lkml.org 
[lkml]   [2013]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject[ASAP] thermal_sys.c NULL ptr deref patch likely incomplete
Hi,

I just had a

# cat /sys/class/thermal/thermal_zone0/policy
(null)


When looking at the code (on my -rc7), I saw:

drivers/thermal/thermal_sys.c

static ssize_t
policy_show(struct device *dev, struct device_attribute *devattr, char
*buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);

return sprintf(buf, "%s\n", tz->governor->name);
}


(not sure though why I manage to get a "(null)" rather than a crash
due to the dereferencing prior to output - possibly since I do have a
valid governor allocated yet then only its name field is null?)


Seems we are missing a critical (and -rc-relevant) patch here
(and perhaps at other locations in this file, too, given that
this one was missed last time?).

Currently trying to get acerhdf operation into a working state
(and having some trouble with it - didn't know that I probably need some
governor setup which seems to have just been available on my last setup,
or so)

Thanks,

Andreas Mohr


\
 
 \ /
  Last update: 2013-02-14 16:21    [W:0.060 / U:0.736 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site