* Bruce Evans <[EMAIL PROTECTED]> [020131 09:42] wrote:
> Jan 31 18:27:29 gamplex kernel: lock order reversal
> Jan 31 18:27:29 gamplex kernel: 1st 0xc26ea034 filedesc structure @
>./@/kern/kern_descrip.c:925
> Jan 31 18:27:29 gamplex kernel: 2nd 0xc031eca0 Giant @ ./@/kern/kern_descrip.c:959
>
> %%%
> Index: kern_descrip.c
> ===================================================================
> RCS file: /home/ncvs/src/sys/kern/kern_descrip.c,v
> retrieving revision 1.122
> diff -u -2 -r1.122 kern_descrip.c
> --- kern_descrip.c 29 Jan 2002 22:54:19 -0000 1.122
> +++ kern_descrip.c 31 Jan 2002 07:32:43 -0000
> @@ -957,7 +967,9 @@
> fdexpand++;
> if (oldofile != NULL) {
> + FILEDESC_UNLOCK(fdp);
> mtx_lock(&Giant);
> FREE(oldofile, M_FILEDESC);
> mtx_unlock(&Giant);
> + FILEDESC_LOCK(fdp);
> }
> }
> %%%
>
> I'm not sure that releasing the lock here is safe, but other parts of
> fdalloc() do this.
I don't think this is safe at a glance, I think it's only safe right
before return'ing from the function. I'll look at it later tonight.
-Alfred
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-current" in the body of the message
