From nobody Tue Oct 5 15:12:08 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 7ADFE12BAFB2 for ; Tue, 5 Oct 2021 15:12:08 +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 4HP1K42vCzz3KpJ for ; Tue, 5 Oct 2021 15:12:08 +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 435646C48 for ; Tue, 5 Oct 2021 15:12:08 +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 195FC8A5044566 for ; Tue, 5 Oct 2021 15:12:08 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 195FC8TW044565 for bugs@FreeBSD.org; Tue, 5 Oct 2021 15:12:08 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 258932] panic: vm_page_free_prep: freeing mapped page Date: Tue, 05 Oct 2021 15:12:08 +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: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: markj@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: 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=3D258932 --- Comment #8 from Mark Johnston --- (In reply to Bryan Drewery from comment #7) Thanks. So it appears that the referencing pmap belongs to the parent proc= ess, another tmux process: db> show proc 1634 Process 1634 (tmux) at 0xfffff809dd32f000: state: NORMAL uid: 0 gids: 0, 0, 5, 65531, 65532 parent: pid 1 at 0xfffff801140cf538 ABI: FreeBSD ELF64 flag: 0x10000000 flag2: 0 arguments: tmux: server (/tmp/tmux-0/default) reaper: 0xfffff801140cf538 reapsubtree: 1 sigparent: 20 vmspace: 0xfffffe238e741000 (map 0xfffffe238e741000) (map.pmap 0xfffffe238e7410c0) (pmap 0xfffffe238e741120) threads: 1 101736 S select 0xfffff80a3a993740 tmux Switching to that thread, db> show pte 0x811be5000=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20 VA 0x0000000811be5000 pml4e 0x0000000338dad067 pdpe 0x0000000876895067 pde 0x000000077bde3067 pte 0x800000107d157425 So the PTE is indeed valid and the paddr matches that of the page in questi= on. Proc 1634 has a very very fragmented vm_map for some reason, tons of small = map entries. I need to let "show procvm" run for a while to find the map entry corresponding to 0x811be5000. --=20 You are receiving this mail because: You are the assignee for the bug.=