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sctp: Do not reset the packet during sctp_packet_config().

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commit 4bdab43323 upstream.

sctp_packet_config() is called when getting the packet ready
for appending of chunks.  The function should not touch the
current state, since it's possible to ping-pong between two
transports when sending, and that can result packet corruption
followed by skb overlfow crash.

Reported-by: Thomas Dreibholz <dreibh@iem.uni-due.de>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Vlad Yasevich
2010-09-15 10:00:26 -04:00
committed by Greg Kroah-Hartman
parent bded361d94
commit ca92b22ffa
1 changed files with 0 additions and 1 deletions
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net/sctp/output.c
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@@ -91,7 +91,6 @@ struct sctp_packet *sctp_packet_config(struct sctp_packet *packet,
SCTP_DEBUG_PRINTK("%s: packet:%p vtag:0x%x\n", __func__,
packet, vtag);
sctp_packet_reset(packet);
packet->vtag = vtag;
if (ecn_capable && sctp_packet_empty(packet)) {