Received: by 2002:a25:f815:0:0:0:0:0 with SMTP id u21csp3497389ybd; Fri, 28 Jun 2019 09:36:04 -0700 (PDT) X-Google-Smtp-Source: APXvYqw8WSZXvFiQ87WjNF9vPK95QPVkKWEmB8k6mF6cA//jltjkpCRuahO9CXjc/WdqM3V8u4AR X-Received: by 2002:a17:902:d70a:: with SMTP id w10mr11983935ply.251.1561739764179; Fri, 28 Jun 2019 09:36:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1561739764; cv=none; d=google.com; s=arc-20160816; b=bdMquPEjgf6b2OVE0VBRYiRuFqH8AseWL1D/u4ujXhvIacwca3lVZSFv6wgQq8n+2+ f1HuNIr5Taf1znp1vYE5d4NOQj/yLX0Y0kYibzW5vxGGWpnH4ST9PWTG5kF9dzBD5+cE XAqaQxRFz33Gg6JkIUjaqjZJAxhWpK3oy3x4BNVf2l7EViYP3dZjMEUykM1Nrh4yqmob pyLQDsiKunklMIrYCl4T0gJCLuVbeDx6UhmRSIWv4fqieTM/gKMAFhyBhreclbwYqbf8 sG4tjL3IxgzcOUgovYKHc6COojJjgC53Z7XgrgTQq8IxBOdOpO819Lyev8Ujek6SnTLb WshA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :mime-version; bh=nwVfPs+vIRBiktClscrgxMmqQM1hwDrGpHuR2rGCVDY=; b=wzSBuiwn6Sv9NhlHQ2y2dc+k8wg6p6KrUOw17ynAGVYFWb3ipCvPlCIfQCsG4lTEwt SEIHMeTRkOFh0dOEJHLtI+ioFl8UkO95TPZp+waLX18BtDq4Ob23Pi0B7nKBN7hTUzax uq9olQgIH8gxt3gMU9Z72RrkMlxRz0nf+NLC+SE4R9oM5k1TgNzqZDq1FS3wWFtFGfIo xjOXdRlsRoX9rrNzLTyXM6lgvG5IQPzhkzgdjA+6qWdbTTytWdPRUx6foKlDzKtDrn8q 3VbD0WBRDcODlVuHAUToAHJktjx3Ct6BR3y4QZXombVuee4lu42P3FQlpBAHFABJnY0o V5Qw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id f9si2489781pgq.273.2019.06.28.09.35.46; Fri, 28 Jun 2019 09:36:04 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726829AbfF1Qfg (ORCPT + 99 others); Fri, 28 Jun 2019 12:35:36 -0400 Received: from mail-lf1-f44.google.com ([209.85.167.44]:43173 "EHLO mail-lf1-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726686AbfF1Qfg (ORCPT ); Fri, 28 Jun 2019 12:35:36 -0400 Received: by mail-lf1-f44.google.com with SMTP id j29so4350391lfk.10 for ; Fri, 28 Jun 2019 09:35:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=nwVfPs+vIRBiktClscrgxMmqQM1hwDrGpHuR2rGCVDY=; b=Kbjgvam7k4JTQVEWFK6078eWwykDOkjE2i7vOf4h9GfsX7N1BNJfK2V4vFKLSHLd2N MrN0eSZo7QpQRKM0L182TiVePNigDuor43/YDCid9cHzS1ZDVnfrGDebnLR0FfuNjDhD f7I6K/TUfGndC0dI9mjGg3kOJxYH0XnOfIxUFNMRQedE5CvnP4itSiqBIQeghVFvYXjT l52GF3RsnGHNKIuAVOFDLLU1D36AkCrh0rUt1sEUWP1OlpVWB4DPMMbImOPHHXTwddjA YAckVdv3nJTOtmFzuVK0jBFXXPkryvhPpCuKKXfI7hCOABCWEAodKETXZxymR0SEgkxP jXkA== X-Gm-Message-State: APjAAAVva1b+tEixTbPiA8YcfdCZwNfzMjLZDYAM+/Rf86oCwwCJfK4S F8SPZo60j1oxD1KgzZk5WXhKj+6ZCa77UbixP89siA== X-Received: by 2002:ac2:5a01:: with SMTP id q1mr5546835lfn.46.1561739734447; Fri, 28 Jun 2019 09:35:34 -0700 (PDT) MIME-Version: 1.0 From: Matteo Croce Date: Fri, 28 Jun 2019 18:34:58 +0200 Message-ID: Subject: net: check before dereferencing netdev_ops during busy poll To: stable@vger.kernel.org, Sasha Levin Cc: Greg Kroah-Hartman , Josh Elsasser , netdev , LKML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Is there any reason for this panic fix not being applied in stable? https://lore.kernel.org/netdev/20180313053248.13654-1-jelsasser@appneta.com/T/ It seems that linux 4.9.184 has the bug too. Regards, -- Matteo Croce per aspera ad upstream