The commit 984ff7a3e060 is an upstream backport. In fact, it depends on
commit 395eea6ccf2b ("rtnetlink: delay RTM_DELLINK notification until after ndo_uninit()")
which has not been backported in 3.18.y.
Before commit 395eea6ccf2b, rollback_registered_many() uses rtmsg_ifinfo().
The call to this function is done with dev->reg_state set to
NETREG_UNREGISTERING, thus testing this reg_state in rtmsg_ifinfo() is
wrong.
This patch partially reverts commit 984ff7a3e060.
Fixes: 984ff7a3e060 ("rtnl/bond: don't send rtnl msg for unregistered iface")
Reported-by: Kristian Evensen <kristian.evensen@xxxxxxxxx>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
---
net/core/rtnetlink.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 24d3242f0e01..c522f7a00eab 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2229,9 +2229,6 @@ void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change,
int err = -ENOBUFS;
size_t if_info_size;
- if (dev->reg_state != NETREG_REGISTERED)
- return;
-
skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags);
if (skb == NULL)
goto errout;
--
2.4.2
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