On 06/01/2012 09:11 PM, Hans de Bruin wrote:
On 05/29/2012 12:19 AM, Hans de Bruin wrote:
I just upgraded my home server from kernel 3.3.5 to 3.4.0 and ran into
some trouble. My laptop, a nfsroot client, will not run firefox and
thunderbird anymore. When I start these programs from an xterm, the
cursor goes to the next line and waits indefinitely.
I do not know if there is any order is lsof's output. A lsof | grep
firefox or thunderbird shows ......./.parentlock as the last line.
It does not matter whether the client is running a 3.4.0 or a 3.3.0
kernel, or if the server is running on top of xen or not.
There is some noise in the servers dmesg:
[ 241.256684] INFO: task kworker/u:2:801 blocked for more than 120
seconds.
[ 241.256691] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
...
On a almost identical testsystem firefox en thunderbird segfault after
upgrading to 3.4.0. I would have been nice if it would behave exaclty
like my home server. I bisected the segfault to:
commit 0fc9d1040313047edf6a39fd4d7c7defdca97c62
Author: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
Date: Wed Mar 28 14:42:54 2012 -0700
radix-tree: use iterators in find_get_pages* functions
When I revert that on top of 3.4.0 the segfaults are gone but both
firefox en thunderbird go in the lets wait indefinitely mode like the
homeserver.
I am going to make a bit-wise copy from from my homeserver to my
testserver and try again.
The bit-wise copy also segfaults firefox and thunderbird at the same
commit.
--
Hans
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