Sven Eckelmann 987aae75fc batman-adv: Hold rtnl lock during MTU update via netlink ... The automatic recalculation of the maximum allowed MTU is usually triggered by code sections which are already rtnl lock protected by callers outside of batman-adv. But when the fragmentation setting is changed via batman-adv's own batadv genl family, then the rtnl lock is not yet taken. But dev_set_mtu requires that the caller holds the rtnl lock because it uses netdevice notifiers. And this code will then fail the check for this lock: RTNL: assertion failed at net/core/dev.c (1953) Cc: stable@vger.kernel.org Reported-by: syzbot+f8812454d9b3ac00d282@syzkaller.appspotmail.com Fixes: c6a953cce8 ("batman-adv: Trigger events for auto adjusted MTU") Signed-off-by: Sven Eckelmann <sven@narfation.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20230821-batadv-missing-mtu-rtnl-lock-v1-1-1c5a7bfe861e@narfation.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-08-22 17:25:10 -07:00
..
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: Drop prandom.h includes	2023-01-06 08:43:02 +01:00
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 NULL check before dropping references	2021-08-08 20:21:40 +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: remove unnecessary type castings	2022-04-22 11:23:46 +02:00
bridge_loop_avoidance.h	batman-adv: Remove the repeated declaration	2021-05-30 13:38:27 +02:00
distributed-arp-table.c	batman-adv: Broken sync while rescheduling delayed work	2023-05-26 23:14:49 +02:00
distributed-arp-table.h	batman-adv: Drop publication years from copyright info	2021-02-06 09:22:10 +01:00
fragmentation.c	batman-adv: Don't skb_split skbuffs with frag_list	2022-04-17 23:41:44 +02:00
fragmentation.h	batman-adv: Drop publication years from copyright info	2021-02-06 09:22:10 +01:00
gateway_client.c	batman-adv: Migrate to linux/container_of.h	2022-03-02 09:00:13 +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: tvlv: prepare for tvlv enabled multicast packet type	2023-01-21 19:01:59 +01:00
gateway_common.h	batman-adv: Drop publication years from copyright info	2021-02-06 09:22:10 +01:00
hard-interface.c	batman-adv: Don't increase MTU when set by user	2023-07-20 08:56:33 +02:00
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	batman-adv: Migrate to linux/container_of.h	2022-03-02 09:00:13 +01:00
main.h	batman-adv: Start new development cycle	2023-01-06 08:42:59 +01:00
Makefile	batman-adv: Drop publication years from copyright info	2021-02-06 09:22:10 +01:00
multicast.c	batman-adv: tvlv: prepare for tvlv enabled multicast packet type	2023-01-21 19:01:59 +01:00
multicast.h	batman-adv: mcast: remove now redundant single ucast forwarding	2023-01-21 19:01:59 +01:00
netlink.c	batman-adv: Hold rtnl lock during MTU update via netlink	2023-08-22 17:25:10 -07:00
netlink.h	batman-adv: Drop publication years from copyright info	2021-02-06 09:22:10 +01:00
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: Migrate to linux/container_of.h	2022-03-02 09:00:13 +01:00
originator.h	batman-adv: Check ptr for NULL before reducing its refcnt	2021-08-08 20:21:40 +02:00
routing.c	batman-adv: tvlv: prepare for tvlv enabled multicast packet type	2023-01-21 19:01:59 +01:00
routing.h	batman-adv: Drop publication years from copyright info	2021-02-06 09:22:10 +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	batman-adv: Don't increase MTU when set by user	2023-07-20 08:56:33 +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	batman-adv: Drop unused headers in trace.h	2022-08-17 12:10:43 +02:00
translation-table.c	batman-adv: Fix TT global entry leak when client roamed back	2023-08-05 08:02:01 +02:00
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	batman-adv: Don't increase MTU when set by user	2023-07-20 08:56:33 +02:00