From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 C29DD1A5B91 for ; Sun, 8 Jun 2025 18:54:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749408878; cv=none; b=F7Ak0ZAqZ3A/F1SvWKgQhX+Or72982bgZEx/RLQQBRFLy3GnubmaxVwL+Oxy+hZqhnYm2GiOOFI6jOpnP0ptuJLX3p8cZmqEW6ycG/yMuqMeF8NDPMromIHujwdgc4aZvDlxC7lAtRZ7g970ZwdSQvAc7CvyyQyl0Ab11XpVqvQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749408878; c=relaxed/simple; bh=0e+ZPgS4d1SgXPwa7fKgOCMnZMTdfvr8q/YXFT4v6JY=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=VIG1zN/yVXUIB8Gz72lOxADNcq0mY0Ahhr6Yabr783sX+OVRo71SGudrinIVAPhlDgi5Qbiv28J0FDE5tvcClCZ5rXuJj9gp7Dw402N9d1jMzWrwMMl0/jpqZ1UOqv/Se6hDpcfpW1abDoUO6mIZxG+pBzA4VzXhUd/Th7G0FGY= 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=209.85.166.197 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-il1-f197.google.com with SMTP id e9e14a558f8ab-3ddd90ca184so7344715ab.0 for ; Sun, 08 Jun 2025 11:54:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749408876; x=1750013676; 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=hgsijAwwECKxtIfaX6vID5yInExtJ80pYGQbSecD5bU=; b=aa+sM7pQV/5Ho0AgsdV81CTFmOqC0Ih8fEo5v5soaSBkaNRPzYsQtwVCa6pwHtMKmr d3rDDRXDkqkWiSMEdsMdZNjhai9VeudBoXaF6rps1g+oNJ2NgK9xvyCOkT1r6h4zkJwo 2Weq8dF/q6gHyQvCFkUFCXkETn2ni0CKubPeSU/kqVpP/Oa1qdaJjr+5GOQZ3vmKu4q1 4aSCuVHDn/YvsX5h2GatmnuT1NKjZoHhYQaHOlhNuiuzskMvlQoqZuBL7jcy3gl5xn3k mYW/bo1FF1g0msMVARVstDCO0nSm9FlRHw4ADNLjOmNj1tsUhggZcTTxILiCF6i38T58 s3Aw== X-Gm-Message-State: AOJu0Yz6wQK0SIitObwOQDbCdPRnj/TvmfZBAkBfWhgMmHre7EyBMvgF HbISJ1Fn5V0Wgm17bvmHBg7qxxkPJT2CyKUt2Z7EG2Rz7GzBlMMkp9uZXfCvLP/7nvsLd47aQeW 32vGxDDJvpbjwAWGW1hQYXsx6Z4Vhn/hlVh/CKnSngZAAoYwi333G3Uy0/0c= X-Google-Smtp-Source: AGHT+IHf5dEhS9FMvjdPKtBV8GytrlcYVTCI2NIpJ8tGDRIK/eNSRgRaS0VwaIATVTJ/HlJah6BX1dNevklvOnswiYLBjrXNTnDX Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a0a:b0:3dd:cacd:8fe2 with SMTP id e9e14a558f8ab-3ddce44f9f0mr133195335ab.18.1749408875995; Sun, 08 Jun 2025 11:54:35 -0700 (PDT) Date: Sun, 08 Jun 2025 11:54:35 -0700 In-Reply-To: <67eaa688.050a0220.1547ec.014a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6845dc6b.050a0220.daf97.0af4.GAE@google.com> Subject: Re: [syzbot] Re: [syzbot] [bluetooth?] KASAN: vmalloc-out-of-bounds Read in hci_devcd_dump From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [bluetooth?] KASAN: vmalloc-out-of-bounds Read in hci_devcd_dump Author: ipravdin.official@gmail.com #syz test diff --git a/net/bluetooth/coredump.c b/net/bluetooth/coredump.c index 819eacb38762..720cb79adf96 100644 --- a/net/bluetooth/coredump.c +++ b/net/bluetooth/coredump.c @@ -249,15 +249,15 @@ static void hci_devcd_dump(struct hci_dev *hdev) size = hdev->dump.tail - hdev->dump.head; - /* Emit a devcoredump with the available data */ - dev_coredumpv(&hdev->dev, hdev->dump.head, size, GFP_KERNEL); - /* Send a copy to monitor as a diagnostic packet */ skb = bt_skb_alloc(size, GFP_ATOMIC); if (skb) { skb_put_data(skb, hdev->dump.head, size); hci_recv_diag(hdev, skb); } + + /* Emit a devcoredump with the available data */ + dev_coredumpv(&hdev->dev, hdev->dump.head, size, GFP_KERNEL); } Ivan Pravdin