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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: -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 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) (identity @suse.de) X-ZM-MESSAGEID: 1722608889182116600 Content-Type: text/plain; charset="utf-8" From: Akihiko Odaki This fixes LeakSanitizer warnings. Signed-off-by: Akihiko Odaki Reviewed-by: Peter Xu Signed-off-by: Fabiano Rosas --- migration/savevm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/migration/savevm.c b/migration/savevm.c index deb57833f8..85958d7b09 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -874,6 +874,8 @@ int vmstate_replace_hack_for_ppc(VMStateIf *obj, int in= stance_id, =20 if (se) { savevm_state_handler_remove(se); + g_free(se->compat); + g_free(se); } return vmstate_register(obj, instance_id, vmsd, opaque); } --=20 2.35.3 From nobody Sun Nov 24 14:35:48 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=suse.de ARC-Seal: i=1; a=rsa-sha256; t=1722608850; cv=none; d=zohomail.com; s=zohoarc; b=iRtXlAEQybNTLWwq2Z0F4PwIW4ktI+lX7e4QkmEqOTWccCJECfD45x7/jj0AFg+/kWBWxdtDWt+zXi7U4/BpFY2tA6Uxw8HD5Bf+XioqnbF6rAbA6sCMW+NSXw+D42Mr3M8Y0wJzMSyGu29iC88oz/9Xkx6tc0OYpbonGYAN1Rc= ARC-Message-Signature: i=1; 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charset="utf-8" The QIOChannelFile object already has its reference decremented by g_autoptr. Trying to unref an extra time causes: ERROR:../qom/object.c:1241:object_unref: assertion failed: (obj->ref > 0) Fixes: a701c03dec ("migration: Drop reference to QIOChannel if file seeking= fails") Fixes: 6d3279655a ("migration: Fix file migration with fdset") Reported-by: Jim Fehlig Reviewed-by: Peter Xu Signed-off-by: Fabiano Rosas --- migration/file.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/migration/file.c b/migration/file.c index db870f2cf0..6451a21c86 100644 --- a/migration/file.c +++ b/migration/file.c @@ -112,7 +112,6 @@ void file_start_outgoing_migration(MigrationState *s, error_setg_errno(errp, errno, "failed to truncate migration file to offset %" P= RIx64, offset); - object_unref(OBJECT(fioc)); return; } =20 @@ -120,7 +119,6 @@ void file_start_outgoing_migration(MigrationState *s, =20 ioc =3D QIO_CHANNEL(fioc); if (offset && qio_channel_io_seek(ioc, offset, SEEK_SET, errp) < 0) { - object_unref(OBJECT(fioc)); return; } qio_channel_set_name(ioc, "migration-file-outgoing"); 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a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1722608802; 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=5peLPVnPJdFKgWkLmCkRk/7aqMYafpu+BVohwSAu31s=; b=GUNwV7gEKmEoSwN+e5pyhXw8dgSn9gJdjHfKKuaRNXNZtfYKPn8T28QPqKzvmwDCgwNf4t +VElzl8Prt51dqCw== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: Peter Xu , Richard Henderson , qemu-stable@nongnu.org, Jim Fehlig Subject: [PULL 3/3] migration/multifd: Fix multifd_send_setup cleanup when channel creation fails Date: Fri, 2 Aug 2024 11:26:33 -0300 Message-Id: <20240802142633.19249-4-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240802142633.19249-1-farosas@suse.de> References: <20240802142633.19249-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-2.01 / 50.00]; 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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: -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 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: 1722608851458116600 Content-Type: text/plain; charset="utf-8" When a channel fails to create, the code currently just returns. This is wrong for two reasons: 1) Channel n+1 will not get to initialize it's semaphores, leading to an assert when terminate_threads tries to post to it: qemu-system-x86_64: ../util/qemu-thread-posix.c:92: qemu_mutex_lock_impl: Assertion `mutex->initialized' failed. 2) (theoretical) If channel n-1 already started creation it will defeat the purpose of the channels_created logic which is in place to avoid migrate_fd_cleanup() to run while channels are still being created. This cannot really happen today because the current failure cases for multifd_new_send_channel_create() are all synchronous, resulting from qio_channel_file_new_path() getting a bad filename. This would hit all channels equally. But I don't want to set a trap for future people, so have all channels try to create (even if failing), and only fail after the channels_created semaphore has been posted. While here, remove the error_report_err call. There's one already at migrate_fd_cleanup later on. Cc: qemu-stable@nongnu.org Reported-by: Jim Fehlig Fixes: b7b03eb614 ("migration/multifd: Add outgoing QIOChannelFile support") Reviewed-by: Peter Xu Signed-off-by: Fabiano Rosas --- migration/multifd.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/migration/multifd.c b/migration/multifd.c index 0b4cbaddfe..552f9723c8 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -1156,7 +1156,6 @@ static bool multifd_new_send_channel_create(gpointer = opaque, Error **errp) bool multifd_send_setup(void) { MigrationState *s =3D migrate_get_current(); - Error *local_err =3D NULL; int thread_count, ret =3D 0; uint32_t page_count =3D MULTIFD_PACKET_SIZE / qemu_target_page_size(); bool use_packets =3D multifd_use_packets(); @@ -1177,6 +1176,7 @@ bool multifd_send_setup(void) =20 for (i =3D 0; i < thread_count; i++) { MultiFDSendParams *p =3D &multifd_send_state->params[i]; + Error *local_err =3D NULL; =20 qemu_sem_init(&p->sem, 0); qemu_sem_init(&p->sem_sync, 0); @@ -1196,7 +1196,8 @@ bool multifd_send_setup(void) p->write_flags =3D 0; =20 if (!multifd_new_send_channel_create(p, &local_err)) { - return false; + migrate_set_error(s, local_err); + ret =3D -1; } } =20 @@ -1209,24 +1210,27 @@ bool multifd_send_setup(void) qemu_sem_wait(&multifd_send_state->channels_created); } =20 + if (ret) { + goto err; + } + for (i =3D 0; i < thread_count; i++) { MultiFDSendParams *p =3D &multifd_send_state->params[i]; + Error *local_err =3D NULL; =20 ret =3D multifd_send_state->ops->send_setup(p, &local_err); if (ret) { - break; + migrate_set_error(s, local_err); + goto err; } } =20 - if (ret) { - migrate_set_error(s, local_err); - error_report_err(local_err); - migrate_set_state(&s->state, MIGRATION_STATUS_SETUP, - MIGRATION_STATUS_FAILED); - return false; - } - return true; + +err: + migrate_set_state(&s->state, MIGRATION_STATUS_SETUP, + MIGRATION_STATUS_FAILED); + return false; } =20 bool multifd_recv(void) --=20 2.35.3