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| author | Guillaume Nault <g.nault@alphalink.fr> | 2018-04-12 20:50:33 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-13 12:17:26 -0400 |
| commit | 5846c131c39b6d0add36ec19dc8650700690f930 (patch) | |
| tree | d8bbddb871da06b66202ebaf67527dcb3267f19b /mm/swap_state.c | |
| parent | 9267c430c6b6f4c0120e3c6bb847313d633f02a6 (diff) | |
| download | blackbird-op-linux-5846c131c39b6d0add36ec19dc8650700690f930.tar.gz blackbird-op-linux-5846c131c39b6d0add36ec19dc8650700690f930.zip | |
l2tp: hold reference on tunnels in netlink dumps
l2tp_tunnel_find_nth() is unsafe: no reference is held on the returned
tunnel, therefore it can be freed whenever the caller uses it.
This patch defines l2tp_tunnel_get_nth() which works similarly, but
also takes a reference on the returned tunnel. The caller then has to
drop it after it stops using the tunnel.
Convert netlink dumps to make them safe against concurrent tunnel
deletion.
Fixes: 309795f4bec2 ("l2tp: Add netlink control API for L2TP")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/swap_state.c')
0 files changed, 0 insertions, 0 deletions
