diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2017-02-16 17:22:46 +0100 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:57:37 +0200 |
| commit | e5382c346cbb31c0b9198a0bd25e20f0c19e5700 (patch) | |
| tree | 9a079de554faff64064306946693f8ceed1bc906 /kernel/debug/debug_core.h | |
| parent | 8a3fc0853a085761fa497a2431d8e3bf5b1e4a11 (diff) | |
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
Change-Id: Ie95f2eb9d5e441f663f4438e5d39c5a0bf5a73f0
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/debug/debug_core.h')
0 files changed, 0 insertions, 0 deletions