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f726214d9b
linux/net/l2tp
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Guillaume Nault f726214d9b l2tp: hold reference on tunnels printed in l2tp/tunnels debugfs file 
Use l2tp_tunnel_get_nth() instead of l2tp_tunnel_find_nth(), to be safe
against concurrent tunnel deletion.

Use the same mechanism as in l2tp_ppp.c for dropping the reference
taken by l2tp_tunnel_get_nth(). That is, drop the reference just
before looking up the next tunnel. In case of error, drop the last
accessed tunnel in l2tp_dfs_seq_stop().

That was the last use of l2tp_tunnel_find_nth().

Fixes: 0ad6614048 ("l2tp: Add debugfs files for dumping l2tp debug info")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-13 12:17:26 -04:00
..
Kconfig l2tp: Call udp_sock_create 2014-07-14 16:12:15 -07:00
l2tp_core.c l2tp: hold reference on tunnels printed in l2tp/tunnels debugfs file 2018-04-13 12:17:26 -04:00
l2tp_core.h l2tp: hold reference on tunnels printed in l2tp/tunnels debugfs file 2018-04-13 12:17:26 -04:00
l2tp_debugfs.c l2tp: hold reference on tunnels printed in l2tp/tunnels debugfs file 2018-04-13 12:17:26 -04:00
l2tp_eth.c l2tp: remove .tunnel_sock from struct l2tp_eth 2017-11-11 22:08:23 +09:00
l2tp_ip6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-06 01:20:46 -05:00
l2tp_ip.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-06 01:20:46 -05:00
l2tp_netlink.c l2tp: hold reference on tunnels in netlink dumps 2018-04-13 12:17:26 -04:00
l2tp_ppp.c l2tp: hold reference on tunnels printed in pppol2tp proc file 2018-04-13 12:17:26 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00