tun: free skb in early errors

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[ Upstream commit c33ee15b38 ]

tun_recvmsg() supports accepting skb by msg_control after
commit ac77cfd425 ("tun: support receiving skb through msg_control"),
the skb if presented should be freed no matter how far it can go
along, otherwise it would be leaked.

This patch fixes several missed cases.

Signed-off-by: Wei Xu <wexu@redhat.com>
Reported-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Wei Xu 2017-12-01 05:10:37 -05:00 • committed by Greg Kroah-Hartman

parent 241eb29c01

commit 0536add671

1 changed files with 18 additions and 6 deletions

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drivers/net/tun.c

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