From nobody Tue Jun 9 16:02:15 2026 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 4gZYZb5hndz6gCwP for ; Tue, 09 Jun 2026 16:02:15 +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 "R13" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4gZYZb4jdYz4Dpw for ; Tue, 09 Jun 2026 16:02:15 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1781020935; 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=A1vPir9PIW33IFs7LOMdz6xn7VNVGA/Qrdhwp53GWVo=; b=cWKDm02nBIBurtX92HEUQzhoTQcBrx1DkSJY3XKBsGSi1f17XwUCyrHO+U8pTMhafmPVKY 2WCokPnczv/BMGrkqYK1USIBpibmEIr1RPAQ6hR+E3pJh/Qn5eWWkysNdQoSV/FgtZMlrn umjcwHIvGp/DFY5csrhc3wiLemKvGbqfc3zrCXnTDBdb+cAaOR0+gOFMdCK+XfJ85q3t1p UgUAkDNQ4+XOr3WBUiVsm+pLP3ITWSWlNJXbFj2rnAW7XWybNhFqnRjx00flQwjVbCBu1J 3RTRDJXlViyagtETRxTSvjZk+A6vZKKdeKBDLfJ96m42qf2OlWKGEJd89Jgqag== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1781020935; a=rsa-sha256; cv=none; b=JtKtu8dl0G+zZIJdYhRIBhtbZH9X/8hHjlHlzHq3yi1/OqbM21idGNbvAcHHO1X6nEFxNj qplLuCvcdKQsoMGO+PnvOdJXeo+0AMjG8SVq47LZSjYon+jK1atUiF0PevJRI3bZdfnGkQ PxzyipYMZTNSQKS2jfIgL9eXqdxe9pH+NejW+Q7pCfm6Jf59L7Zt6319NLF2k/pIn/S19q gDENmCDzU5yuEtmhwkCPYV4KOLVpYBwsD8XaILJakBlwx08u4MHx4LPzrCJDAbaKK6QztD WTd8OJwf1bkhV7/rtYc84XB2c0ANM34Ox6SfKufseQwZYNddEgedVNEtTOlpGA== 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=1781020935; 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=A1vPir9PIW33IFs7LOMdz6xn7VNVGA/Qrdhwp53GWVo=; b=PMRqgScJy3c24wM2ahkgY2VN7SWcwXm2DlibLxU2dsQxrSiJC9PTrxk3pVVHFEyhncPWo/ hEbALmKtIYjYD4WqBdz6tb7K9bDG/wSAvlvZcosPtXA+u29KHkP3PQ/f646HQHRR/i6Wj1 JykBfRJJu4vMZeICgx6MxeFf4siDtxgsi29Mkg7VrXgm+6lkUZeORqj4oyVaiOhNBt4cAn nqFy8+d4w2Y6/exYcgadWmlRLPTddMsWKW5JI4IXlECxvih6ShUEN5tKZ1tBGuDpKPVkpo LmWBWT42pjzrw6X+31LTRPgP/zV9+mCzyNkdufJXnGBCGgYeMw/6K/nS89bHJw== 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 4gZYZb4K74zhXR for ; Tue, 09 Jun 2026 16:02:15 +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 659G2Fob014911 for ; Tue, 9 Jun 2026 16:02:15 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 659G2FZt014891 for bugs@FreeBSD.org; Tue, 9 Jun 2026 16:02:15 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 291294] panic during shutdown in callout_process Date: Tue, 09 Jun 2026 16:02:15 +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: 16.0-CURRENT X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rlibby@freebsd.org X-Bugzilla-Status: New 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 List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291294 --- Comment #2 from Ryan Libby --- Does it reproduce regularly? Here are a few debugging thoughts: - Report kernel config and loaded modules. - See if there's anything interesting in show msgbuf shortly before panic. - Enable ktr(4) and KTR_CALLOUT and examine and report ddb show ktr. - Use dtrace, for example maybe dump the stack and callout pointer upon callout_reset_sbt_on. --=20 You are receiving this mail because: You are the assignee for the bug.=