From nobody Sat Jun 11 21:00:06 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 56A1F842BF0 for ; Sat, 11 Jun 2022 21:00:06 +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 4LL9Fd6qGFz572L for ; Sat, 11 Jun 2022 21:00:05 +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 C6A5314233 for ; Sat, 11 Jun 2022 21:00:05 +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 25BL05En036607 for ; Sat, 11 Jun 2022 21:00:05 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 25BL053x036606 for net@FreeBSD.org; Sat, 11 Jun 2022 21:00:05 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: Sat, 11 Jun 2022 21:00:06 +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=1654981206; 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=25OxzM+l9J9PngyvshC9SqbmLCKJFcDyMh/1JpciowU=; b=tjikUgOyZ7WnmCVybv0vISrokBeFRTO0enROau/0XjxfMpMub110NN9f/+kor/Eh0GY+2D PVjKweApcGDbcOlnl6/Xns94vtLIrQrB5Ub2F9HOjjvhatiRBGWbrySstZpHIBzj4YEhTy 96XcSUtFvQGJ9oSxezO5kZyEVCHiMRGdk9QQx8APPWSwCjKzvAH2U1/k1Ip0DyLfvB1bv6 mMV+A+AOkm6kTev0inYcz33OMglPnx1sR4nUuSE9jZO2kuwLdoDoleNGgcgOn4UQ2JPKLJ lWouIdUYWqxPjcWk6tRp8a/juCMOviKttpCh4edp1v+3Ug79l8oQoArDfEIdvA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1654981206; a=rsa-sha256; cv=none; b=CIP8RsifrtjEE+vxxgQl2lf+egis+nP111oTB90zPw1UXoBC5wM/BMSps100CCrQDYjJ86 D2Zvq0ZHDrzwg5Ulq8nuF33Hf+DIkDj8zyboPfhpq6Zh2XzK8fGXW4El6M6E+w/CMleAHg vA7b4/W2JREazWXS/olEujJvKFQWpoemydVBrc4k7Rj5ZXsJMgQuXQ5E4pIx4i8PLKFtoP +EsGAIzyJZORE9DG84vDujcv1ZFqLs9qxCkuz/EGuffL5D+geo8Ar+m6M6U/7hLGjCtCpn /O33A+zm97lXi1HJMul0brM5VeIcnML8rBjEgdLqt4hNhL1IxBTJdV+MrHO5Bw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D264257 --- Comment #35 from Richard Scheffenegger --- (In reply to iron.udjin from comment #31) Try the patch attached just now, which should apply cleanly. Note that if the hypothesis about snd_max getting infrequently incremented twice holds, you may observe more frequent panics in an INVARIANTS kernel - prior to these added checks, that oddity would not materially affect the tcp session. Only the new feature of SACK rescue retransmissions - which should also happen very infrequently at the same time as a FIN bit - exposed this. In that case, you may want to switch to a kernel without the INVARIANTS (wh= ich would still log those occurances, but not panic), or the default 13.1-RELEA= SE kernel with rfc6675_pipe disabled (to disable rescue retransmissions) for stable operation. --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=