sctp: use right member as the param of list_for_each_entry
authorXin Long <lucien.xin@gmail.com>
Sun, 26 Nov 2017 12:56:07 +0000 (20:56 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 17 Dec 2017 14:07:59 +0000 (15:07 +0100)
commit0c882334e2b778c95858d38f2180819d887fa5c3
tree8e771926578e49839329fe64ce7e9b7abf5cb2f5
parent627a5956119fd58bd4b94a26437d449830fc4736
sctp: use right member as the param of list_for_each_entry

[ Upstream commit a8dd397903a6e57157f6265911f7d35681364427 ]

Commit d04adf1b3551 ("sctp: reset owner sk for data chunks on out queues
when migrating a sock") made a mistake that using 'list' as the param of
list_for_each_entry to traverse the retransmit, sacked and abandoned
queues, while chunks are using 'transmitted_list' to link into these
queues.

It could cause NULL dereference panic if there are chunks in any of these
queues when peeling off one asoc.

So use the chunk member 'transmitted_list' instead in this patch.

Fixes: d04adf1b3551 ("sctp: reset owner sk for data chunks on out queues when migrating a sock")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/sctp/socket.c