[lkml]   [2005]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [OOPS] 2.6.11 - NMI lockup with CFQ scheduler
On Thu, Apr 07 2005, James Bottomley wrote:
> On Thu, 2005-04-07 at 15:32 +0200, Jens Axboe wrote:
> > I think Christophs point is that why add sdev_lock as a pointer, instead
> > of just killing it? It's only used in one location, so it's not really
> > that confusing (and a comment could fix that).
> Because any use of sdev->request_queue->queue_lock would likely succeed
> even after we've freed the device and released the queue. If it's a
> pointer and we null it after free and release, then any later use will
> trigger an immediate NULL deref oops.

So clear ->request_queue instead.

Jens Axboe

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-04-07 16:51    [W:0.044 / U:1.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site