From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm2-f13.google.com (mail-wm2-f13.google.com [74.125.225.141]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 281594A43FE for ; Tue, 6 Oct 2026 18:22:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.225.141 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791310953; cv=none; b=YL06H4tzwyMRL03GBLS2vInQCQVm07Fz4Aksnwq7/ORyvEI3Zo2A8KE4fA4/4/so2/Qakm5uD52OjfmKQFHUwoZfA2Ill2w/OBjOzGRXDNzwTOfAwNyZHB2EsvwKKNNDNDwudDxb5wviBBUYyxiCyZe9LcQSvt9UeesBqmK8zg0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791310953; c=relaxed/simple; bh=EPgKzaoJgstcSFA4vVpNd50KL37zoeGTt4wYgKNHB8U=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=YBTkod4sJPWl3vezviZQrv2iiX/mEKKHu8hJ6kNhJdUug4tyMwCO/ksD7mXiow0DHmZbbtr4oZPj4TqeaL14en7V0uHTmbRuIv37B5uuL8P1sSpkMezGJrbCKLQtRUi6qllvYK+SICWq55kk9xFClA8uqbMQx01Qv5uNbfxYQMQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=pyLovpcI; arc=none smtp.client-ip=74.125.225.141 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="pyLovpcI" Received: by mail-wm2-f13.google.com with SMTP id 5b1f17b1804b1-49fbc3db5fbso1790475e9.2 for ; Tue, 06 Oct 2026 11:22:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1791310949; x=1791915749; darn=vger.kernel.org; h=cc:to:content-transfer-encoding:content-type:mime-version :message-id:date:subject:from:from:to:cc:subject:date:message-id :reply-to:content-type; bh=9u9L32THq/S3e/dlOZfHwPUcMWY4OrkYhCdcRMC2Rs0=; b=pyLovpcIa+ToAq7K55Z1buUg8qfrxyASYf9uxX95+d3cy9+MUYhO1HIeBB1JrmaqjA uDtFz/XGdC8jrRBTgGUz/QEzINFIMtUR/A3K7xt1iT19hB29S8kTaQOZphQJQ1yCECch CSKqdPCh2h4WJedUngsVWzLYqnoOnjGt6vF3TxyMngmAhMi6UUAbC2OnW8z5g/U6+v9d I2VLWn3FTa6UJc0FlLRDpwMN5qCBBo8KbazKPvLuK/8uVwA1iSoddPakg9FGrDUmrHJi KciD+7zhRGy2fiLl+aDpDbJcObSgSkBsrLSyfDXrCxk6SaCASj/nsIxGk4t7+4NdT1Vz VwAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791310949; x=1791915749; h=cc:to:content-transfer-encoding:content-type:mime-version :message-id:date:subject:from:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to:content-type; bh=9u9L32THq/S3e/dlOZfHwPUcMWY4OrkYhCdcRMC2Rs0=; b=bVkNYWR/JZFEy3vmE3RVeJSLs7bhLIe5COUSQVRwmW/FBSWQGETKoOsZFwLzljbUI2 B+vQ3tYO5nE3WeonZEnUXqE4iO4DIecsXY0VMgSX1w0qw/YOnioBu0ok601YOHf356uS X3i5QgOcGOUfARQc2S5zxNTTbLyrFTYq2mL81zBtKzPMXKt+Q5h4M4bgO7fnxbqwB6tH fVxMs4hQ4vS5MtVTj/UDchiqA9R36kd8gpuOoCwAcE7evD0LA/Bj9N5TPFiZSG84WGhJ ByDpq3yQd3F4Jkdf+B0Y2UjuFW0Tacwg7v3QwnTnDMFoHXw9qvReOJRzEwskrb9IZPaU /1ww== X-Forwarded-Encrypted: i=1; AKwUvBwgpUp5xqBsL8+1PY7sgsyGBNANnylJQJ9a1Pe/bnKzTCH5DL2lp6spYaaA5xjZaBEJGVzsXIKR2TsF5oU=@vger.kernel.org X-Gm-Message-State: AFuF++mCn9GmII47MaUgILcAqCWi5AK392XQNOJm+XFOSfSdltvdJRzu IYQvYDY8uVzUYl8anBLla7wX+jahUQPSeFnPJmgjQxy1kK6XtgJ46aNJKeoE/sSxb74OTw== X-Gm-Gg: AYBFou22vPTc7KtbX1aXWwyYFW4hM5RgEVG2JeVheBS4a7KEvztzJgYPXUKvUqkUsd7 DI/3Is1FP/Pixk1gQNKH2gnRmR8ZA1u4ceHpzuqVKpd4Q5zslkamwpz40gTsgPjcEgLXFq8rwn6 iuE13GJtRpCc+SbGpu3zx5hFEEGIKppawoIsgdWo6D6dLaIrFy6qkfiBdCVwaAZtP++GFBOJQ6t fdXcFMn8yjDRo8z77gTzXM/7lSFOGzK5p4n2aB52sFiPlvhbDdomXjvvPkEYWV8QbQLvXzGccSd E5GKeVzhDuwJEwCIfIfEz6wXrL4L2hGf2s/BlwEjw3GPgUUtbtj4tc6ZP4BH05TjHVlvQUNwGIu fCKSNxV/+qN48WOdNdoHcLe4tGxdr6p0x/+X83y0LPwU+TXZE0Y3nsNFK74BKIJtTnIR8GG5KUb tX2bCG1AVH3UgesKfKJO6/hoa/7t1dv0xuKJxJ8ZtDHFS4YRn3XtlB X-Received: by 2002:a05:600c:6217:b0:4a0:1f9e:5f78 with SMTP id 5b1f17b1804b1-4a027452677mr236959715e9.0.1791310948864; Tue, 06 Oct 2026 11:22:28 -0700 (PDT) Received: from localhost ([2620:10d:c092:500::4:4701]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a17f4882d3sm4005345e9.4.2026.10.06.11.22.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Oct 2026 11:22:28 -0700 (PDT) From: Gustavo Luiz Duarte Subject: [PATCH net v2 0/2] netconsole: fix target enable race and configfs read locking Date: Tue, 06 Oct 2026 19:21:24 +0100 Message-Id: <20261006-netcons-fixes-v2-0-ca652d55fd4a@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/12NQQ6CMBBFr0JmbQ0US8CV9zAs2jrAGGlJpxIN4 e4WdOXy/3l/3gKMgZDhnC0QcCYm71KQhwzsoF2Pgm4pg8xllTdSCYfReseioxeyaEpdYnEqZWU UpM0UcD+kyRUSCu235Ke5o43bpw0biKMP7906Fzv8E9R/grkQuTBGdR0qrJpaX/pR0+No/Qjtu q4fOkmi1MEAAAA= X-Change-ID: 20260925-netcons-fixes-93a3e14326b5 To: Breno Leitao , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Stephen Hemminger Cc: Gustavo Luiz Duarte , netdev@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.15.2 While looking into the sashiko report about local_ip_show() and remote_ip_show() missing proper locking [1], I noticed a couple other places that need locking: patch 1/2 fixes a null-ptr-deref when enabling a target races against a NETDEV_UNREGISTER event, and patch 2/2 fixes a use-after-free when the local_mac_show() callback races against a NETDEV_UNREGISTER event. [1] https://netdev-ai.bots.linux.dev/sashiko/#/patchset/20260814-netcons_ipv6-v3-7-bc0915e8c75f@gmail.com Signed-off-by: Gustavo Luiz Duarte --- Changes in v2: - Resending for the 'net' tree. - Link to v1: https://patch.msgid.link/20260928-netcons-fixes-v1-0-bb5ffe5e698a@gmail.com To: Breno Leitao To: Andrew Lunn To: "David S. Miller" To: Eric Dumazet To: Jakub Kicinski To: Paolo Abeni To: Stephen Hemminger Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- Gustavo Luiz Duarte (2): netconsole: finish enabling the target before releasing RTNL netconsole: read np.dev under the RTNL in local_mac_show() drivers/net/netconsole.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) --- base-commit: d5a007b9b457c915ab1a53227e8939e4018aa97a change-id: 20260925-netcons-fixes-93a3e14326b5 Best regards, -- Gustavo Luiz Duarte