lkml.org 
[lkml]   [2007]   [Oct]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectb43{,legacy}_start can return uninitialized value
drivers/net/wireless/b43/main.c:b43_start() consists of the
following code:

<-- snip -->

static int b43_start(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
int did_init = 0;
int err;

mutex_lock(&wl->mutex);

if (b43_status(dev) < B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(dev);
if (err)
goto out_mutex_unlock;
did_init = 1;
}

if (b43_status(dev) < B43_STAT_STARTED) {
err = b43_wireless_core_start(dev);
if (err) {
if (did_init)
b43_wireless_core_exit(dev);
goto out_mutex_unlock;
}
}

out_mutex_unlock:
mutex_unlock(&wl->mutex);

return err;
}

<-- snip -->


If (b43_status(dev) == B43_STAT_STARTED) this function returns the value
of an uninitialized variable.

drivers/net/wireless/b43legacy/main.c:b43legacy_start() has the same
issue.

Spotted by the Coverity checker.


cu
Adrian

--

"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-10-14 19:55    [W:0.049 / U:0.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site