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 2A7BC199BB for ; Mon, 9 Oct 2023 13:31:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="zAlRrguE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95182C433C9; Mon, 9 Oct 2023 13:31:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696858271; bh=9SXpDgbjuf1kBx7tGZeOhHDJs7zTnnf4mReOo+bCELI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zAlRrguEC9RHaXNH6DAO95kQz72ux9kWyZOneg64GWq/2WViHarvAzdGe/5OiPj7H T2XTmIa5kiO2HB++1zvSNxo8N1yx0hdDv6r5aPtktfscEi7Zg5inYVh6y9/7NCQwX5 cxwwd7g9OtGFbogioGgVhv20W0iX/Iz170Odztd0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Stefan Assmann , Jakub Kicinski , Aaron Brown , Tony Nguyen , Sasha Levin Subject: [PATCH 5.4 069/131] i40e: fix return of uninitialized aq_ret in i40e_set_vsi_promisc Date: Mon, 9 Oct 2023 15:01:49 +0200 Message-ID: <20231009130118.410314174@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231009130116.329529591@linuxfoundation.org> References: <20231009130116.329529591@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-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Stefan Assmann [ Upstream commit e1e1b5356eb48dce4307f5cae10e4d6d5bd3df74 ] drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c: In function ‘i40e_set_vsi_promisc’: drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c:1176:14: error: ‘aq_ret’ may be used uninitialized in this function [-Werror=maybe-uninitialized] i40e_status aq_ret; In case the code inside the if statement and the for loop does not get executed aq_ret will be uninitialized when the variable gets returned at the end of the function. Avoid this by changing num_vlans from int to u16, so aq_ret always gets set. Making this change in additional places as num_vlans should never be negative. Fixes: 37d318d7805f ("i40e: Remove scheduling while atomic possibility") Signed-off-by: Stefan Assmann Acked-by: Jakub Kicinski Tested-by: Aaron Brown Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 30abaf939a76f..37ce764ed3730 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -1125,7 +1125,7 @@ static int i40e_quiesce_vf_pci(struct i40e_vf *vf) static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) { struct i40e_mac_filter *f; - int num_vlans = 0, bkt; + u16 num_vlans = 0, bkt; hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) { if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID) @@ -1161,8 +1161,8 @@ static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) * * Called to get number of VLANs and VLAN list present in mac_filter_hash. **/ -static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, int *num_vlans, - s16 **vlan_list) +static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans, + s16 **vlan_list) { struct i40e_mac_filter *f; int i = 0; @@ -1196,7 +1196,7 @@ static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, int *num_vlans, **/ static i40e_status i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable, - bool unicast_enable, s16 *vl, int num_vlans) + bool unicast_enable, s16 *vl, u16 num_vlans) { i40e_status aq_ret, aq_tmp = 0; struct i40e_pf *pf = vf->pf; @@ -1295,7 +1295,7 @@ static i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf, i40e_status aq_ret = I40E_SUCCESS; struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi; - int num_vlans; + u16 num_vlans; s16 *vl; vsi = i40e_find_vsi_from_id(pf, vsi_id); -- 2.40.1