From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 22545F4FE for ; Mon, 23 Oct 2023 11:14:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="YnSqHpDa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8E742C433C9; Mon, 23 Oct 2023 11:14:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1698059675; bh=mrWc4PeitKIygLqqYT5L1avyL/2fy1VJQFdsl74/h40=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YnSqHpDaDGD1utRMgDofCTBT+KP4N4aASEJar4auO3X3qoqgH+4me2eoFwahoU6It uioSLgnILlxcxZz+xQa9cvkNFVpzWKokEXIcDE8zehbItJzJm53eQORyq1dGQJheV9 RTirKcv7zhk1/1HfEjrduNn9CuVhN6L79dUxTgqE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , Simon Horman , Jesse Brandeburg , Paolo Abeni , Sasha Levin Subject: [PATCH 4.19 15/98] ixgbe: fix crash with empty VF macvlan list Date: Mon, 23 Oct 2023 12:56:04 +0200 Message-ID: <20231023104814.120943940@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231023104813.580375891@linuxfoundation.org> References: <20231023104813.580375891@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter [ Upstream commit 7b5add9af567c44e12196107f0fe106e194034fd ] The adapter->vf_mvs.l list needs to be initialized even if the list is empty. Otherwise it will lead to crashes. Fixes: a1cbb15c1397 ("ixgbe: Add macvlan support for VF") Signed-off-by: Dan Carpenter Reviewed-by: Simon Horman Reviewed-by: Jesse Brandeburg Link: https://lore.kernel.org/r/ZSADNdIw8zFx1xw2@kadam Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c index 6055a4917ff69..9b463ef62be55 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c @@ -28,6 +28,9 @@ static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter, struct vf_macvlans *mv_list; int num_vf_macvlans, i; + /* Initialize list of VF macvlans */ + INIT_LIST_HEAD(&adapter->vf_mvs.l); + num_vf_macvlans = hw->mac.num_rar_entries - (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs); if (!num_vf_macvlans) @@ -36,8 +39,6 @@ static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter, mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans), GFP_KERNEL); if (mv_list) { - /* Initialize list of VF macvlans */ - INIT_LIST_HEAD(&adapter->vf_mvs.l); for (i = 0; i < num_vf_macvlans; i++) { mv_list[i].vf = -1; mv_list[i].free = true; -- 2.40.1