From nobody Fri Jan 13 17:39:18 2023 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 4NtpZG6wkyz2sVdM for ; Fri, 13 Jan 2023 17:39:18 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4NtpZG4ZVyz3KWM for ; Fri, 13 Jan 2023 17:39:18 +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=1673631558; 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=I72rQ67Z8kHj1YlQyGDxsTxhR5kGXfvejC0wOIwByFo=; b=rphYmweQJ9UEH9gPx5/wmQkMN0ma+laiFwW6KhJnybys7C92DTeEGu96NI/r/6YixV4vxJ XaijL5M7Q6Q9Tz0b6cexe+tIoYeVQ+YCszxic1y3s1BT9X41X4Xjj7R16rgY1zh2LhcLOl RriZnfZiy+pUvhtLcOHYpSCIm2dwvxoLbrjbIMoEKR57e4a1em8KwllmFLVLJtEpH2rHTK J58ZFnH185HlEUa25L2Np6b28UBW2tS6FaEvR9PTt2TbE6Srf6t4OtszcIa/Fqcsm13r5R IFuBpfGRAYAvMuT92yZTrv2mBmx53+w2CJVeSflKhyFWdven7DwpnyRTAKfR9w== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1673631558; a=rsa-sha256; cv=none; b=S/75gSJweg4TtvLHnRlH8apy0CgJOAxtUjpmblFzvtvu5RcaTL8fW4pMYddAw/Xx+Nxf3b iJAP6R6qiu7BN0P+QuwVpFYAyv81ODEEA+gxMywQizO3eOSxnjFVk2JXCllaLX9sed/6rm n/yF1dzi7uDXBFaNQhjpvq9Mxi6vqVI0Csqak65zKJsvrpcdqfiBWgRVGaulOOQwW9pLfy jdmn0sqeba5tkCA/UmE0AsYzKMaYcEX3bRC0ZZ75qSx2Jw500QVPGG9FiTwBxDfUczy5T4 DLGSEhogx8Jn4E+/LwPGy2RRZDuieBprMlGPClST62aleQm/jVrSGGl/ymFa0Q== 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 4NtpZG3cNwzG60 for ; Fri, 13 Jan 2023 17:39:18 +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 30DHdIw9019015 for ; Fri, 13 Jan 2023 17:39:18 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 30DHdIYA019014 for bugs@FreeBSD.org; Fri, 13 Jan 2023 17:39:18 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 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it Date: Fri, 13 Jan 2023 17:39:18 +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: 13.1-STABLE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: mhorne@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: cc 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 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D268897 Mitchell Horne changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mhorne@freebsd.org --- Comment #1 from Mitchell Horne --- (In reply to John F. Carr from comment #0) Hi, thanks for the report. I have a couple of questions. First, how easily is this crash reproduced? Does it trigger consistently ev= ery time, after the program has run a while, or very rarely? What is the threading model of the program? Does it consist of several long-lived threads or does it continuously spawn many threads with short lifespans? If you are able to share the referenced program, or another reproducer, that would go a long way to assist with isolating the issue. My guess as to how this assertion could occur is that one of the relevant fields in the thread are not being cleared/initialized properly, and re-use= of the thread structure results in an unintended call to pmc_capture_user_callchain(). --=20 You are receiving this mail because: You are the assignee for the bug.=