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| author | Andrey Konovalov <[email protected]> | 2017-02-16 16:22:46 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2017-02-17 18:36:25 +0000 |
| commit | 5edabca9d4cff7f1f2b68f0bac55ef99d9798ba4 (patch) | |
| tree | 6472d92163649ed669f5814120ecf500765a0548 /scripts/gcc-plugins/sancov_plugin.c | |
| parent | dpaa_eth: small leak on error (diff) | |
| download | kernel-5edabca9d4cff7f1f2b68f0bac55ef99d9798ba4.tar.gz kernel-5edabca9d4cff7f1f2b68f0bac55ef99d9798ba4.zip | |
dccp: fix freeing skb too early for IPV6_RECVPKTINFO
In the current DCCP implementation an skb for a DCCP_PKT_REQUEST packet
is forcibly freed via __kfree_skb in dccp_rcv_state_process if
dccp_v6_conn_request successfully returns.
However, if IPV6_RECVPKTINFO is set on a socket, the address of the skb
is saved to ireq->pktopts and the ref count for skb is incremented in
dccp_v6_conn_request, so skb is still in use. Nevertheless, it gets freed
in dccp_rcv_state_process.
Fix by calling consume_skb instead of doing goto discard and therefore
calling __kfree_skb.
Similar fixes for TCP:
fb7e2399ec17f1004c0e0ccfd17439f8759ede01 [TCP]: skb is unexpectedly freed.
0aea76d35c9651d55bbaf746e7914e5f9ae5a25d tcp: SYN packets are now
simply consumed
Signed-off-by: Andrey Konovalov <[email protected]>
Acked-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins/sancov_plugin.c')
0 files changed, 0 insertions, 0 deletions