From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f197.google.com (mail-oi1-f197.google.com [209.85.167.197]) (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 C7045346E51 for ; Sat, 26 Sep 2026 10:37:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790419039; cv=none; b=gtlijktWyQqLk+ugGIE1ItX5pVAFXxHzhmfqMFM9P59mAo3CrZm4ZoFeHpxsu8AKPr/CmA+H03agTkwxGVwbjHzPXjLzK2zVPr73tn5kMUxp4kEKrZ6d9QewiMJBJRRH3LLVnpkZmF4js11Ho4GyclypjS9qrbQFYqLpNGe0R9I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790419039; c=relaxed/simple; bh=rkswUNiZSPjc4VbKZlUJ7+Y6XGSSNG9joDXoTxXxoPo=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=rslVh03PUQcnsM7RhwLFaY6xlAquG6TLOJZggIbFzfaTD+y+mtMnhO0/gPTCSzc9R8QzS5RVgmlsEo1FLNCifIUI21etTvowMaUoVGbca2+hexUQjvowxDH2F3ERlhYu2s3hbOQIK7pFyelQ9BA4Tb+424+DtGFbV8ifZk3C97g= 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=209.85.167.197 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-oi1-f197.google.com with SMTP id 5614622812f47-4e778acdbc6so110265b6e.3 for ; Sat, 26 Sep 2026 03:37:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790419035; x=1791023835; h=content-type: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=8mpQ3CPSq4oqRG6slsXq4GnA/FjdN3wCsQ3cD51WXco=; b=T3cTXUdUbLRx2t1vJLG4gTSaeGoPY/O5Pd54ySKr6TRG9LLgYNI8YWLzOjCefcZ37l AzXoMFsUo80EOVtQfkaCWd1aZN8w9RB5nV13USj6LUd8ty/Wzwix4bOz6e09Kl62X/sY kt8E6aa69/NCzQuNBE8SNN4teUxfxCCHBqdWNoM1sg1T2wLhs6G+TLOGLWF4i2PhTWuN 27vUP5yzkXgZG/y7wnaThTyCPCSsFCMZbmYX8ESY50qfi5aLnDr3wT8KCzgOC9YnazDv gOKmePFojgRqn9gIUKrdWgqX8MYz/ZNBdhKcUDKisxcne4TQPAbh6hWsDk3r1nUtOhCR oK4g== X-Gm-Message-State: AFuF++mjPKURO17emQ2L0mx2cmZkxtvLz+IVjUBS1FUp/Wm9zeXX1FmS YxwxsKgiAYwZDA6MlzftJxnjur8rWUDt+Cty7Qg/zRVHgl5DIM1al8RP1nOK4RlKGgM+58GyebE oo4SVmG/F/tUJTVbJwGXZiqNDM25oQkQOYHozrXrqpazya/FAI/MXhZ10UqI= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:4fce:b0:4cb:f21c:a79c with SMTP id 5614622812f47-4d72ac4ba52mr10888912b6e.36.1790419035120; Sat, 26 Sep 2026 03:37:15 -0700 (PDT) Date: Sat, 26 Sep 2026 03:37:15 -0700 In-Reply-To: <6a7a06b7.b50370da.49fe0.0057.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ab7a05b.dc2998a4.2261f5.0054.GAE@google.com> Subject: Forwarded: [PATCH] usb: fix memory leak in dev_set_name From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [PATCH] usb: fix memory leak in dev_set_name Author: drifabdelmalekmohamedsaid@gmail.com #syz test diff --git a/drivers/usb/gadget/legacy/raw_gadget.c b/drivers/usb/gadget/legacy/raw_gadget.c index 4febf8dac7ca..9c263950f609 100644 --- a/drivers/usb/gadget/legacy/raw_gadget.c +++ b/drivers/usb/gadget/legacy/raw_gadget.c @@ -327,9 +327,16 @@ static int gadget_bind(struct usb_gadget *gadget, static void gadget_unbind(struct usb_gadget *gadget) { + unsigned long flags; struct raw_dev *dev = get_gadget_data(gadget); set_gadget_data(gadget, NULL); + + /*Avoid dangling pointer in case it remaining references*/ + spin_lock_irqsave(&dev->lock, flags); + dev->gadget = NULL; + spin_unlock_irqrestore(&dev->lock, flags); + /* Matches kref_get() in gadget_bind(). */ kref_put(&dev->count, dev_free); }