From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f200.google.com (mail-oi1-f200.google.com [209.85.167.200]) (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 C453C3B8D5C for ; Wed, 26 Aug 2026 23:33:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787787188; cv=none; b=QzmZzsmkdehToRyaIXSTEBRjk2ZxXntiwwd2IW+9ny80q7scgadAdcsh/O0PCuIu0U9kMl++p0hfcDm/+9+1p9xSiDizyUXXi9BYjibut8ZE8ZEdp5s0FXEOYBVWFO7zzzVt9Y4bILHA9gIbeu673vDyhSn9iFQ9n+annTLZaaQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787787188; c=relaxed/simple; bh=VSmnmLd5O7V43s3JDQpDcjcoB0RJoN2y0GkjK/z+ULw=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=L4NhsofJG5RiUwWsAlW33Fz9L78gqpXe0GSYA+GLCqsbKom2XNVj3MHfViV7kEKMbA8QzkYOz7Z+jcQG0VLQfp1XA2YyYPE9Ae2W0wUK2dwl6126wee5fuZBJdBUFwRCnbSYXWiuElqB6qnW0/8XpjfbS29R4d9tbmvBb6kWy2M= 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=209.85.167.200 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-oi1-f200.google.com with SMTP id 5614622812f47-4a41f46d629so3423419b6e.3 for ; Wed, 26 Aug 2026 16:33:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787787186; x=1788391986; h=content-type:cc:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=enoyTgXWSEVpgM6MpWVTXRbUCjMYKL4w/pi7pJcpPgE=; b=nDx0AHTI5oSWfXX6h8ysFy5z+5Gsm4ZAT+8ELqF8yz/m4TatemC/uOVCgsCz4498ke HMNj9z9axcJ28iG4f9veY2RrHq9yuTXcSUgQcLi8pNKHcFl8VJ2PG8qB1W7KknJFjTbX iD5Eg6eYQgMcPQl2raUW/DZOzA2foinilketosIcHjR+9t9fIhkh2Zpci1YWtmP4C/Dd BhQRUzSTsfA6ticQV5XfeX8BaXV+4QwYKPFYhKXcekc26BXdv31wcD0r2oE1tse1WMRJ 7X/okeClB+B81amAgucBZQsgmx/VI6LmrR1ROCuYgK2hBFlN1rLFZCE5MGixv2qOASjl kViA== X-Forwarded-Encrypted: i=1; AHgh+RqZ1383/nSXbcpXVHxk3OO+HxLzd0C6xJ+mDitOH69BRuJpy7IY7RHPre6DmLFISFfZcRtJY5S6c6QPgu0=@vger.kernel.org X-Gm-Message-State: AFuF++nckRj2hKui8EfPHbavAJON1OYHat1iVCT5F8CyufqvYnjcILMd OJ2QfNQvpvteIVK0J5X/y5dRhDoq2JEq+fYQPnvMVluzdB8rbpSagsGOzAc+dXpLq7PoT2vOxvk 1HAO8rKV4aE7rbxaRNyc61/PdeVAF/bS2ExrlyxtBhPMbH9HrX3Rjd95oKwM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:c297:b0:4b2:e95f:380d with SMTP id 5614622812f47-4b36698e87fmr13595571b6e.6.1787787185841; Wed, 26 Aug 2026 16:33:05 -0700 (PDT) Date: Wed, 26 Aug 2026 16:33:05 -0700 In-Reply-To: <20260826233245.1621-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a8f77b1.50659fcc.60cd.0009.GAE@google.com> Subject: Re: [syzbot] [usb?] KASAN: slab-use-after-free Read in stub_rx_loop From: syzbot To: hdanton@sina.com Cc: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" >> Date: Wed, 26 Aug 2026 09:49:36 -0700 [thread overview] >> syzbot has found a reproducer for the following issue on: >> >> HEAD commit: 818bebeb63dd drm/xe: Don't hand out the flat CCS storage a.. >> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >> console output: https://syzkaller.appspot.com/x/log.txt?x=151ce979580000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=ccca94d2c01b9e78 >> dashboard link: https://syzkaller.appspot.com/bug?extid=06fa667a0931a3430026 >> compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a28d49580000 > > #syz test "" does not look like a valid git branch or commit. > > --- x/drivers/usb/usbip/stub_rx.c > +++ y/drivers/usb/usbip/stub_rx.c > @@ -606,7 +606,8 @@ static void stub_recv_cmd_submit(struct > return; > > /* urb is now ready to submit */ > - for (i = 0; i < priv->num_urbs; i++) { > + num_urbs = priv->num_urbs; > + for (i = 0; i < num_urbs; i++) { > if (!is_tweaked) { > ret = usb_submit_urb(priv->urbs[i], GFP_KERNEL); > > --