From: Shuah Khan <skhan@linuxfoundation.org>
To: Tom Seewald <tseewald@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: syzbot+a93fba6d384346a761e3@syzkaller.appspotmail.com,
Valentina Manea <valentina.manea.m@gmail.com>,
Shuah Khan <shuah@kernel.org>,
stable@vger.kernel.org, Shuah Khan <skhan@linuxfoundation.org>
Subject: Re: [PATCH 2/4] usbip: stub-dev synchronize sysfs code paths
Date: Fri, 16 Apr 2021 15:44:22 -0600 [thread overview]
Message-ID: <c93d209c-a5ad-3bec-0724-99ab308b3d25@linuxfoundation.org> (raw)
In-Reply-To: <20210416205319.14075-2-tseewald@gmail.com>
On 4/16/21 2:53 PM, Tom Seewald wrote:
> From: Shuah Khan <skhan@linuxfoundation.org>
>
> commit 9dbf34a834563dada91366c2ac266f32ff34641a upstream.
>
> Fuzzing uncovered race condition between sysfs code paths in usbip
> drivers. Device connect/disconnect code paths initiated through
> sysfs interface are prone to races if disconnect happens during
> connect and vice versa.
>
> Use sysfs_lock to protect sysfs paths in stub-dev.
>
> Cc: stable@vger.kernel.org # 4.9.x
> Reported-and-tested-by: syzbot+a93fba6d384346a761e3@syzkaller.appspotmail.com
> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
> Link: https://lore.kernel.org/r/2b182f3561b4a065bf3bf6dce3b0e9944ba17b3f.1616807117.git.skhan@linuxfoundation.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Tom Seewald <tseewald@gmail.com>
> ---
Thank you for the backport.
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Greg, please pick this up for 4.9.x
thanks,
-- Shuah
next prev parent reply other threads:[~2021-04-16 21:44 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 20:53 [PATCH 1/4] usbip: add sysfs_lock to synchronize sysfs code paths Tom Seewald
2021-04-16 20:53 ` [PATCH 2/4] usbip: stub-dev " Tom Seewald
2021-04-16 21:44 ` Shuah Khan [this message]
2021-04-16 20:53 ` [PATCH 3/4] usbip: vudc " Tom Seewald
2021-04-16 21:45 ` Shuah Khan
2021-04-16 20:53 ` [PATCH 4/4] usbip: synchronize event handler with " Tom Seewald
2021-04-16 21:45 ` Shuah Khan
2021-04-16 21:43 ` [PATCH 1/4] usbip: add sysfs_lock to synchronize " Shuah Khan
2021-04-19 12:23 ` Greg Kroah-Hartman
2021-04-19 21:42 ` Shuah Khan
2021-04-20 7:30 ` Greg Kroah-Hartman
-- strict thread matches above, loose matches on Subject: below --
2021-03-30 1:36 [PATCH 0/4] usbip " Shuah Khan
2021-03-30 1:36 ` [PATCH 2/4] usbip: stub-dev " Shuah Khan
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