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authorSalam Noureddine <noureddine@aristanetworks.com>2013-09-29 13:41:34 -0700
committerBen Hutchings <ben@decadent.org.uk>2013-10-26 21:06:09 +0100
commit765844f8edd831563fc646c7f747abf89eef4d4d (patch)
tree518faf8fdf63c513a05195f351da7b41ca176715 /net/nonet.c
parent003efcca2ad3e471e9103688a715bd33e29cb37b (diff)
ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put
[ Upstream commit 9260d3e1013701aa814d10c8fc6a9f92bd17d643 ] It is possible for the timer handlers to run after the call to ipv6_mc_down so use in6_dev_put instead of __in6_dev_put in the handler function in order to do proper cleanup when the refcnt reaches 0. Otherwise, the refcnt can reach zero without the inet6_dev being destroyed and we end up leaking a reference to the net_device and see messages like the following, unregister_netdevice: waiting for eth0 to become free. Usage count = 1 Tested on linux-3.4.43. Signed-off-by: Salam Noureddine <noureddine@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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