From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 52C58C4332F for ; Fri, 10 Nov 2023 18:12:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344950AbjKJSMn (ORCPT ); Fri, 10 Nov 2023 13:12:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47840 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345712AbjKJSLT (ORCPT ); Fri, 10 Nov 2023 13:11:19 -0500 Received: from mail-pj1-f72.google.com (mail-pj1-f72.google.com [209.85.216.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F9C733663 for ; Fri, 10 Nov 2023 04:19:49 -0800 (PST) Received: by mail-pj1-f72.google.com with SMTP id 98e67ed59e1d1-280997b23eeso1942484a91.3 for ; Fri, 10 Nov 2023 04:19:49 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699618789; x=1700223589; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=gF17+2JZly3AcMbAyDkee2tAhsec0+/C5rjaQdUyKhU=; b=FFtEHgCNN5NAuMH0Q2Bbr6pxi0XTK4o2Y4Pzms0ujBzgGmT8Q33buMmtz4HO20xWTa UgiiMmqR+e69abeEsjU3drew+CBucXd5ch7F4iWW7x15CGpxDOQ+Sv410mFM7GcF1E4O oIw4LIodyvEjhNQhmA/zjaOWxBIpM3/2JRneT2nKFYFBnml3dLna4uLgv6Q2Fvx2QlsT iI1r7AKw7wMu2Edb2gvu8EBoGy5GPzpmfiD1L2BQ4+o5hwDi/Gv+NkmGo0drCdviD3cQ VMVo7k9Dwczsj1ehAsQ70ubD+vzphSEPth51n6rE7hqqxrgwh7CPXvKgwfw8sL2L6jGl KXUQ== X-Gm-Message-State: AOJu0Ywq8lSCxt27epkNGc4QUEGwIEjirfQDllyHoSjbh6S7ITrStipf J+DqZL+mtlsieLfQnLdgCkOE9s9JfX/FJY/jYG3/+9ySSXu33ag= X-Google-Smtp-Source: AGHT+IGtEyHjWUpeyLSiH55EcSF/8JtTMXUf+ywlvZLz6VAHQFS+9WszHXT/r+AxoQB2nKemjnbGjDQ/62Ey9ybY4nkSR+tOqHHY MIME-Version: 1.0 X-Received: by 2002:a17:90b:364c:b0:280:1b63:970 with SMTP id nh12-20020a17090b364c00b002801b630970mr1219294pjb.3.1699618789126; Fri, 10 Nov 2023 04:19:49 -0800 (PST) Date: Fri, 10 Nov 2023 04:19:48 -0800 In-Reply-To: <0000000000007323f20609b7cfbb@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002dfa3b0609cb56d6@google.com> Subject: Re: [syzbot] [PATCH] Test for aea6bf908d73 From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [PATCH] Test for aea6bf908d73 Author: eadavis@qq.com please test uaf in nfc_alloc_send_skb #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git aea6bf908d73 diff --git a/net/nfc/llcp_commands.c b/net/nfc/llcp_commands.c index e2680a3bef79..05b21ced9e1f 100644 --- a/net/nfc/llcp_commands.c +++ b/net/nfc/llcp_commands.c @@ -754,6 +754,7 @@ int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap, remaining_len = len; msg_ptr = msg_data; + bh_lock_sock(sock); do { remote_miu = sock->remote_miu > LLCP_MAX_MIU ? local->remote_miu : sock->remote_miu; @@ -784,6 +785,7 @@ int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap, remaining_len -= frag_len; msg_ptr += frag_len; } while (remaining_len > 0); + bh_unlock_sock(sock); kfree(msg_data); -- 2.25.1