From nobody Sun Nov 06 21:28:59 2022 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 4N56tg2Scfz4h9r3 for ; Sun, 6 Nov 2022 21:28:59 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4N56tg0HpHz3QGq for ; Sun, 6 Nov 2022 21:28:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) 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 4N56tf6SZDzcGY for ; Sun, 6 Nov 2022 21:28:58 +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 2A6LSwKb062535 for ; Sun, 6 Nov 2022 21:28:58 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 2A6LSwnZ062534 for bugs@FreeBSD.org; Sun, 6 Nov 2022 21:28:58 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 255047] race bug with mount generating same fsid for different mount points Date: Sun, 06 Nov 2022 21:28:59 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: olivier@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-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 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1667770139; 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=LCeI7/S6KF8MsK3bptvIqCRk710zwO7eX2SVxeHQXw4=; b=bc2VMctNrsjjb2Lg4Foo7m0i172dQnHpA6FCMtXxjivZU5+tPIuiV+K7gDDeLJbPJ40y5n gFFuK87EMHQw9wQS62Ue4jbVIzB8ybGwiCLDNf3JAtcV+WzUKdDjY5Ha+a5m4onQyTNr6J tXLSPvmp/wWxsUH3A+LNKgONDjtaq+xwuN4i3Ln+uvfX9URv0f+I8C/2UtsUrZQhV809X1 T2KnNTu3REqAfR3IFo5BmaX4rG+UpTqxErWN4ypKfpvuB/a4/CYtywjSpuN0SvI1eVCd18 urj3XLdS2UCLXP+sFPljayHoGLT2zL7SA6C/6gMxlYRUL8IGceuFT1B8Tl36cQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1667770139; a=rsa-sha256; cv=none; b=xViW37Tqx+cILzyPw28gOV+mEiLpVGs8R46LKsVUKKTZdbQre21Cw7GHkK6a9f/cXRHK8A aJEdmBYdDFahoPkhAm1xr28TArXB011pr9H4FKi+c5UhzAJ9SmNUToeIQZa2FQqQ4bSj1r jDu93FhBSBSdTMKRLW4aoJWfRpoevzzW70Zh/IP2IpFQHslknlxt5sGXQbFw+T+d/K2sCH K+1t6gpq1VsO01xxgHVXXgv3t9D+bM+DhX3JkBbStj6fPOxuxlF4vibX2g+SiDOgrtuqax TEtHHV1BEcZwqVElQWAj9mBzThiHAXjWPUXzj+WmAD+yErAjRs+tdRoP5LmUeA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D255047 --- Comment #2 from Olivier Cochard --- Source of the problem in vfs_getnewfsid() in sys/kern/vfs_subr.c that has t= his comment: * Keep in mind that several mounts may be running in parallel. Starting * the search one past where the previous search terminated is both a * micro-optimization and a defense against returning the same fsid to * different mounts. This protection doesn't work here. --=20 You are receiving this mail because: You are the assignee for the bug.=