Craig Dillabaugh 734549eb55 net sched actions: fix dumping which requires several messages to user space ... Fixes a bug in the tcf_dump_walker function that can cause some actions to not be reported when dumping a large number of actions. This issue became more aggrevated when cookies feature was added. In particular this issue is manifest when large cookie values are assigned to the actions and when enough actions are created that the resulting table must be dumped in multiple batches. The number of actions returned in each batch is limited by the total number of actions and the memory buffer size. With small cookies the numeric limit is reached before the buffer size limit, which avoids the code path triggering this bug. When large cookies are used buffer fills before the numeric limit, and the erroneous code path is hit. For example after creating 32 csum actions with the cookie aaaabbbbccccdddd $ tc actions ls action csum total acts 26 action order 0: csum (tcp) action continue index 1 ref 1 bind 0 cookie aaaabbbbccccdddd ..... action order 25: csum (tcp) action continue index 26 ref 1 bind 0 cookie aaaabbbbccccdddd total acts 6 action order 0: csum (tcp) action continue index 28 ref 1 bind 0 cookie aaaabbbbccccdddd ...... action order 5: csum (tcp) action continue index 32 ref 1 bind 0 cookie aaaabbbbccccdddd Note that the action with index 27 is omitted from the report. Fixes: 4b3550ef53 ("[NET_SCHED]: Use nla_nest_start/nla_nest_end")" Signed-off-by: Craig Dillabaugh <cdillaba@mojatatu.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-03-27 10:59:12 -04:00
..
act_api.c	net sched actions: fix dumping which requires several messages to user space	2018-03-27 10:59:12 -04:00
act_bpf.c	net/sched: fix idr leak on the error path of tcf_bpf_init()	2018-03-21 18:11:46 -04:00
act_connmark.c	net_sched: switch to exit_batch for action pernet ops	2017-12-13 13:58:41 -05:00
act_csum.c	net/sched: fix NULL dereference in the error path of tcf_csum_init()	2018-03-17 19:53:28 -04:00
act_gact.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-01-09 10:37:00 -05:00
act_ife.c	net_sched: switch to exit_batch for action pernet ops	2017-12-13 13:58:41 -05:00
act_ipt.c	net/sched: fix idr leak in the error path of __tcf_ipt_init()	2018-03-21 18:12:16 -04:00
act_meta_mark.c	net: remove duplicate includes	2017-12-13 13:18:46 -05:00
act_meta_skbprio.c	net sched actions: change IFE modules alias names	2017-10-12 22:13:20 -07:00
act_meta_skbtcindex.c	net: remove duplicate includes	2017-12-13 13:18:46 -05:00
act_mirred.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-01-09 10:37:00 -05:00
act_nat.c	net_sched: switch to exit_batch for action pernet ops	2017-12-13 13:58:41 -05:00
act_pedit.c	net/sched: fix idr leak in the error path of tcp_pedit_init()	2018-03-21 18:12:08 -04:00
act_police.c	net/sched: fix idr leak in the error path of tcf_act_police_init()	2018-03-21 18:12:00 -04:00
act_sample.c	net/sched: fix NULL dereference in the error path of tcf_sample_init()	2018-03-17 19:53:28 -04:00
act_simple.c	net/sched: fix idr leak in the error path of tcf_simp_init()	2018-03-21 18:11:53 -04:00
act_skbedit.c	net_sched: switch to exit_batch for action pernet ops	2017-12-13 13:58:41 -05:00
act_skbmod.c	net/sched: fix idr leak in the error path of tcf_skbmod_init()	2018-03-21 18:12:37 -04:00
act_tunnel_key.c	net/sched: fix NULL dereference in the error path of tunnel_key_init()	2018-03-17 19:53:28 -04:00
act_vlan.c	net/sched: fix idr leak in the error path of tcf_vlan_init()	2018-03-21 18:12:27 -04:00
cls_api.c	net: sched: report if filter is too large to dump	2018-02-20 21:57:17 -05:00
cls_basic.c	cls_basic: Convert to use idr_alloc_u32	2018-02-06 16:41:26 -05:00
cls_bpf.c	cls_bpf: Convert to use idr_alloc_u32	2018-02-06 16:41:26 -05:00
cls_cgroup.c	net: sched: propagate extack to cls->destroy callbacks	2018-01-24 16:01:09 -05:00
cls_flow.c	net: sched: propagate extack to cls->destroy callbacks	2018-01-24 16:01:09 -05:00
cls_flower.c	cls_flower: Convert to idr_alloc_u32	2018-02-06 16:41:26 -05:00
cls_fw.c	net: sched: propagate extack to cls->destroy callbacks	2018-01-24 16:01:09 -05:00
cls_matchall.c	cls_matchall: propagate extack to delete callback	2018-01-24 16:01:10 -05:00
cls_route.c	net: sched: propagate extack to cls->destroy callbacks	2018-01-24 16:01:09 -05:00
cls_rsvp.c
cls_rsvp.h	net: sched: propagate extack to cls->destroy callbacks	2018-01-24 16:01:09 -05:00
cls_rsvp6.c
cls_tcindex.c	net: sched: propagate extack to cls->destroy callbacks	2018-01-24 16:01:09 -05:00
cls_u32.c	net: sched: fix tc_u_common lookup	2018-02-13 12:29:02 -05:00
em_canid.c
em_cmp.c
em_ipset.c	netfilter: x_tables: move hook state into xt_action_param structure	2016-11-03 10:56:21 +01:00
em_meta.c	net: convert sock.sk_refcnt from atomic_t to refcount_t	2017-07-01 07:39:08 -07:00
em_nbyte.c	net: sched: em_nbyte: don't add the data offset twice	2018-01-24 14:52:40 -05:00
em_text.c
em_u32.c
ematch.c	net: sched: ematch: obtain net pointer from blocks	2017-10-16 21:00:40 +01:00
Kconfig	net/sched: kconfig: Remove blank help texts	2018-01-31 10:26:30 -05:00
Makefile	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
sch_api.c	net: sched: introduce ingress/egress block index attributes for qdisc	2018-01-17 14:53:57 -05:00
sch_atm.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_blackhole.c	net_sched: drop packets after root qdisc lock is released	2016-06-25 12:19:35 -04:00
sch_cbq.c	net: sch: sch_cbq: add extack support	2017-12-21 12:32:51 -05:00
sch_cbs.c	net: sch: sch_cbs: add extack support	2017-12-21 12:32:51 -05:00
sch_choke.c	net: sched: sch: add extack for change qdisc ops	2017-12-21 12:32:50 -05:00
sch_codel.c	net: sched: sch: add extack for change qdisc ops	2017-12-21 12:32:50 -05:00
sch_drr.c	net: sch: sch_drr: add extack support	2017-12-21 12:32:51 -05:00
sch_dsmark.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_fifo.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_fq.c	net: sched: sch: add extack for change qdisc ops	2017-12-21 12:32:50 -05:00
sch_fq_codel.c	net: sch: api: add extack support in tcf_block_get	2017-12-21 12:32:51 -05:00
sch_generic.c	net: sched, fix OOO packets with pfifo_fast	2018-03-26 12:36:23 -04:00
sch_gred.c	net: sched: sch: add extack for change qdisc ops	2017-12-21 12:32:50 -05:00
sch_hfsc.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_hhf.c	net: sched: sch: add extack for change qdisc ops	2017-12-21 12:32:50 -05:00
sch_htb.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_ingress.c	net: sched: allow ingress and clsact qdiscs to share filter blocks	2018-01-17 14:53:57 -05:00
sch_mq.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_mqprio.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_multiq.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_netem.c	sch_netem: fix skb leak in netem_enqueue()	2018-03-07 11:18:14 -05:00
sch_pie.c	net: sched: sch: add extack for change qdisc ops	2017-12-21 12:32:50 -05:00
sch_plug.c	net: sched: sch: add extack for change qdisc ops	2017-12-21 12:32:50 -05:00
sch_prio.c	net/sched/sch_prio.c: work around gcc-4.4.4 union initializer issues	2018-01-18 21:11:31 -05:00
sch_qfq.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_red.c	net: sched: red: don't reset the backlog on every stat dump	2018-01-17 14:29:32 -05:00
sch_sfb.c	net: sch: api: add extack support in qdisc_create_dflt	2017-12-21 12:32:51 -05:00
sch_sfq.c	net: sch: api: add extack support in tcf_block_get	2017-12-21 12:32:51 -05:00
sch_tbf.c	net: sched: tbf: handle GSO_BY_FRAGS case in enqueue	2018-03-04 17:49:17 -05:00
sch_teql.c	net: sched: sch: add extack for init callback	2017-12-21 12:32:50 -05:00