linux-kernel - Re: [PATCH] usb: gadget: f_fs: don't free buffer prematurely

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALAqxLXaUAfz8n6Cpux7XBhHVHifTQhM_wnz4L3DzrmQ0GoCHg@mail.gmail.com>
Date:   Tue, 19 Mar 2019 16:41:24 -0700
From:   John Stultz <john.stultz@...aro.org>
To:     fei.yang@...el.com
Cc:     Felipe Balbi <balbi@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Jerry Zhang <zhangjerry@...gle.com>, andrzej.p@...labora.com,
        Vincent Pelletier <plr.vincent@...il.com>,
        jingx.shen@...el.com, Linux USB List <linux-usb@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: gadget: f_fs: don't free buffer prematurely

On Tue, Mar 19, 2019 at 4:25 PM <fei.yang@...el.com> wrote:
>
> From: Fei Yang <fei.yang@...el.com>
>
> The following kernel panic happens due to the io_data buffer gets deallocated
> before the async io is completed. Add a check for the case where io_data buffer
> should be deallocated by ffs_user_copy_worker.

Yay!  Perfect! I was up late last night chasing this crash, but
couldn't de-thread what the problem was.
So very happy to see this patch!

I'll test it here shortly!

thanks
-john