From nobody Sat Feb 7 18:15:27 2026 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 D63C621D00A for ; Thu, 6 Nov 2025 07:50:02 +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=1762415404; cv=none; b=GCOfJ6AxpxadwzSzRedpGcmwVs9SmXGQUITmzFh4sTeXMOJbmlQ/TBsNZCYeY+/fvhAP88MFX89G406rvMyArN8DpAGbwiFWYrfnP0lMSieqth936sFfFBsDRcw05bFfZ+QVXT/CXwh3BBiNrF3Dy05li6MNWqdFiMreCqNysbM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762415404; c=relaxed/simple; bh=2JBuRJt65OA7w2UwrRzCurhhC637sy1rWyTxMxoTCZg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=HSgVA5uVlEysLPrf57VRy/4FhlYutcXIYPqA8EJeAppKVN/us51FudcPC6BR2ug1kWRkWcpihajkpPrbB7qjmPwAr1AW/NYvRj8vz+mJiDMJ4crpbuF4lyKMvz4TXIYc5gjfQYNrLqZmNxEijNGXahel6iDTmhdIi/UwMGyvrHE= 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-93e86696b5fso5034839f.1 for ; Wed, 05 Nov 2025 23:50:02 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762415402; x=1763020202; 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=v5hibFlMlPaKRCFQgOq3+yUJhwCK2DdBwiNINaxH9O0=; b=JrFMk3S5iFB7u+xQMxt3cB2/TD0BuSOhMBVtVRVEG9yHSt8seG1h4e/iJBrWBfjWaW VuZGBNBTAVqKehM5m6gR9UHMbWMuxpF60zgPpxXNyb58MIflf3NaLB/V6KNog2kV82VF aQQKRxL3+RPV4Vz1CPGIN3rzXbbVo8Cy1wD31cZSG8Qu5nKE4IFE/OtPc3HVFMLtQe2G 1n8GPhGz01IQt09dxlArHkZtXEDv6Kq14VeKrjvg7ubxfayQWOah1veR2nT5uHazoUzi m2ELo5ZxQsWjbk9aD5bp6UyRd7cKlLXeb00kaN3nXFg6lt0Z2ti/aswvxpK66gImahQ2 aZgg== X-Gm-Message-State: AOJu0YxaaM7ZunAtsbOVGTqnDDLS9tEUKYdnefvSF6xtjuBUc9frFkMQ 9wEExRD1oLEAhjPbxRYjgxKJWJBYnGRW33Z/qKlV7CApGSgmi4N+W/TVE7Uk7wzxjva5HSGnAeC XdnSShzZbCEwcoVb0cYIKj/utIAbeYOBt/7cH9XyyoAcejEKgQ3StcJg6em4= X-Google-Smtp-Source: AGHT+IFuDfyAeA9pgvVdN2NS2EEvow6cXnms11VY7LqoGZLLHw7ql3hO9671D1YjjMaPgSvqrEb0QiUXyCCuvxqlfIp9rqlIkJeN Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:1611:b0:948:3f60:a620 with SMTP id ca18e2360f4ac-94869ca1af3mr983946039f.1.1762415402079; Wed, 05 Nov 2025 23:50:02 -0800 (PST) Date: Wed, 05 Nov 2025 23:50:02 -0800 In-Reply-To: <690b6b46.050a0220.3d0d33.0054.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <690c532a.050a0220.1e8caa.00b9.GAE@google.com> Subject: Forwarded: Re: [syzbot] [sound?] [usb?] KASAN: slab-out-of-bounds Write in copy_to_urb From: syzbot To: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Re: [syzbot] [sound?] [usb?] KASAN: slab-out-of-bounds Write in co= py_to_urb Author: lizhi.xu@windriver.com #syz test diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 54d01dfd820f..a4c0ea685b8a 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1606,6 +1606,9 @@ static int prepare_playback_urb(struct snd_usb_substr= eam *subs, subs->cur_audiofmt->dsd_bitrev)) { fill_playback_urb_dsd_bitrev(subs, urb, bytes); } else { + if (bytes > ctx->buffer_size) + return -EPIPE; + /* usual PCM */ if (!subs->tx_length_quirk) copy_to_urb(subs, urb, 0, stride, bytes);