From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EF09B171095 for ; Wed, 3 Jul 2024 13:56:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720014964; cv=none; b=NIRbkGGLWf6DCEjLoyFJ/e1/4HbhhiPl1FrD/YJQb0Fv3fasK3v6UpWOptIF6djRtUpXjsC+uWDA3R/FU94AZHRWSSRoQmP1kLm8mq1iaqXj43emln6huMvqaJKveJXMZkVnsbvrSNkU6s1uvh84/jNixwtLKMCrrF9ucNLvdj0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720014964; c=relaxed/simple; bh=ogDzCFWf02n0NhfQtrOVZBGui4ufGppKy2clFYNagHs=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Ol+hGF+vKw9oN6jMATDqXO60gGgR6XS80gIPa/f2SKIVGoPbEtlQSb77eHkmaOuI04HAxfqZ2nk9fKkw1I152Cjqh//Pr+/SelAE294dOf5yWnwKK6UmaHzG/PUAgcEx4MLNmRey5wml5/Bv71FmLkLGWgGuvnZHKASTKgXcrwM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-7f439f51960so635109239f.1 for ; Wed, 03 Jul 2024 06:56:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720014962; x=1720619762; 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=hdq3tCuwQI7n1SBMovokzqtbZQ3gSeo6Hdp/WmawlMs=; b=BUw8q3ip0vWolsUUpjgIKBCgxyicEGCZcD41bNuAFNSBZRkaYnF65ritGoUjxbV1Nk afRJtFIEJ7A3N/O3AE2VchaVnETTu3kVc30kNEGwb1VKjZoa3XXlZs6euY5PELenr6Yy C+MsLbCMTqbw+BnnE2Ex1w0D4f5VdlY96tlZ2fBQb67ASBkXHNzJoZTQmY6neDqzNxFh x5JszZTO9GlC52eg4rGouqgiWYd+Kbk4z3yiG4vANMBh3AynigpB6kztvyOlJhw2u73x End4uv5UKsQ2HLMKb52bQ719FBgji9pj4kMGBCV9FVejH9OvDZX+wiNMNKhrajfRaOl0 57AQ== X-Forwarded-Encrypted: i=1; AJvYcCVZ4dSft/NqX0oKo97NP+OWvmGz1siEvR4lYb0/yxOwtu6r7GWZEp0wkmrB5QONcMigxceHu/VibSz6SUO3ZEC3McnBavy1 X-Gm-Message-State: AOJu0YzQfCmpFQLM5Cx/SnouS7pN7iTVdZep3K+4TzHDiaGz7Bj72RJR 04wHsPGqEm+dmvxA68z74ZlQ66nkqeUlFiZSGTMQhI66+FSMmq0PYm+ow9q9wn/EkMwQfS0QGte SiF469/CFDY0x7hycOd36wQOQ8TQOHMKOaYyEmDGTBIaAwZckE2KxsBI= X-Google-Smtp-Source: AGHT+IGdPgzclsT1Avf35z8PIjaFfO2Dyj4IQIm1vY9gWUxMTSKN/6uAP2iE+61ZcC0RGxTQBsOJJz0kS8TRV6r6BO7bSgXSnF9f Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:860c:b0:4bd:4861:d7f8 with SMTP id 8926c6da1cb9f-4bd4861db3dmr267983173.4.1720014962233; Wed, 03 Jul 2024 06:56:02 -0700 (PDT) Date: Wed, 03 Jul 2024 06:56:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d527f8061c5830eb@google.com> Subject: Re: [syzbot] [net?] KASAN: slab-use-after-free Write in l2tp_session_delete From: syzbot To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tparkin@katalix.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot tried to test the proposed patch but the build/boot failed: net/l2tp/l2tp_core.c:1301:24: error: use of undeclared identifier 'pos' Tested on: commit: 185d7211 net: xilinx: axienet: Enable multicast by def.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git kernel config: https://syzkaller.appspot.com/x/.config?x=e78fc116033e0ab7 dashboard link: https://syzkaller.appspot.com/bug?extid=c041b4ce3a6dfd1e63e2 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=16c5a181980000