On 08/19/2013 04:22 PM, Shuah Khan wrote:
On 08/19/2013 02:14 PM, Stefan Lippers-Hollmann wrote:
Hi
On Monday 19 August 2013, Greg Kroah-Hartman wrote:
On Mon, Aug 19, 2013 at 12:02:17PM -0600, Shuah Khan wrote:
On 08/18/2013 02:34 PM, Greg Kroah-Hartman wrote:
[…]
and the following traces in dmesg:
[ 124.802169] init: udevtrigger post-stop process (353) terminated
with status 1
[ 243.439212] INFO: task crda:723 blocked for more than 120 seconds.
What is "crda"?
Any luck with bisection? It should go fast as the majority of patches
here are non-x86.
crda is a userspace helper, invoked by udev events, which sets -and
intersects as needed- the regulatory domain settings for (modern,
cfg80211 based) wlan hardware based on the device's EEPROM regdom hint,
local configuration (country code) and eventual IEEE 802.11d hints
(country IEs) beaconed by access points nearby. It hooks into udev with
these udev rules (Debian/ 1.1.2-1):
$ grep -v -e ^$ -e ^\# /lib/udev/rules.d/60-crda.rules
SUBSYSTEM=="ieee80211", ACTION=="add", RUN+="/lib/crda/setregdomain"
$ grep -v -e ^$ -e ^\# /lib/udev/rules.d/85-regulatory.rules
KERNEL=="regulatory*", ACTION=="change", SUBSYSTEM=="platform",
RUN+="/sbin/crda"
Full source is at [2], it should be installed on pretty much every
distro/ system released with wlan support for the last >>3 years.
There are two iwl4965 patches in this series, which might be among the
first ones to check - /if/ you actually have that hardware, the second
one (iwl4965: reset firmware after rfkill off) might also indirectly
have an effect on blutetooth (via rfkill).
Regards
Stefan Lippers-Hollmann
[1] http://wireless.kernel.org/en/developers/Regulatory/CRDA
[2] https://github.com/mcgrof/crda
Greg,
git bisect shows the following patch as the problem:
[ 26/34] genetlink: fix family dump race
-- Shuah
Interesting. The same patch is in 3.10.8 as well, and I don't see this
problem on this system on 3.10.8.
-- Shuah
--
Shuah Khan
Senior Linux Kernel Developer - Open Source Group
Samsung Research America(Silicon Valley)
shuah.kh@xxxxxxxxxxx | (970) 672-0658
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