On Wed, 23 May 2007 02:59:07 +0000 "young dave" <[email protected]> wrote:
> Hi,
> maybe we can add if sentence before kthread_stop.
>
> diff -ur linux/fs/cifs/connect.c linux.new/fs/cifs/connect.c
> --- linux/fs/cifs/connect.c 2007-05-23 10:59:13.000000000 +0000
> +++ linux.new/fs/cifs/connect.c 2007-05-23 10:58:39.000000000 +0000
> @@ -2070,7 +2070,8 @@
> spin_unlock(&GlobalMid_Lock);
> if (srvTcp->tsk) {
> send_sig(SIGKILL,srvTcp->tsk,1);
> - kthread_stop(srvTcp->tsk);
> + if(srvTcp->tsk)
> + kthread_stop(srvTcp->tsk);
> }
> }
Yeah, that's racy: once we've sent the signal, the kernel thread can write
NULL to srvTcp->tsk at any time.
-
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