From patchwork Fri Dec 27 06:32:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 60922 Received: from vger.kernel.org ([209.132.180.67]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1ikjAy-00075M-Kh; Fri, 27 Dec 2019 06:32:44 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726197AbfL0Gck (ORCPT + 1 other); Fri, 27 Dec 2019 01:32:40 -0500 Received: from mail-pf1-f194.google.com ([209.85.210.194]:44413 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725904AbfL0Gck (ORCPT ); Fri, 27 Dec 2019 01:32:40 -0500 Received: by mail-pf1-f194.google.com with SMTP id 195so13427805pfw.11; Thu, 26 Dec 2019 22:32:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2aAZsrFg19vll1emaW6XpIeha1H0m56azXvY0CR3CNI=; b=QVLqmpEAbgO2c42Y8tN7yjEwEflGvvFkcpiVcMD3XIqLRILUAeL2JgE94lP0d2l6Jo 8Olnde1TWqU37CNeGWvivKNnyz2cP4Hwd2dzMYqXlB6DHV56xEmF/XZO0a1Mhp591qHJ mvrM/dnOi92oltV+os0KafIuom1VBvkfu30pivZzaFTDpeM6K1nLYhUN/Sy5EVtqVfSr 7hexdgBSXUopcPY9xUp3khH7XPKs9RJTovJ/mmCKwWcE+7GwuP1GBI2yti1SkprgbHaf iU70Y1IKvUbosCXMhnpvOvCl233EWQzCNc08hlvDR/ahyEG4gHsXFb53b+45hLer3iG/ ZBZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2aAZsrFg19vll1emaW6XpIeha1H0m56azXvY0CR3CNI=; b=hbSjwunGcmTvAWLDsEIKmh6ZS3n2QxusLjnpAgdIqkyzrF76T9h5G+6OualvKkNHQN WEiQJuWOlB+qP+axYvFBAsp+MRpTiX2cg9mSMSFfSREmlpAbxfLpyijWqrrvKTdm3NMV dsXhq64TO7pjR1+tDmWXP96O9VuXrvj7o6kNbFZ0bth1j/js8Ek48clNlBFHSpjkYCwn 1xFR6zNTGAeNYdnJ3KHMnOVGmUeufDCD53Ypscvu/8ZUusg7O9hlbg/oGw9L0h+XlxLz /fFnO/4pzWCKsgP6mX3j5L7xpLVkjTruER1yl/qxcQbdXCk34/RdF3U3FmR4UW5ZTBRL g57w== X-Gm-Message-State: APjAAAWcikk0r6gXeskLZCbGyEtGEDREfihVZZqbH72+BSsg5YBnTgqw 4C/HUwMvKBca5Dxm1Nim+mSGebwY X-Google-Smtp-Source: APXvYqzpfH2rh0jD8O3cY2+AVWY6TqBk7XZZSc+kF3cJWPXyqCwoDqf0/S76vRyOMV17qmNwfXnOOw== X-Received: by 2002:a63:215f:: with SMTP id s31mr51237960pgm.27.1577428359435; Thu, 26 Dec 2019 22:32:39 -0800 (PST) Received: from tw-172-25-31-76.office.twttr.net ([8.25.197.24]) by smtp.gmail.com with ESMTPSA id s18sm34388938pfh.179.2019.12.26.22.32.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Dec 2019 22:32:38 -0800 (PST) From: Cong Wang To: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Cong Wang , syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com, Greg Hackmann , Chenbo Feng , Sumit Semwal Subject: [PATCH] dma-buf: free dmabuf->name in dma_buf_release() Date: Thu, 26 Dec 2019 22:32:04 -0800 Message-Id: <20191227063204.5813-1-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org dma-buff name can be set via DMA_BUF_SET_NAME ioctl, but once set it never gets freed. Free it in dma_buf_release(). Fixes: bb2bb9030425 ("dma-buf: add DMA_BUF_SET_NAME ioctls") Reported-by: syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com Cc: Greg Hackmann Cc: Chenbo Feng Cc: Sumit Semwal Signed-off-by: Cong Wang Acked-by: Chenbo Feng --- drivers/dma-buf/dma-buf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index ce41cd9b758a..2427398ff22a 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -108,6 +108,7 @@ static int dma_buf_release(struct inode *inode, struct file *file) dma_resv_fini(dmabuf->resv); module_put(dmabuf->owner); + kfree(dmabuf->name); kfree(dmabuf); return 0; }