|Summary:||socket(PF_INET6 hangs when ipv6 not yet initialized|
|Product:||Networking||Reporter:||Rafael J. Wysocki (rjw)|
|Component:||IPV6||Assignee:||Hideaki YOSHIFUJI (yoshfuji)|
|Severity:||normal||CC:||alan, florian, mh+kernel-bugzilla, nhorman|
|Bug Depends on:|
Description Rafael J. Wysocki 2010-01-10 21:58:23 UTC
Subject : 2.6.32.x socket(PF_INET6 hangs when ipv6 not yet initialized Submitter : Marc Haber <firstname.lastname@example.org> Date : 2010-01-10 14:28 References : http://marc.info/?l=linux-kernel&m=126313553029280&w=4 This entry is being used for tracking a regression from 2.6.31. Please don't close it until the problem is fixed in the mainline.
Comment 1 Neil Horman 2010-02-22 00:31:52 UTC
Can you get a sysrq-t dump of the system (or enable the nmi watchdog on boot)? Theres a big comment about registering the inet6 protocol family half way through init, and it being dangerous (which it is), but its done so that other in-kernel protocols can create sockets (igmp/etc). My guess is that its probably not related to socket creates specifically, but rather related to trying to send/receive data on the sockets prior to initalization completing. either way, a stack trace would solve this quick, so liberal applcation of nmi_watchdog, or some other hangcheck utility would be great.
Comment 2 Marc Haber 2010-03-26 21:54:09 UTC
unfortunately, I have not yet found out how to create a dump of the system in virtualbox.
Comment 3 Florian Mickler 2011-02-02 09:23:41 UTC
Hello Marc, is this still a problem with current (2.6.37.y) kernels?