From nobody Tue Jun 21 08:23:52 2022 X-Original-To: net@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 570F886C4B8 for ; Tue, 21 Jun 2022 08:23:53 +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 4LS00T0vzVz52gL for ; Tue, 21 Jun 2022 08:23:53 +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 009F466BE for ; Tue, 21 Jun 2022 08:23:53 +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 25L8NqjE084961 for ; Tue, 21 Jun 2022 08:23:52 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 25L8Nqk5084960 for net@FreeBSD.org; Tue, 21 Jun 2022 08:23:52 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: net@FreeBSD.org Subject: [Bug 264257] [tcp] Panic: Fatal trap 12: page fault while in kernel mode (if_io_tqg_4) - m_copydata ... at /usr/src/sys/kern/uipc_mbuf.c:659 Date: Tue, 21 Jun 2022 08:23:52 +0000 X-Bugzilla-Reason: AssignedTo CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.1-RELEASE X-Bugzilla-Keywords: crash, needs-qa X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rscheff@freebsd.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? maintainer-feedback? maintainer-feedback- maintainer-feedback? mfc-stable13? 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: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1655799833; 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=dULg3oNnAwRLfzFTAOq2mBbS1hbB5k7V6nAz00QyYPI=; b=AXpur5FvOk75Ra7JrgTKLycpG4ZrH4KQXLun44p3zyOxrshMEigj/E8QClTrCZ8tpFg+fw dve8n7PaqfIqpi/6pMI6YLCEtq2m96rMOVJ03RH99BfsKxu+2aeVKOrDv011AU196074/J LoBTLTWh4ngKYbN2F1DVhxU1k0VUsb6VYNBAsPP254NQEXOmfUu8X9MwId/KD2PVvwlUfp jMb1p3YJAtsNC0FeUcnojWf1E+jSscDppbz6eHFh25RMliZgLWHatAPRWv98i847x3jctY e8Iekh6Kgqjs+bx/qiHqMyzu2xM5du+sjxEkxX9zY1M/0h2MMCG0TI0qfSlBZQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1655799833; a=rsa-sha256; cv=none; b=eRIXqnI8yS/vcB6lpoRK+skmdLCEVBsPHQ/TILe5BKL22MXU9bEI5DIxw6yeCKNiAUlphr RorORCUz6HFNUI8gfxdL4yDQTBqpEnjAfqFemnm1KikPGq6e+tzVO0+a/Ikv31D/Jtnmou +CNQdLYuV7NeiEQWRcA9hNzP/w4T6CVO+W3nEpwZys3V0SkBwWVnQlWvl2PpIAJZsIIKg9 vjLP4TKtoD0wfrPGQxZCbe3QYuT7amS1sZiCSMqpVZN27aqCtf6M/950eawVOU3xu9m6Q2 2BEAZDaRCF4nskQYVI/DlFybJ7NMA7I1U0MhANAN6EB1ekBNcqOriJcJaIVqkA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D264257 --- Comment #70 from Richard Scheffenegger --- (In reply to Christos Chatzaras from comment #68) From the provided core: snd_una: 2568161219 snd_nxt: 2568161624 snd_max: 2568161624 snd_fack: 2568161624 (!!) so_snd: 403 snd_una + so_snd: 2568161622 *tp->sackhint->nexthole {start =3D 2568161219, end =3D 2568161623, rxmit =3D 2568161622, ... This indicates, that the remote client SACKed the 2nd FIN bit (which appare= ntly was sent at sequence number 2568161624, not 2568161623 as expected). The SACK for this 2nd FIN created a SACK scoreboard hole, which included the sequence number of the 1st FIN bit - which does not exist in the socket sendbuffer. Thus when trying to retransmit this non-existing byte, the panic happens. --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=