From nobody Sat Oct 12 14:25:53 2024 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 4XQm4g5Jm7z5YTS8 for ; Sat, 12 Oct 2024 14:25:55 +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 "R11" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4XQm4g2mBKz4pdS for ; Sat, 12 Oct 2024 14:25:55 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1728743155; 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=tAUfpXfxJ6KjcFoHKCMSB8ML22H8tgFwOxk/hEKgz5Y=; b=Z8GlQDMI2g3K3Ne7mxbL5Ic/23Ba4FO6fOujtAQi3xXMCGfJvVFzpdf+B871/1p+vo0kSf b4OlOPdwtnW8uv3fq1g/HnN6jkicg/sVdzOtUZU5ABZnLfwYs26JWA7WYc2/3gl9Dv9gXt nD9zuTuTQvoen+7hJF1C4DoyP/AusdzVtDDDKADLUEQhq5a2zioVIiI/zety0DnNJ/emf4 rUXri5dAiJXtYAsm/AL/pT+FyW3FV6zbSoeCQvvSsaM6NgTilnVl8gCIDP+FgzFpcEoYYd qxsBZdy0GyPkxwwr2NZwQqVovh35em/4D8qO92bi6w1F++a56es+2+bxsb/ELQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1728743155; a=rsa-sha256; cv=none; b=qCXbxC/eQntrjGz0pf3zpjp8fC04zrmoisiOblIRvAe/+o2gQcv77y5GrQofxvoY8RSvAi XmdJJmZBaqwQxulK9guV7Vp3gnYXFqtvb5TBniNVHFyAA39TleafUMBRbxWde2cjFRqimt ynPkBy1LfCXnfEtAOjbOZnzf5ob0/9cNsqJ71ZsgI4oQDqTegSEeIw6/pQCEBEHQqw3PE3 r4tw1C6YZ1A0YIOe4bxrquM+SyYfkx9/92euzad1ChWgvi++iCZ/PEgzMpm4CdWsPZJUep KwBjrE2YowGvGYDPUIfTKazzXOV8UWDCeBRkTEHWz6rDHjY1VmI955dVYtssdw== 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 4XQm4g1P8wz1SSR for ; Sat, 12 Oct 2024 14:25:55 +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 49CEPtAY040275 for ; Sat, 12 Oct 2024 14:25:55 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 49CEPtxF040274 for net@FreeBSD.org; Sat, 12 Oct 2024 14:25:55 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 253888] exclusive sleep mutex vtnet0-rx0 (vtnet0-rx0) r = 0 (0xfffff800035d4780) locked Date: Sat, 12 Oct 2024 14:25:53 +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 Some People X-Bugzilla-Who: markj@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@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: 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 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253888 --- Comment #11 from Mark Johnston --- The problem with dropping the lock is that the receive path may schedule a taskqueue thread to do further receive processing. Then, the lock prevents= two threads from servicing the receive queue at once. Dropping the lock as in = our patches means that they might interleave, which can probably cause packet reordering issues. So, while the patch fixes the LOR, it probably introduc= es a different problem. --=20 You are receiving this mail because: You are the assignee for the bug.=