Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1539890

Re: [patch] nvme-fabrics: correct some printk information

Show all headers | View raw

On Sat, Dec 10, 2016 at 03:27:50AM -0800, Joe Perches wrote:
> On Sat, 2016-12-10 at 12:06 +0300, Dan Carpenter wrote:
> > We really don't care where "ctrl" is on the stack since we're just
> > returning soon what we want is the actual ctrl pointer itself.
> > 
> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> > 
> > diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
> []
> > @@ -2402,7 +2402,7 @@ enum blk_eh_timer_return
> >  
> >  	dev_info(ctrl->ctrl.device,
> >  		"NVME-FC{%d}: new ctrl: NQN \"%s\" (%p)\n",
> > -		ctrl->cnum, ctrl->ctrl.opts->subsysnqn, &ctrl);
> > +		ctrl->cnum, ctrl->ctrl.opts->subsysnqn, ctrl);
> 
> Found by script or inspection?
> 
> If by script, it seems unlikely there's only 1 instance
> where an address of an automatic pointer type is used
> incorrectly.

Script.  But it's using a pretty specific heuristic where we kmalloc a
pointer and then pass the address.  It prints few warnings.  Probably
40% false positives, but the remaining examples of course are 100% false
positives.

regards,
dan carpenter

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[patch] nvme-fabrics: correct some printk information Dan Carpenter <dan.carpenter@oracle.com> - 2016-12-10 10:20 +0100
  Re: [patch] nvme-fabrics: correct some printk information Joe Perches <joe@perches.com> - 2016-12-10 12:30 +0100
    Re: [patch] nvme-fabrics: correct some printk information Dan Carpenter <dan.carpenter@oracle.com> - 2016-12-10 20:00 +0100
      Re: [patch] nvme-fabrics: correct some printk information Julia Lawall <julia.lawall@lip6.fr> - 2016-12-10 21:10 +0100
        Re: [patch] nvme-fabrics: correct some printk information Dan Carpenter <dan.carpenter@oracle.com> - 2016-12-10 21:30 +0100
        Re: [patch] nvme-fabrics: correct some printk information Joe Perches <joe@perches.com> - 2016-12-10 22:00 +0100
          Re: [patch] nvme-fabrics: correct some printk information Dan Carpenter <dan.carpenter@oracle.com> - 2016-12-10 22:10 +0100
            Re: [patch] nvme-fabrics: correct some printk information Joe Perches <joe@perches.com> - 2016-12-10 23:30 +0100
              Re: [patch] nvme-fabrics: correct some printk information Dan Carpenter <dan.carpenter@oracle.com> - 2016-12-12 10:40 +0100
                Re: [patch] nvme-fabrics: correct some printk information Julia Lawall <julia.lawall@lip6.fr> - 2016-12-12 16:50 +0100
                Re: [patch] nvme-fabrics: correct some printk information Joe Perches <joe@perches.com> - 2016-12-12 17:00 +0100
          Re: [patch] nvme-fabrics: correct some printk information Julia Lawall <julia.lawall@lip6.fr> - 2016-12-10 23:10 +0100
            Re: [patch] nvme-fabrics: correct some printk information Joe Perches <joe@perches.com> - 2016-12-10 23:30 +0100
        Re: [patch] nvme-fabrics: correct some printk information Joe Perches <joe@perches.com> - 2016-12-11 01:40 +0100
  Re: [patch] nvme-fabrics: correct some printk information James Smart <james.smart@broadcom.com> - 2016-12-20 01:50 +0100
    Re: [patch] nvme-fabrics: correct some printk information Dan Carpenter <dan.carpenter@oracle.com> - 2016-12-20 10:20 +0100

csiph-web