From nobody Wed Jul 21 19:25:30 2021 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 15B2912BBD03 for ; Wed, 21 Jul 2021 19:25:30 +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 4GVQXT74Zcz4fyv for ; Wed, 21 Jul 2021 19:25:29 +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 DB34923D13 for ; Wed, 21 Jul 2021 19:25:29 +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 16LJPTRX001596 for ; Wed, 21 Jul 2021 19:25:29 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 16LJPTA9001595 for bugs@FreeBSD.org; Wed, 21 Jul 2021 19:25:29 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 257318] uma consumes memory when reattaching device Date: Wed, 21 Jul 2021 19:25:30 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: jcaplan@blackberry.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: 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=3D257318 Bug ID: 257318 Summary: uma consumes memory when reattaching device Product: Base System Version: 13.0-STABLE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: jcaplan@blackberry.com Overview -------- After patching in fixes for all identified leaks, detaching and re-attaching the same device consistently results in kmem allocation. currently open leaks: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256714 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D257218 Steps to Reproduce: ------------------- #!/bin/bash for i in {1..1000}; do echo $i devctl detach pci0:3:0:0 devctl attach pci0:3:0:0 sysctl vm.uma_kmem_total done Expected Result --------------- Perhaps after some initial warming stage, detaching and re-attaching the sa= me device should not increase the amount of memory consumed by uma. Actual Result ------------- Even after many thousands of iterations, uma_kmem_total continues to increa= se Build Date & Hardware --------------------- FreeBSD freebsd 13.0-RELEASE FreeBSD 13.0-RELEASE #7 releng/13.0-n244733-ea31abc261f-dirty: Wed Jul 21 14:53:10 UTC 2021 Additional Information ---------------------- Seem to keep hitting keg_alloc_slab from cache_alloc_retry --=20 You are receiving this mail because: You are the assignee for the bug.=