From: Lin Zhang <xiaolou4...@gmail.com> Date: Thu, 25 May 2017 14:07:18 +0800
> There is a race condition in llc_ui_bind if two or more processes/threads > try to bind a same socket. > > If more processes/threads bind a same socket success that will lead to > two problems, one is this action is not what we expected, another is > will lead to kernel in unstable status or oops(in my simple test case, > cause llc2.ko can't unload). > > The current code is test SOCK_ZAPPED bit to avoid a process to > bind a same socket twice but that is can't avoid more processes/threads > try to bind a same socket at the same time. > > So, add lock_sock in llc_ui_bind like others, such as llc_ui_connect. > > Signed-off-by: Lin Zhang <xiaolou4...@gmail.com> Applied, thank you.
