From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id 3ce6HMc6oWXujjkAWB0awg (envelope-from ) for ; Fri, 12 Jan 2024 08:12:39 -0500 Authentication-Results: simark.ca; dkim=pass (2048-bit key; unprotected) header.d=lists.lttng.org header.i=@lists.lttng.org header.a=rsa-sha256 header.s=default header.b=k6F4uLYN; dkim-atps=neutral Received: by simark.ca (Postfix, from userid 112) id 663391E0C2; Fri, 12 Jan 2024 08:12:39 -0500 (EST) Received: from lists.lttng.org (lists.lttng.org [167.114.26.123]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id 17A6D1E092 for ; Fri, 12 Jan 2024 08:12:37 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lists.lttng.org; s=default; t=1705065156; bh=wEAMJ+jVEb7ewHc9/jIKTxPj7Wvh9cbUf0F4aR2P4cw=; h=Date:To:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=k6F4uLYNJqh27MVY9yHdlvFI9UEESD+HUDf960jBYZesN41P8Mb1Rwibyc6+fhmOL lxH+pNk7WIJhcIa/uFyMHA7+0Gy8MdT9p6CT3m8HVeI2em6jltqDLjH1r5sTqc3Atq r91aECdJ7YFih7BtDR3AWBUzzfBOy2HNlfpxgvEyBSXojbvteLmaJq8hJpMYHiEOdN 4h9+nrcgkNLxGbtAtcKrAnOtp+w2Li8UQrjOiaFTfcmeCMuR2qkIDzEKXC/DgL7IPc WTqkCDhVryxamPsLozlmQT8UOWlZOuQ6bhbqJpkC/cqCREuaCqdZMt4l75TNf9+3KR cPB6cLdtFUkiA== Received: from lists-lttng01.efficios.com (localhost [IPv6:::1]) by lists.lttng.org (Postfix) with ESMTP id 4TBMQX2NcGz1LW8; Fri, 12 Jan 2024 08:12:36 -0500 (EST) Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by lists.lttng.org (Postfix) with ESMTPS id 4TBMQW0chbz1LRV for ; Fri, 12 Jan 2024 08:12:34 -0500 (EST) Received: by mail-lj1-x22d.google.com with SMTP id 38308e7fff4ca-2cd703e9014so48028661fa.1 for ; Fri, 12 Jan 2024 05:12:34 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705065153; x=1705669953; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=HEufFkV6NVmLT/A4Nsc6TLiTq3v+nhPQlbJEyIuxnUQ=; b=QQJ9dPl/hbbRAwCPEWw80bpTLXeeB+3wJMXt2aQ8nhDm/eNvJ672Z3b2+5kiKvb66z gSWnHxOBjHVpECpeuTPq0WmFDWU/6I4Ag9F/MvacTLOkTe+u6uM3Qb/eYUYJmAIgIFv5 dCUt0v87jKawmZMqcwb690TqQsajX34N0723yIg//U9FBDq9jDD1bWsmfzV9EkuBjQ3I ToW5dlQPkbNKszpAUBV5QoW612J3jgvbFE2nbPcabtFfrHbVuZJ+RdOQu3B2UPJpzAkV x5LJJbye6nsN0Ux/+xwCC6wtjUz1A3Mu0zgSSzAUFh5A6qzZ9dXOCuo4iwMYx465udLu HA6Q== X-Gm-Message-State: AOJu0YyOQULX+NVWlr9jq6CtsSttzW1ZXnJjhoHhbC8KHyMduCCg/l9Z TGkecEafbUvfjvZTYF1IzBGCQGb/a0DhFtDDpRX287gA X-Google-Smtp-Source: AGHT+IEHFqzTVgNbNqrLj6DGmujuI2brD0jtZA865cGh8ATn3y87hYo1F1DphNceXtS9TBTi8O90VL4N/5KDm1UdY+E= X-Received: by 2002:a2e:7d15:0:b0:2cc:6d60:d7cf with SMTP id y21-20020a2e7d15000000b002cc6d60d7cfmr762924ljc.58.1705065152864; Fri, 12 Jan 2024 05:12:32 -0800 (PST) MIME-Version: 1.0 Date: Fri, 12 Jan 2024 08:12:21 -0500 Message-ID: To: lttng-dev Subject: [lttng-dev] LTTng sessiond daemon Assertion `buf' failed and killed X-BeenThere: lttng-dev@lists.lttng.org X-Mailman-Version: 2.1.39 Precedence: list List-Id: LTTng development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Yonghong Yan via lttng-dev Reply-To: Yonghong Yan Content-Type: multipart/mixed; boundary="===============0309750082188625648==" Errors-To: lttng-dev-bounces@lists.lttng.org Sender: "lttng-dev" --===============0309750082188625648== Content-Type: multipart/alternative; boundary="000000000000c16740060ebf6aba" --000000000000c16740060ebf6aba Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I am not sure whether this is my setting problem or a bug with a more recent kernel. lttng-sessiond was killed when I tried to "enable event" after a session was created. See below part of the verbose output of the sessiond. It is observed on Ubuntu 22.04, kernel 6.5.0-14-generic #14~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC, lttng (LTTng Trace Control) 2.13.10 - Nordicit=C3=A9. The same version of LTTng works on another Ubuntu 22.04 machine, but with kernel 6.2.0-33-generic. Any suggestion on what I should try? Thank you Yonghong c:1016) DBG1 - 00:24:25.134138433 [Client management]: Getting session auto-20240112-002417 by name (in process_client_msg() at client.c:1133) DBG1 - 00:24:25.134148894 [Client management]: Creating UST session (in create_ust_session() at client.c:510) DBG1 - 00:24:25.134267958 [Client management]: Spawning consumerd (in spawn_consumerd() at client.c:204) DBG1 - 00:24:25.135155823 [Client management]: Waiting for consumer management thread to be ready (in wait_until_thread_is_ready() at manage-consumer.c:46) DBG1 - 00:24:25.135247552 [Consumer management]: Entering thread entry point (in launch_thread() at thread.c:65) DBG1 - 00:24:25.135293542 [Consumer management]: [thread] Manage consumer started (in thread_consumer_management() at manage-consumer.c:65) DBG1 - 00:24:25.135335776 [Client management]: Using 64-bit UST consumer at: /usr/lib/x86_64-linux-gnu/lttng/libexec/lttng-consumerd (in spawn_consumerd() at client.c:284) DBG1 - 00:24:25.240725883 [Consumer management]: Consumer command socket ready (fd: 61) (in thread_consumer_management() at manage-consumer.c:204) DBG1 - 00:24:25.240746802 [Consumer management]: Consumer metadata socket ready (fd: 62) (in thread_consumer_management() at manage-consumer.c:205) DBG1 - 00:24:25.240775318 [Consumer management]: Sending consumer initialization command (in consumer_init() at consumer.c:1791) DBG1 - 00:24:25.241066762 [Consumer management]: Marking consumer management thread as ready (in mark_thread_as_ready() at manage-consumer.c:31) DBG1 - 00:24:25.241100481 [Client management]: Consumer management thread is ready (in wait_until_thread_is_ready() at manage-consumer.c:48) DBG1 - 00:24:25.241138386 [Client management]: Setting relayd for session auto-20240112-002417 (in cmd_setup_relayd() at cmd.c:1004) lttng-sessiond: unix.c:185: lttcomm_recv_unix_sock: Assertion `buf' failed. Error: Events: No session daemon is available (channel channel0, session auto-20240112-002417) [1]+ Aborted (core dumped) lttng-sessiond --verbose DBG1 - 00:24:26.357769106 [Run-as worker]: run_as worker exiting (ret =3D 0= ) (in run_as_create_worker_no_lock() at runas.c:1526) --000000000000c16740060ebf6aba Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

I am not sure=C2=A0whether=C2=A0this is my setting= problem or a bug with a more=C2=A0recent=C2=A0kernel. lttng-sessiond was k= illed when I tried to "enable event" after a session was created.= See below part of the verbose output of the sessiond. It is observed on Ub= untu 22.04, kernel=C2=A06.5.0-14-generic #14~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC,=C2= =A0lttng = (LTTng Trace Control) 2.13.10 - Nordicit=C3=A9.=C2=A0


The same version of LTTng wo= rks on another Ubuntu 22.04 machine, but with kernel 6.2.0-33-generic. Any = suggestion on what I should try?


=

Thank you

Yonghong<= /font>



c:1016)

DBG1 - 00:24:25.134138433 = [Client management]: Getting session auto-20240112-002417 by name (in proce= ss_client_msg() at client.c:1133)

DBG1 - 00:24:25.134148894 [Client management]: Creating UST sessi= on (in create_ust_session() at client.c:510)

DBG1 - 00:24:25.134267958 [Client management]: Spawnin= g consumerd (in spawn_consumerd() at client.c:204)

DBG1 - 00:24:25.135155823 [Client management]: W= aiting for consumer management thread to be ready (in wait_until_thread_is_= ready() at manage-consumer.c:46)

DBG1 - 00:24:25.135247552 [Consumer management]: Entering thread e= ntry point (in launch_thread() at thread.c:65)

DBG1 - 00:24:25.135293542 [Consumer management]: [th= read] Manage consumer started (in thread_consumer_management() at manage-co= nsumer.c:65)

DBG1 - 00:2= 4:25.135335776 [Client management]: Using 64-bit UST consumer at: /usr/lib/= x86_64-linux-gnu/lttng/libexec/lttng-consumerd (in spawn_consumerd() at cli= ent.c:284)

DBG1 - 00:24:= 25.240725883 [Consumer management]: Consumer command socket ready (fd: 61) = (in thread_consumer_management() at manage-consumer.c:204)

DBG1 - 00:24:25.240746802 [Consumer mana= gement]: Consumer metadata socket ready (fd: 62) (in thread_consumer_manage= ment() at manage-consumer.c:205)

DBG1 - 00:24:25.240775318 [Consumer management]: Sending consumer = initialization command (in consumer_init() at consumer.c:1791)

DBG1 - 00:24:25.241066762 [Consumer = management]: Marking consumer management thread as ready (in mark_thread_as= _ready() at manage-consumer.c:31)

DBG1 - 00:24:25.241100481 [Client management]: Consumer managemen= t thread is ready (in wait_until_thread_is_ready() at manage-consumer.c:48)=

DBG1 - 00:24:25.2411383= 86 [Client management]: Setting relayd for session auto-20240112-002417 (in= cmd_setup_relayd() at cmd.c:1004)

lttng-sessiond: unix.c:185: lttcomm_recv_unix_sock: Assertion `b= uf' failed.

Error: E= vents: No session daemon is available (channel channel0, session auto-20240= 112-002417)

[1]+= =C2=A0 Aborted =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 (core dumped) lttng-sessiond --verbose

DBG1 - 00:24:26.357769106 [Run-as worker]: run_as worker exiti= ng (ret =3D 0) (in run_as_create_worker_no_lock() at runas.c:1526)


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