On Thu, 10 Mar 2005, Robin Holt wrote: > > reparent_to_init() does write_lock_irq(&tasklist_lock) then calls > switch_uid() which calls free_uid() which grabs the uidhash_lock. > > Independent of that, we have seen a different cpu call free_uid as a > result of sys_wait4 and, immediately after acquiring the uidhash_lock, > receive a timer interrupt which eventually leads to an attempt to grab > the tasklist_lock.
Hmm.. We fixed this already, and the current tree doesn't have this problem (and the fix was much simpler: just move "switch_uid()" to outside the tasklist_lock. That fix was done late december last year (current BK revision: 1.1938.446.38), and I really think your patch is stale. Please double-check, Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/