXIT_FAILURE); } From patchwork Mon Apr 29 19:14:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 13647573 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E4D16C4345F for ; Mon, 29 Apr 2024 19:16:08 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s1WT3-00074o-Cy; Mon, 29 Apr 2024 15:15:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WT0-000748-9Y for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:11 -0400 Received: from forwardcorp1b.mail.yandex.net ([2a02:6b8:c02:900:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSq-0004y6-0r for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:10 -0400 Received: from mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net [IPv6:2a02:6b8:c10:3196:0:640:fabe:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id BC10C60CC8; Mon, 29 Apr 2024 22:14:55 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6b8:b081:b739::1:30]) by mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id hEWuLX0IkKo0-jRXyXKDB; Mon, 29 Apr 2024 22:14:54 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1714418094; bh=EjG01w0ZewrQrMMGogXRmrmdHkTzWdbk9YqLV9bWgLM=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=rCk/jeQkkqnvHpzYKB/c4fh+8FRAtZiozAGZWTvNmYJp4UCDNsTvLyxcdkQVpeYva Xx+tOUdMs7HtZIXe2wsoKgiUPqfHdJq8GshBc8Zv2Vg2HigP/cmymFRhLGNPUl1guf vJYfz6QisK+MCdqbyW5apyFgiHXg66stsfnYrsSk= Authentication-Results: mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: peterx@redhat.com, farosas@suse.de Cc: eblake@redhat.com, armbru@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru Subject: [PATCH v5 3/5] migration: process_incoming_migration_co(): fix reporting s->error Date: Mon, 29 Apr 2024 22:14:24 +0300 Message-Id: <20240429191426.2327225-4-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240429191426.2327225-1-vsementsov@yandex-team.ru> References: <20240429191426.2327225-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, 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 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org It's bad idea to leave critical section with error object freed, but s->error still set, this theoretically may lead to use-after-free crash. Let's avoid it. Signed-off-by: Vladimir Sementsov-Ogievskiy --- migration/migration.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 0d26db47f7..58fd5819bc 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -732,9 +732,19 @@ static void process_incoming_migration_bh(void *opaque) migration_incoming_state_destroy(); } +static void migrate_error_free(MigrationState *s) +{ + QEMU_LOCK_GUARD(&s->error_mutex); + if (s->error) { + error_free(s->error); + s->error = NULL; + } +} + static void coroutine_fn process_incoming_migration_co(void *opaque) { + MigrationState *s = migrate_get_current(); MigrationIncomingState *mis = migration_incoming_get_current(); PostcopyState ps; int ret; @@ -779,11 +789,9 @@ process_incoming_migration_co(void *opaque) } if (ret < 0) { - MigrationState *s = migrate_get_current(); - if (migrate_has_error(s)) { WITH_QEMU_LOCK_GUARD(&s->error_mutex) { - error_report_err(s->error); + error_report_err(error_copy(s->error)); } } error_report("load of migration failed: %s", strerror(-ret)); @@ -801,6 +809,7 @@ fail: MIGRATION_STATUS_FAILED); migration_incoming_state_destroy(); + migrate_error_free(s); exit(EXIT_FAILURE); } @@ -1433,15 +1442,6 @@ bool migrate_has_error(MigrationState *s) return qatomic_read(&s->error); } -static void migrate_error_free(MigrationState *s) -{ - QEMU_LOCK_GUARD(&s->error_mutex); - if (s->error) { - error_free(s->error); - s->error = NULL; - } -} - static void migrate_fd_error(MigrationState *s, const Error *error) { assert(s->to_dst_file == NULL); From patchwork Mon Apr 29 19:14:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 13647584 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C7A39C4345F for ; Mon, 29 Apr 2024 19:16:29 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s1WSv-00070u-EV; Mon, 29 Apr 2024 15:15:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSt-00070V-Cd for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:03 -0400 Received: from forwardcorp1b.mail.yandex.net ([178.154.239.136]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSq-0004y9-0w for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:03 -0400 Received: from mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net [IPv6:2a02:6b8:c10:3196:0:640:fabe:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id BD35D60ADC; Mon, 29 Apr 2024 22:14:56 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6b8:b081:b739::1:30]) by mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id hEWuLX0IkKo0-wOu6pRVo; Mon, 29 Apr 2024 22:14:55 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1714418095; bh=QxQbf9epKNxtQRLR8F0lstGGWww3ZaUFKaQP1vuRZMo=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=qsHnhN4WsWYcB1IMfUxaK4z+jM7eoiP+Jry1b9JxLE1qH7XekbOEUw2kMCylr+EZJ s1j9LvaPrCeE4RhoosNSiBA8PS8gcul+j22/eQCBWIdgHuj0R3oZFCbAM04AXGndoZ JjQVbqP1c+oNSIWvKcbqKrFq77nS3Wwk6y5/ZTCo= Authentication-Results: mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: peterx@redhat.com, farosas@suse.de Cc: eblake@redhat.com, armbru@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru Subject: [PATCH v5 4/5] migration: process_incoming_migration_co(): rework error reporting Date: Mon, 29 Apr 2024 22:14:25 +0300 Message-Id: <20240429191426.2327225-5-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240429191426.2327225-1-vsementsov@yandex-team.ru> References: <20240429191426.2327225-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=178.154.239.136; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Unify error reporting in the function. This simplifies the following commit, which will not-exit-on-error behavior variant to the function. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Fabiano Rosas --- migration/migration.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 58fd5819bc..5489ff96df 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -748,11 +748,12 @@ process_incoming_migration_co(void *opaque) MigrationIncomingState *mis = migration_incoming_get_current(); PostcopyState ps; int ret; + Error *local_err = NULL; assert(mis->from_src_file); if (compress_threads_load_setup(mis->from_src_file)) { - error_report("Failed to setup decompress threads"); + error_setg(&local_err, "Failed to setup decompress threads"); goto fail; } @@ -789,16 +790,12 @@ process_incoming_migration_co(void *opaque) } if (ret < 0) { - if (migrate_has_error(s)) { - WITH_QEMU_LOCK_GUARD(&s->error_mutex) { - error_report_err(error_copy(s->error)); - } - } - error_report("load of migration failed: %s", strerror(-ret)); + error_setg(&local_err, "load of migration failed: %s", strerror(-ret)); goto fail; } if (colo_incoming_co() < 0) { + error_setg(&local_err, "colo incoming failed"); goto fail; } @@ -809,6 +806,12 @@ fail: MIGRATION_STATUS_FAILED); migration_incoming_state_destroy(); + if (migrate_has_error(s)) { + WITH_QEMU_LOCK_GUARD(&s->error_mutex) { + error_report_err(error_copy(s->error)); + } + } + error_report_err(local_err); migrate_error_free(s); exit(EXIT_FAILURE); } From patchwork Mon Apr 29 19:14:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 13647571 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6C772C25B10 for ; Mon, 29 Apr 2024 19:15:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s1WSw-00071I-HI; Mon, 29 Apr 2024 15:15:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSt-00070h-Qk for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:03 -0400 Received: from forwardcorp1c.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1WSq-0004yE-8l for qemu-devel@nongnu.org; Mon, 29 Apr 2024 15:15:03 -0400 Received: from mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net [IPv6:2a02:6b8:c10:3196:0:640:fabe:0]) by forwardcorp1c.mail.yandex.net (Yandex) with ESMTPS id D590F60C0C; Mon, 29 Apr 2024 22:14:57 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6b8:b081:b739::1:30]) by mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id hEWuLX0IkKo0-KAExgfkN; Mon, 29 Apr 2024 22:14:56 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1714418096; bh=gHgFh1PDVYi2qP8U++OuZZFa14ZVyUYuvwnB1fzwUZQ=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=u/K0gEogRiIdTyBL5pglA6yYKljRdOlXmuw8MMy2r0ms7fGOtmF3fwCHPlxv+wcyD eVaFUos8g+v+cK4L4ky4jYEGbGtBtCSZm7iEoKbZR4DGgNPVPwxlvaOA6ZAYdFQkej qrak3Lv5xD+8XGrRLTA51tY+CBUDpRpe2Qr1rMxE= Authentication-Results: mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: peterx@redhat.com, farosas@suse.de Cc: eblake@redhat.com, armbru@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru Subject: [PATCH v5 5/5] qapi: introduce exit-on-error parameter for migrate-incoming Date: Mon, 29 Apr 2024 22:14:26 +0300 Message-Id: <20240429191426.2327225-6-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240429191426.2327225-1-vsementsov@yandex-team.ru> References: <20240429191426.2327225-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1c.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, 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 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Now we do set MIGRATION_FAILED state, but don't give a chance to orchestrator to query migration state and get the error. Let's provide a possibility for QMP-based orchestrators to get an error like with outgoing migration. For hmp_migrate_incoming(), let's enable the new behavior: HMP is not and ABI, it's mostly intended to use by developer and it makes sense not to stop the process. For x-exit-preconfig, let's keep the old behavior: - it's called from init(), so here we want to keep current behavior by default - it does exit on error by itself as well So, if we want to change the behavior of x-exit-preconfig, it should be another patch. Signed-off-by: Vladimir Sementsov-Ogievskiy Acked-by: Markus Armbruster --- migration/migration-hmp-cmds.c | 2 +- migration/migration.c | 38 +++++++++++++++++++++++++++------- migration/migration.h | 3 +++ qapi/migration.json | 7 ++++++- system/vl.c | 3 ++- 5 files changed, 43 insertions(+), 10 deletions(-) diff --git a/migration/migration-hmp-cmds.c b/migration/migration-hmp-cmds.c index 7e96ae6ffd..23181bbee1 100644 --- a/migration/migration-hmp-cmds.c +++ b/migration/migration-hmp-cmds.c @@ -466,7 +466,7 @@ void hmp_migrate_incoming(Monitor *mon, const QDict *qdict) } QAPI_LIST_PREPEND(caps, g_steal_pointer(&channel)); - qmp_migrate_incoming(NULL, true, caps, &err); + qmp_migrate_incoming(NULL, true, caps, true, false, &err); qapi_free_MigrationChannelList(caps); end: diff --git a/migration/migration.c b/migration/migration.c index 5489ff96df..09f762c99e 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -72,6 +72,8 @@ #define NOTIFIER_ELEM_INIT(array, elem) \ [elem] = NOTIFIER_WITH_RETURN_LIST_INITIALIZER((array)[elem]) +#define INMIGRATE_DEFAULT_EXIT_ON_ERROR true + static NotifierWithReturnList migration_state_notifiers[] = { NOTIFIER_ELEM_INIT(migration_state_notifiers, MIG_MODE_NORMAL), NOTIFIER_ELEM_INIT(migration_state_notifiers, MIG_MODE_CPR_REBOOT), @@ -234,6 +236,8 @@ void migration_object_init(void) qemu_cond_init(¤t_incoming->page_request_cond); current_incoming->page_requested = g_tree_new(page_request_addr_cmp); + current_incoming->exit_on_error = INMIGRATE_DEFAULT_EXIT_ON_ERROR; + migration_object_check(current_migration, &error_fatal); blk_mig_init(); @@ -806,14 +810,19 @@ fail: MIGRATION_STATUS_FAILED); migration_incoming_state_destroy(); - if (migrate_has_error(s)) { - WITH_QEMU_LOCK_GUARD(&s->error_mutex) { - error_report_err(error_copy(s->error)); + if (mis->exit_on_error) { + if (migrate_has_error(s)) { + WITH_QEMU_LOCK_GUARD(&s->error_mutex) { + error_report_err(error_copy(s->error)); + } } + error_report_err(local_err); + migrate_error_free(s); + exit(EXIT_FAILURE); + } else { + migrate_set_error(s, local_err); + error_free(local_err); } - error_report_err(local_err); - migrate_error_free(s); - exit(EXIT_FAILURE); } /** @@ -1322,6 +1331,15 @@ static void fill_destination_migration_info(MigrationInfo *info) break; } info->status = mis->state; + + if (!info->error_desc) { + MigrationState *s = migrate_get_current(); + QEMU_LOCK_GUARD(&s->error_mutex); + + if (s->error) { + info->error_desc = g_strdup(error_get_pretty(s->error)); + } + } } MigrationInfo *qmp_query_migrate(Error **errp) @@ -1796,10 +1814,13 @@ void migrate_del_blocker(Error **reasonp) } void qmp_migrate_incoming(const char *uri, bool has_channels, - MigrationChannelList *channels, Error **errp) + MigrationChannelList *channels, + bool has_exit_on_error, bool exit_on_error, + Error **errp) { Error *local_err = NULL; static bool once = true; + MigrationIncomingState *mis = migration_incoming_get_current(); if (!once) { error_setg(errp, "The incoming migration has already been started"); @@ -1814,6 +1835,9 @@ void qmp_migrate_incoming(const char *uri, bool has_channels, return; } + mis->exit_on_error = + has_exit_on_error ? exit_on_error : INMIGRATE_DEFAULT_EXIT_ON_ERROR; + qemu_start_incoming_migration(uri, has_channels, channels, &local_err); if (local_err) { diff --git a/migration/migration.h b/migration/migration.h index 8045e39c26..95995a818e 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -227,6 +227,9 @@ struct MigrationIncomingState { * is needed as this field is updated serially. */ unsigned int switchover_ack_pending_num; + + /* Do exit on incoming migration failure */ + bool exit_on_error; }; MigrationIncomingState *migration_incoming_get_current(void); diff --git a/qapi/migration.json b/qapi/migration.json index 8c65b90328..9feed413b5 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -1837,6 +1837,10 @@ # @channels: list of migration stream channels with each stream in the # list connected to a destination interface endpoint. # +# @exit-on-error: Exit on incoming migration failure. Default true. +# When set to false, the failure triggers a MIGRATION event, and +# error details could be retrieved with query-migrate. (since 9.1) +# # Since: 2.3 # # Notes: @@ -1889,7 +1893,8 @@ ## { 'command': 'migrate-incoming', 'data': {'*uri': 'str', - '*channels': [ 'MigrationChannel' ] } } + '*channels': [ 'MigrationChannel' ], + '*exit-on-error': 'bool' } } ## # @xen-save-devices-state: diff --git a/system/vl.c b/system/vl.c index 7756eac81e..79cd498395 100644 --- a/system/vl.c +++ b/system/vl.c @@ -2723,7 +2723,8 @@ void qmp_x_exit_preconfig(Error **errp) if (incoming) { Error *local_err = NULL; if (strcmp(incoming, "defer") != 0) { - qmp_migrate_incoming(incoming, false, NULL, &local_err); + qmp_migrate_incoming(incoming, false, NULL, true, true, + &local_err); if (local_err) { error_reportf_err(local_err, "-incoming %s: ", incoming); exit(1);