From nobody Mon Nov 18 16:03:58 2024 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4XsXVl4Zk9z5dGVR for ; Mon, 18 Nov 2024 16:03:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4XsXVl3YSsz4rSl for ; Mon, 18 Nov 2024 16:03:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1731945839; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=p7OX4Zi3tHIy5jaRcSlPlQdC8ws7wqPf5Z/6xcCYsnM=; b=mON19MOovwQrOzbu/h8zDTA0msVPvCugb33o+jGiU15mzhKNYLtWMr5FincXUXJ9libaDO XfER9WR1kLOOl24TS6u247P6Q2cMiWazT1PvR9Tu7i1ENTgEo9E9xs0msnMjv4d1kQCE54 RWL/1R2PJkS4TyqSIRE18uRLeemEBTXkV8WofgflTanLXSxrEt89ThHsXseKavSR/ArMNO JYPMBIEda6On1Ihk/b7qKukjBcuH7HmL8kepKmxWK09Lv4nkdD2NRnXswVakRIKH4lroys EuvMgfRVlXFvLq5CZGTqHc7l6GH+eM++4zjofuEaZqBJAOZoR0dPQBeXycx6Uw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1731945839; a=rsa-sha256; cv=none; b=n5HWSKdWf/MVgrkA2u6f6YbTvhPa8zoJEWXb0HOIbBdmcrPcEFSyctN22ufTcN/5cIvbah yTk+7AgHjFg2cjJBkWyQDnI5GqI1vLBFRfp9ELtH9vKGy7+LW1b33J7IYxMGTBJiQJdNGu OcxYzK8gu5CobIsc01uOjdmM9UtCtprncIAKeubYan9nXGI7GgzHWDgYD9lNqnidiw4u8f WxDYqxZls4/L7L2zSJHkFkbhf9gTqGycVjt+gi4KK+CYv21ommeinyG2e6NTAKFhWa5KMc 7x/Dd2RTFnwXE/PvjYy3I/MEEjH+bpMfPxQ59D5tUlv4d8QtVGOC+QvR2Srnbw== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4XsXVl39Svzn7Q for ; Mon, 18 Nov 2024 16:03:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 4AIG3xLs088795 for ; Mon, 18 Nov 2024 16:03:59 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 4AIG3xMM088794 for bugs@FreeBSD.org; Mon, 18 Nov 2024 16:03:59 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 282713] Process enters in STOP state and doesn't respond to any signal. Date: Mon, 18 Nov 2024 16:03:58 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: Unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rupeshpilania@gmail.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D282713 --- Comment #8 from Rupesh Pilania --- (In reply to Rupesh Pilania from comment #7) Looks like there are no process sharing locking mechanism was used. I suspe= ct somehow kern.ipc.umtx_max_robust count can impact something. As per libthr = it's default value is 1000. So created 1 process with 1000 robust mutexes and ra= n 2 instances of this. Looks like somehow it slowed down other process. Now tho= se processes are unkillable. But I am not seeing processes waiting in umtxqb.= =20 Using 8 CPUs 16 GB RAM Somehow process with 1000 threads with robust mutexes impacted other proces= ses. Also saw this in one of the other process which went in stop state. ./procstat -k 917 PID TID COMM TDNAME KSTACK 917 100288 process1 - mi_switch thread_suspend_switch ptracestop cursig ast doreti_ast Similar to this https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D200992 --=20 You are receiving this mail because: You are the assignee for the bug.=