From patchwork Wed Jan 17 01:19:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Marzinski X-Patchwork-Id: 13521366 X-Patchwork-Delegate: christophe.varoqui@free.fr Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0309D4687 for ; Wed, 17 Jan 2024 01:19:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705454360; cv=none; b=mgFjThmudd6PYoybW6CAjjMrQI5gaWMTTxpXVtsmPVSYTgkqSoymLJR20vXON+m4ZBMcg/WDI3mumsxl5cMLdjdOsvsGvFYqwcILisFW+l0eKLyowS98U//JtbUKcW9+QgGQiuIl79bCYSHZfmuflx60kS4c4aKB0l47uCgL5Do= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705454360; c=relaxed/simple; bh=vGbbTAMvzJvRQchGB3hnwfd8qIZiN3dtQNLXt3l4LUk=; h=DKIM-Signature:Received:X-MC-Unique:Received:Received:Received: Received:From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:X-Scanned-By:X-Mimecast-Spam-Score: X-Mimecast-Originator:Content-Transfer-Encoding:Content-Type; b=pk+/HHFNNkrCHvLZFbeGhGiOfG2+voRsIEEPKixCSsKlLlsWPd7W6Uw27cl7u3NHmQpKX2DRlbzTGm32sWfHyzg2HEK2WeyWxwZBeYLTrapHLJqz/jyhOZmEd/X7KkPKJOjrs7ifia4Ft+VGa65ZuSr2zKUDMC6dcnNugehrSgA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=OWjUSyOH; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="OWjUSyOH" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1705454357; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pMnQZG7wDXglE+rhv8J/VfMeFAl/3dR3jRBTo2QuoTE=; b=OWjUSyOH/Nk4Ee/7EzYlBQrfDGH3/85vokO1EdICC9unQPrNBdfz/bUVJ1lW4JOqc9W71/ T0CqS2BZfUatk6bFB/G0siok/kG+/NghgQ3Rp9142dKSA3VDXzFEOd1rW0Jd9UVXJgFGxU EFXJJOxv7QEW//vXEpxrkyQvGXcMSjY= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-340-aUfrSfMROnSuvaf1Qv9rng-1; Tue, 16 Jan 2024 20:19:14 -0500 X-MC-Unique: aUfrSfMROnSuvaf1Qv9rng-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 23A941C05B00; Wed, 17 Jan 2024 01:19:13 +0000 (UTC) Received: from bmarzins-01.fast.eng.rdu2.dc.redhat.com (bmarzins-01.fast.eng.rdu2.dc.redhat.com [10.6.23.12]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 1E2922026D6F; Wed, 17 Jan 2024 01:19:13 +0000 (UTC) Received: from bmarzins-01.fast.eng.rdu2.dc.redhat.com (localhost [127.0.0.1]) by bmarzins-01.fast.eng.rdu2.dc.redhat.com (8.17.1/8.17.1) with ESMTPS id 40H1JCK9018725 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Tue, 16 Jan 2024 20:19:13 -0500 Received: (from bmarzins@localhost) by bmarzins-01.fast.eng.rdu2.dc.redhat.com (8.17.1/8.17.1/Submit) id 40H1JC3V018724; Tue, 16 Jan 2024 20:19:12 -0500 From: Benjamin Marzinski To: device-mapper development Cc: Martin Wilck , Christophe Varoqui Subject: [PATCH v2 1/2] multipathd: fix null pointer dereference in uev_update_path Date: Tue, 16 Jan 2024 20:19:11 -0500 Message-ID: <20240117011912.18710-2-bmarzins@redhat.com> In-Reply-To: <20240117011912.18710-1-bmarzins@redhat.com> References: <20240117011912.18710-1-bmarzins@redhat.com> Precedence: bulk X-Mailing-List: dm-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com The Auto-resize code added a check that deferences pp->mpp without checking that it's non-NULL. Fix it. Fixes: 981b83ad1 ("multipathd: Add auto_resize config option") Signed-off-by: Benjamin Marzinski --- multipathd/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/multipathd/main.c b/multipathd/main.c index 74f6cd92..fbc3f8da 100644 --- a/multipathd/main.c +++ b/multipathd/main.c @@ -1630,7 +1630,7 @@ uev_update_path (struct uevent *uev, struct vectors * vecs) } } } - if (auto_resize != AUTO_RESIZE_NEVER && + if (auto_resize != AUTO_RESIZE_NEVER && mpp && !mpp->wait_for_udev) { struct pathgroup *pgp; struct path *pp2;