Public bug reported:
There is a refcount error in the current 2.6.37.rc* release when unregistering
bridge devices, this prevents
machines from beeing successfully able to shut down and reboot and just spewing
out an endless stream of error messages.
unregister_netdevice: waiting for {bridgedevice} to become free. Usage
count = [somenumber]
Discussion and patch can be found here:
http://us.generation-nt.com/answer/2-6-37-rc2-after-kvm-shutdown-
unregister-netdevice-waiting-vmtst01eth0-become-free-usage-
count-1-help-201081421.html
http://patchwork.ozlabs.org/patch/71354/
The patch is already in David Millers repository but hasn't been pushed
into Linuses repository yet.
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index b41ce0f..aaa3ca4 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2754,13 +2754,13 @@ static int addrconf_ifdown(struct net_device *dev, int
how)
ifa->state = INET6_IFADDR_STATE_DEAD;
spin_unlock_bh(&ifa->state_lock);
- if (state == INET6_IFADDR_STATE_DEAD) {
- in6_ifa_put(ifa);
- } else {
+ if (state != INET6_IFADDR_STATE_DEAD) {
__ipv6_ifa_notify(RTM_DELADDR, ifa);
atomic_notifier_call_chain(&inet6addr_chain,
NETDEV_DOWN, ifa);
}
+
+ in6_ifa_put(ifa);
write_lock_bh(&idev->lock);
}
}
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image (not installed)
Regression: Yes
ProcVersionSignature: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
Uname: Linux 2.6.37-7-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Dec 3 12:38:15 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta amd64 (20100901.1)
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: linux
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug natty
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https://bugs.launchpad.net/bugs/684682
Title:
unregister_netdevice refcount error
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