From nobody Fri Aug 7 01:02:02 2026 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 4hGQpg03jMz6nZYZ for ; Fri, 07 Aug 2026 01:02:03 +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 "YR1" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hGQpf6bNxz3kHq for ; Fri, 07 Aug 2026 01:02:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1786064522; 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=0+r7RzoFtJ/o+9eq3NDx27Ca1o6zglxwrqWFfGswGp0=; b=INmr+TwfdkPmPb03sw1754vJ1Bhpq6A2o+M287fFSuuo09ERRd0B1EKTEN9s5gxfaulMJs /4gZ6u/5i4TzW7AVSdkP7tlPYNpyc2fx042e7d8SyeGUq0uUWSpHy0snFg4exelo2raneS IvEAYacphTX4L8o34tlMUvVyWDykTVMC6FfrGOQrbgcGSNMHu1a0OQZqfO0Eko7N1LY3vF KJXfTrrZag8qh88/lAyHKdTJOZcxIgGf3IoRTuAR9EGPCTATCKixP8gzPSDRMOVUQ8C9sE MCviVW22v1QB2L09Fsn+JJO4uLXElEU/BzDU2GdpaImSaKXw7nT1fXqdEPAFrw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1786064522; a=rsa-sha256; cv=none; b=J6eI5yvoOLq1vqsY/RWfFGLg/CxAtscD6x5vaGbYxF9zt8jGFSYd+xSd/aC/lwi45Iew2O WweVHj0/938EYsZ3OXPysPkI0Er7POdh9CrLnPYV5Jr3hHUbZAsJp0pmF8IwI9Vp9hBLbo UL28kp24un+hjbsgQHt3bpqm431QfzQfGbDFHB1pqoCb/PKCEIpaHM/PbrQno2P3frHh+C IpS4PhltS9wMWuw+voWyR8rtogVXsM7gEHveSe8pWO0aMAJtJrJhjQn8zr+Ag5Z3rQU4T7 TlzpLL/itdycOEFjn8BcGxM5cHpFM1n65jIHK6aCltD5jYafvg5IEOlR9MdqvA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1786064522; 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=0+r7RzoFtJ/o+9eq3NDx27Ca1o6zglxwrqWFfGswGp0=; b=QzwMxRsjaT2aS/PFPWs+Wbd3zjC1UQFF2ZaxfvrjoTIvEWCTjUk182GiP0A2QVsf0uY5jh Q+En7y/sEl7Uovk4zdJChOBae3YLYUbkMx2Vq4JLHTPVBLJnku/X6p4DLmDwRzD3pz4xVG gR2UACARXEHlcKobEX30eunh/1TM9yiZ3wW3TprZ9udZkT8v7lxdvNa1sFXchbjgdIeLSF 0rs5L9zUlt2Axd1NQsT38skpfYpWAbn2O+qpmHDAmojaCYRLWxX6JzIlbl8yEfDUa85Qvf eH92EcgD0rRoZbLSC8bbUJSyzYD+m7QxF1sr13GQrLmVxMEE18As9JNRA6vBhw== 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 4hGQpf5d63zlnn for ; Fri, 07 Aug 2026 01:02:02 +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 6771229V022471 for ; Fri, 7 Aug 2026 01:02:02 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 6771228t022470 for net@FreeBSD.org; Fri, 7 Aug 2026 01:02:02 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 265714] igc(4) drops link under high traffic Date: Fri, 07 Aug 2026 01:02:02 +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: 13.1-STABLE X-Bugzilla-Keywords: IntelNetworking X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: kbowling@freebsd.org X-Bugzilla-Status: New 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-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" 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 List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D265714 --- Comment #65 from Kevin Bowling --- (In reply to Tomasz "CeDeROM" CEDRO from comment #64) I think the sysctl dump is post recovery? The only clue is missed_packets, maybe indicating an RX stall. It would help to capture two snapshots a few seconds apart before resetting while another host sends traffic: vmstat -i | grep igc, netstat -I igc0 -bd, and the sysctl dumps. Please also run these before, during, and after: pciconf -lc igc0 and the following script: /bin/sh <<'EOF' cap=3D$(pciconf -lc igc0 | sed -n 's/.*ecap 001e\[\([0-9A-Fa-f][0-9A-Fa-f]*\)\].*/\1/p') if [ -z "$cap" ]; then echo "L1PM capability 001e not found" exit 1 fi off=3D$((0x${cap} + 8)) set -- $(pciconf -r igc0 "$off") ctl1=3D$1 printf 'L1PM capability offset: 0x%s\n' "$cap" printf 'L1PM CTL1 offset: 0x%x\n' "$off" printf 'L1PM CTL1 value: 0x%s\n' "$ctl1" if [ $((0x${ctl1} & 0x4)) -eq 0 ]; then echo 'I226 ASPM L1.2 enable: CLEAR (workaround active)' else echo 'I226 ASPM L1.2 enable: SET (workaround absent/lost)' fi EOF --=20 You are receiving this mail because: You are the assignee for the bug.=