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f2f7358c38
linux-stable/net/batman-adv
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Remi Pommarel f2f7358c38 batman-adv: Do not send uninitialized TT changes 
The number of TT changes can be less than initially expected in
batadv_tt_tvlv_container_update() (changes can be removed by
batadv_tt_local_event() in ADD+DEL sequence between reading
tt_diff_entries_num and actually iterating the change list under lock).

Thus tt_diff_len could be bigger than the actual changes size that need
to be sent. Because batadv_send_my_tt_response sends the whole
packet, uninitialized data can be interpreted as TT changes on other
nodes leading to weird TT global entries on those nodes such as:

 * 00:00:00:00:00:00   -1 [....] (  0) 88:12:4e:ad:7e:ba (179) (0x45845380)
 * 00:00:00:00:78:79 4092 [.W..] (  0) 88:12:4e:ad:7e:3c (145) (0x8ebadb8b)

All of the above also applies to OGM tvlv container buffer's tvlv_len.

Remove the extra allocated space to avoid sending uninitialized TT
changes in batadv_send_my_tt_response() and batadv_v_ogm_send_softif().

Fixes: e1bf0c1409 ("batman-adv: tvlv - convert tt data sent within OGMs")
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2024-12-05 22:38:26 +01:00
..
bat_algo.c batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bat_algo.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bat_iv_ogm.c batman-adv: Use string choice helper to print booleans 2024-10-06 19:20:26 +02:00
bat_iv_ogm.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bat_v_elp.c batman-adv: Do not get eth header before batadv_check_management_packet 2023-07-28 15:39:38 +02:00
bat_v_elp.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bat_v_ogm.c batman-adv: Fix batadv_v_ogm_aggr_send memory leak 2023-08-09 17:33:03 +02:00
bat_v_ogm.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bat_v.c batman-adv: Drop per algo GW section class code 2023-08-14 18:01:21 +02:00
bat_v.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bitarray.c batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bitarray.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
bridge_loop_avoidance.c batman-adv: Use string choice helper to print booleans 2024-10-06 19:20:26 +02:00
bridge_loop_avoidance.h batman-adv: Remove the repeated declaration 2021-05-30 13:38:27 +02:00
distributed-arp-table.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
distributed-arp-table.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
fragmentation.c batman-adv: mcast: implement multicast packet reception and forwarding 2023-11-14 08:16:34 +01:00
fragmentation.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
gateway_client.c batman-adv: Switch to linux/sprintf.h 2023-11-14 08:16:34 +01:00
gateway_client.h batman-adv: Check ptr for NULL before reducing its refcnt 2021-08-08 20:21:40 +02:00
gateway_common.c batman-adv: Drop per algo GW section class code 2023-08-14 18:01:21 +02:00
gateway_common.h batman-adv: Drop per algo GW section class code 2023-08-14 18:01:21 +02:00
hard-interface.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-24 10:51:39 -07:00
hard-interface.h batman-adv: Check ptr for NULL before reducing its refcnt 2021-08-08 20:21:40 +02:00
hash.c batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
hash.h batman-adv: Fix spelling mistakes 2021-06-02 08:46:03 +02:00
Kconfig This feature/cleanup patchset is an updated version of the pull request 2021-02-08 11:32:40 -08:00
log.c isystem: ship and use stdarg.h 2021-08-19 09:02:55 +09:00
log.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
main.c genetlink: remove linux/genetlink.h 2024-04-01 21:44:34 -07:00
main.h batman-adv: Start new development cycle 2024-10-05 18:23:24 +02:00
Makefile batman-adv: mcast: implement multicast packet reception and forwarding 2023-11-14 08:16:34 +01:00
multicast_forw.c batman-adv: mcast: shrink tracker packet after scrubbing 2023-11-14 08:16:34 +01:00
multicast.c batman-adv: mcast: fix memory leak on deleting a batman-adv interface 2024-01-27 09:13:39 +01:00
multicast.h batman-adv: mcast: implement multicast packet generation 2023-11-14 08:16:34 +01:00
netlink.c genetlink: remove linux/genetlink.h 2024-04-01 21:44:34 -07:00
netlink.h batman-adv: Keep batadv_netlink_notify_* static 2023-08-14 18:01:21 +02:00
network-coding.c batman-adv: tvlv: prepare for tvlv enabled multicast packet type 2023-01-21 19:01:59 +01:00
network-coding.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
originator.c batman-adv: Don't accept TT entries for out-of-spec VIDs 2024-06-03 10:20:43 +02:00
originator.h batman-adv: mcast: implement multicast packet reception and forwarding 2023-11-14 08:16:34 +01:00
routing.c batman-adv: mcast: implement multicast packet reception and forwarding 2023-11-14 08:16:34 +01:00
routing.h batman-adv: mcast: implement multicast packet reception and forwarding 2023-11-14 08:16:34 +01:00
send.c batman-adv: Migrate to linux/container_of.h 2022-03-02 09:00:13 +01:00
send.h batman-adv: bcast: queue per interface, if needed 2021-05-17 12:00:44 +02:00
soft-interface.c netdev_features: convert NETIF_F_NETNS_LOCAL to dev->netns_local 2024-09-03 11:36:43 +02:00
soft-interface.h batman-adv: Check ptr for NULL before reducing its refcnt 2021-08-08 20:21:40 +02:00
tp_meter.c batman-adv: Migrate to linux/container_of.h 2022-03-02 09:00:13 +01:00
tp_meter.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
trace.c batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
trace.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
translation-table.c batman-adv: Do not send uninitialized TT changes 2024-12-05 22:38:26 +01:00
translation-table.h batman-adv: Check ptr for NULL before reducing its refcnt 2021-08-08 20:21:40 +02:00
tvlv.c batman-adv: tvlv: prepare for tvlv enabled multicast packet type 2023-01-21 19:01:59 +01:00
tvlv.h batman-adv: tvlv: prepare for tvlv enabled multicast packet type 2023-01-21 19:01:59 +01:00
types.h treewide: Fix wrong singular form of jiffies in comments 2024-09-08 20:47:40 +02:00