On 4/16/21 2:53 PM, Tom Seewald wrote:
From: Shuah Khan skhan@linuxfoundation.org
commit bd8b82042269a95db48074b8bb400678dbac1815 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 vudc.
Cc: stable@vger.kernel.org # 4.9.x # 4.14.x Reported-and-tested-by: syzbot+a93fba6d384346a761e3@syzkaller.appspotmail.com Signed-off-by: Shuah Khan skhan@linuxfoundation.org Link: https://lore.kernel.org/r/caabcf3fc87bdae970509b5ff32d05bb7ce2fb15.161680711... 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 and 4.14.x
thanks, -- Shuah