From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 DBE6D4DC520; Thu, 2 Jul 2026 16:29:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783009791; cv=none; b=TKEUU1wcdZFgHJtkClgTppEBg9ak4bIhGtjbrhYCFwECPi8RF0YP0HzTs+S0Cn8P3keRFjnttJDG+5pTwQ+IOYiwZ5Nm051wsohybHQtgx5KgmLS1STPlQnRN8f2lTSyrLm5PGTZrlUm8qeUv7BvNoDYRRDPm/HQCZYugXNADlQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783009791; c=relaxed/simple; bh=4lws3EXjvN3t1d/GwqiCEMa4XqQ0XBM6ZRNBjJCaDNM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QKVFpnUv2o9MT4W3aNKynhcDqlp5PXyn0MirFlYx3HEaaODppt2uo5Lnil8pZZvDUYcJy1gsxgIFq3tic5f4jhnKanrY45tSEQYXPrCbnVz4FiEWQeveHuAqEMod9MXxXf9fygLxYC3Si7tSu3L73N6iEuKxcF/MJAI+b2dmrck= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZZG8Z2nG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ZZG8Z2nG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2694D1F00A3A; Thu, 2 Jul 2026 16:29:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1783009788; bh=UFha0y4RGQTAqKKbO3pS4SIGI4F32yDrGGHm7Y6MXKM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZZG8Z2nGtc8ONtSKLNW0RvsRxjGFGlW4qbwEgVOypub+O9olp9kwfMT6E5iXyBdRM 4cWWWugTUFq6JAj0FEzA2cZT/mN5JeaLrPbnbrSmYLJEkt5i9Q44xdoFh6qQKH1ZEl 607t4hIjxILM35YxD3VfsYISntWXJaA2fPfEs0II= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kuniyuki Iwashima , Eric Dumazet , Paolo Abeni , Sasha Levin Subject: [PATCH 5.15 86/95] phonet: Pass ifindex to fill_addr(). Date: Thu, 2 Jul 2026 18:20:29 +0200 Message-ID: <20260702155111.016759227@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260702155109.196223802@linuxfoundation.org> References: <20260702155109.196223802@linuxfoundation.org> User-Agent: quilt/0.69 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kuniyuki Iwashima [ Upstream commit 08a9572be36819b5d9011604edfa5db6c5062a7a ] We will convert addr_doit() and getaddr_dumpit() to RCU, both of which call fill_addr(). The former will call phonet_address_notify() outside of RCU due to GFP_KERNEL, so dev will not be available in fill_addr(). Let's pass ifindex directly to fill_addr(). Signed-off-by: Kuniyuki Iwashima Reviewed-by: Eric Dumazet Signed-off-by: Paolo Abeni Stable-dep-of: 71de0177b28d ("net: phonet: free phonet_device after RCU grace period") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- net/phonet/pn_netlink.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) --- a/net/phonet/pn_netlink.c +++ b/net/phonet/pn_netlink.c @@ -19,7 +19,7 @@ /* Device address handling */ -static int fill_addr(struct sk_buff *skb, struct net_device *dev, u8 addr, +static int fill_addr(struct sk_buff *skb, u32 ifindex, u8 addr, u32 portid, u32 seq, int event); void phonet_address_notify(int event, struct net_device *dev, u8 addr) @@ -31,7 +31,8 @@ void phonet_address_notify(int event, st nla_total_size(1), GFP_KERNEL); if (skb == NULL) goto errout; - err = fill_addr(skb, dev, addr, 0, 0, event); + + err = fill_addr(skb, dev->ifindex, addr, 0, 0, event); if (err < 0) { WARN_ON(err == -EMSGSIZE); kfree_skb(skb); @@ -92,8 +93,8 @@ static int addr_doit(struct sk_buff *skb return err; } -static int fill_addr(struct sk_buff *skb, struct net_device *dev, u8 addr, - u32 portid, u32 seq, int event) +static int fill_addr(struct sk_buff *skb, u32 ifindex, u8 addr, + u32 portid, u32 seq, int event) { struct ifaddrmsg *ifm; struct nlmsghdr *nlh; @@ -107,7 +108,7 @@ static int fill_addr(struct sk_buff *skb ifm->ifa_prefixlen = 0; ifm->ifa_flags = IFA_F_PERMANENT; ifm->ifa_scope = RT_SCOPE_LINK; - ifm->ifa_index = dev->ifindex; + ifm->ifa_index = ifindex; if (nla_put_u8(skb, IFA_LOCAL, addr)) goto nla_put_failure; nlmsg_end(skb, nlh); @@ -140,7 +141,7 @@ static int getaddr_dumpit(struct sk_buff if (addr_idx++ < addr_start_idx) continue; - if (fill_addr(skb, pnd->netdev, addr << 2, + if (fill_addr(skb, pnd->netdev->ifindex, addr << 2, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWADDR) < 0) goto out;