From nobody Wed Mar 19 17:18:51 2025 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 4ZHwtJ2v5Yz5qC9K for ; Wed, 19 Mar 2025 17:38:48 +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 4ZHwtH6XMyz3bds for ; Wed, 19 Mar 2025 17:38:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1742405927; 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=CzRiio7I8pybtbDClUParKcQBXu5wqxYA4Wm2k/rxBI=; b=vS+I1ab3A2OqnzXU2/0A6cAgBSv6ZLvJorc5159lcTOslnNG8sNsDmF2N19DW59DTs1dFF uoRHd8CkrlUpYlrPY6ms79UwGCNbYVN4OEhyKqp9NJf3hByuOKdJmu7N2ONo/D/qFHDwHP +VLnw2L4FPVwId5csdKRJO6rxaxXqNGcXOeEC29xwTNSsVL/F6av9vr8iotrCl/FyjIayQ oTLZ5b9GZ/AGoLOsITeGR/T1v88rVhsCdP6oyHJmCikr/gaNLmAHZqjBJnKNReM/VVA0lo a2pj4u5lxSwOjmECTxMi3vUtUQvL7Z+ThQjvivqCx8QCJ28K3F0+USQ6ldcN+A== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1742405927; a=rsa-sha256; cv=none; b=w3/DrhVc9Vu7FJ7DKndwJrP7jwxffR9tvDhRUMw8UfojxU6l6UqlnKpZtqePUI8u7oVst/ LkZN64XEchO0Dv703KqNaOGZehTZIoI4pSKKmnNeXPcRHgDtD/wWQYzkf9HJyur3BBTYJ1 lhjaTubpQoBxQtzTpr4frIN6VlG4/yUPccLuBJ+gW0pUYK/ISN8+RUOosQ6GkshiZI6Cg+ UvDqZ6jb0cWNpCvIIdM8yXNHmC/mxdYNnViHHJF3eggB+x2+fNF01Y7UpzKXD+Q6TUqSya GEHYu5/e4tHswUVI3+GHG/QFKEUO/le/lWrGwNODPMT5JEHbq+V0LvMqFHhIGA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1742405927; 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=CzRiio7I8pybtbDClUParKcQBXu5wqxYA4Wm2k/rxBI=; b=reBv/klwteFRGYpXlogy3cv+C5y0ozOz2QDD+jyVgfGQyGYhuHmr2Jy6QfJQQjDt8WTtUz agwdVNhjNzI4qAyV0N+5VdoQqf14z4sxnnkOUxCv7/mOlRMNBNU+p0D2JIxaMu8OF9xSbg 9KCRES0KdjJyFwJ0AqA4RdE7IdFk+weR/goVhzMikIqW6z5gCcgEpEtVaQlgGT53adkW0U KaJAIvZInftIrvT//WVAn9uzO2uo/1WujnFMLLw20SZ1W5ip9ZuCkq9emOgwzBTDONV0OZ L92tJ2m7aW5gIwBifPgW3Wi6d5H/4ARX9EYjuazvR6ABvLn90J0Q+jU1t2hsYg== 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 4ZHwtH65wWzDYr for ; Wed, 19 Mar 2025 17:38:47 +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 52JHckC3084247 for ; Wed, 19 Mar 2025 17:38:47 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 52JHIr4t024153 for bugs@FreeBSD.org; Wed, 19 Mar 2025 17:18:53 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 283747] kernel panic after telegraf service restart Date: Wed, 19 Mar 2025 17:18:51 +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: 14.1-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: glebius@FreeBSD.org 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-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" 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=3D283747 --- Comment #40 from Gleb Smirnoff --- Matthew, this is just a hypothesis, not a confident fix. Let's see how it goes. The guess is that telegraf would spawn lots of children for its purposes and sometimes leaks a zombie. Those zombies accumulate and each carry large number of credential reference counts. Given that cr_refs was extended to long, but credbatch refs was forgotten, and the latter accumulates counts from several crs, an overflow is possible. But the overflow will be trigge= red only when telegraf is killed and all leaked zombies are reaped. --=20 You are receiving this mail because: You are the assignee for the bug.=