From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DBF4C433EF for ; Mon, 11 Apr 2022 15:36:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348066AbiDKPi6 (ORCPT ); Mon, 11 Apr 2022 11:38:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348070AbiDKPi5 (ORCPT ); Mon, 11 Apr 2022 11:38:57 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 758883A714 for ; Mon, 11 Apr 2022 08:36:40 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 12574610F4 for ; Mon, 11 Apr 2022 15:36:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 72252C385A3 for ; Mon, 11 Apr 2022 15:36:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649691399; bh=jMGrzrgRbMtlA1dYyNIYRVVghQuyP5u2wRW6MHRrEgo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=J2gray/G3E2nBFOcLx7nnobvlh2xMLULuyfOLOGofS7D+s/xI14CoO60SN38otGjG QkyJk5uA8BRH8uEK1v490lA4pk8Z7mk8S4vh/vdCNKy4d0ddZNfAlYEaqEwrrWrcLf gSVsXVLfSw7mudSn2b4EtWvMjBgdvOhdKpa/Do9i8OpZw0DBNbhSop2fNFiNoTCqBO kSDm8Lux2v0c7gSP7Nq4zjjUATPOUONNKazPAz0xt7JSHtcOm+l0cztrByHgYWIvrL ATkiCF9U5rLQN4Xbvuj6hk04dRNMeVtA1qgylHSxVTh1rHfZefB7/eE426Hb1oyNtt ZP6RolQsMC5fw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 57D68CC13AD; Mon, 11 Apr 2022 15:36:39 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-man@vger.kernel.org Subject: [Bug 215769] vfork() returns EINVAL after unshare(CLONE_NEWTIME) Date: Mon, 11 Apr 2022 15:36:38 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo documentation_man-pages@kernel-bugs.osdl.org X-Bugzilla-Product: Other X-Bugzilla-Component: Other X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: fweimer@redhat.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: documentation_man-pages@kernel-bugs.osdl.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://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D215769 --- Comment #14 from Florian Weimer (fweimer@redhat.com) --- I think the fundamental issue is that a time namespace needs a new data seg= ment for the vDSO, to store the changed office. So fully shared virtual memory j= ust is not possible with CLONE_NEWTIME, which is why vfork will not work in this situation. Maybe the effect of CLONE_NEWTIME should have been deferred to the next exe= cve? --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=