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linux-stable/net/sched
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Cong Wang 06bb398e7e net_sched: fix a memory leak in atm_tc_init() 
[ Upstream commit 306381aec7 ]

When tcf_block_get() fails inside atm_tc_init(),
atm_tc_put() is called to release the qdisc p->link.q.
But the flow->ref prevents it to do so, as the flow->ref
is still zero.

Fix this by moving the p->link.ref initialization before
tcf_block_get().

Fixes: 6529eaba33 ("net: sched: introduce tcf block infractructure")
Reported-and-tested-by: syzbot+d411cff6ab29cc2c311b@syzkaller.appspotmail.com
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-22 09:22:20 +02:00
..
act_api.c net: avoid potential infinite loop in tc_ctl_action() 2019-10-29 09:17:03 +01:00
act_bpf.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_connmark.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_csum.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_gact.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_ife.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_ipt.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_meta_mark.c
act_meta_skbprio.c
act_meta_skbtcindex.c
act_mirred.c act_mirred: Fix mirred_init_module error handling 2020-01-27 14:46:49 +01:00
act_nat.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_pedit.c net/sched: act_pedit: fix WARN() in the traffic path 2019-12-01 09:13:11 +01:00
act_police.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_sample.c net/sched: act_sample: don't push mac header on ip6gre ingress 2019-10-05 12:47:40 +02:00
act_simple.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_skbedit.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_skbmod.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_tunnel_key.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
act_vlan.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:32:20 +01:00
cls_api.c net_sched: refetch skb protocol for each filter 2019-01-31 08:13:41 +01:00
cls_basic.c cls_basic: use tcf_exts_get_net() before call_rcu() 2017-11-09 10:03:09 +09:00
cls_bpf.c cls_bpf: don't decrement net's refcount when offload fails 2017-12-17 15:07:59 +01:00
cls_cgroup.c cls_cgroup: use tcf_exts_get_net() before call_rcu() 2017-11-09 10:03:09 +09:00
cls_flow.c cls_flow: use tcf_exts_get_net() before call_rcu() 2017-11-09 10:03:09 +09:00
cls_flower.c net: sched: correct flower port blocking 2020-03-11 18:02:48 +01:00
cls_fw.c cls_fw: use tcf_exts_get_net() before call_rcu() 2017-11-09 10:03:09 +09:00
cls_matchall.c net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS 2020-02-28 16:36:09 +01:00
cls_route.c net_sched: cls_route: remove the right filter from hashtable 2020-04-02 16:34:24 +02:00
cls_rsvp.c
cls_rsvp.h cls_rsvp: fix rsvp_policy 2020-02-14 16:32:06 -05:00
cls_rsvp6.c
cls_tcindex.c net_sched: keep alloc_hash updated after hash allocation 2020-04-02 16:34:24 +02:00
cls_u32.c net: sched: Fix memory exposure from short TCA_U32_SEL 2018-09-15 09:45:24 +02:00
em_canid.c
em_cmp.c
em_ipset.c
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
em_text.c
em_u32.c
ematch.c net_sched: ematch: reject invalid TCF_EM_SIMPLE 2020-02-05 14:18:09 +00:00
Kconfig net: sched: select cls when cls_act is enabled 2017-06-05 10:56:36 -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
sch_api.c net_sched: check cops->tcf_block in tc_bind_tclass() 2019-11-06 12:43:22 +01:00
sch_atm.c net_sched: fix a memory leak in atm_tc_init() 2020-07-22 09:22:20 +02:00
sch_blackhole.c net_sched: blackhole: tell upper qdisc about dropped packets 2018-07-22 14:28:46 +02:00
sch_cbq.c sch_cbq: validate TCA_CBQ_WRROPT to avoid crash 2019-10-07 18:55:21 +02:00
sch_choke.c sch_choke: avoid potential panic in choke_reset() 2020-05-20 08:16:54 +02:00
sch_codel.c net: sched: Fix a possible null-pointer dereference in dequeue_func() 2019-08-09 17:53:35 +02:00
sch_drr.c net_sched: remove tc class reference counting 2017-08-25 17:19:10 -07:00
sch_dsmark.c sch_dsmark: fix potential NULL deref in dsmark_init() 2019-10-07 18:55:19 +02:00
sch_fifo.c
sch_fq.c net: fq: add missing attribute validation for orphan mask 2020-03-20 10:54:11 +01:00
sch_fq_codel.c fq_codel: fix TCA_FQ_CODEL_DROP_BATCH_SIZE sanity checks 2020-05-20 08:16:53 +02:00
sch_generic.c net: sched: export __netdev_watchdog_up() 2020-06-30 15:37:57 -04:00
sch_gred.c net: sched: gred: pass the right attribute to gred_change_table_def() 2018-11-04 14:52:48 +01:00
sch_hfsc.c net_sched/hfsc: fix curve activation in hfsc_change_class() 2017-09-21 11:56:32 -07:00
sch_hhf.c net/flow_dissector: switch to siphash 2019-11-10 11:25:37 +01:00
sch_htb.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
sch_ingress.c net: sched: fix static key imbalance in case of ingress/clsact_init error 2018-01-02 20:31:12 +01:00
sch_mq.c net: sched: fix tc -s class show no bstats on class with nolock subqueues 2019-12-05 15:38:19 +01:00
sch_mqprio.c net: sched: fix tc -s class show no bstats on class with nolock subqueues 2019-12-05 15:38:19 +01:00
sch_multiq.c net: sched: fix tc -s class show no bstats on class with nolock subqueues 2019-12-05 15:38:19 +01:00
sch_netem.c net: netem: correct the parent's backlog when corrupted packet was dropped 2020-01-27 14:46:50 +01:00
sch_pie.c
sch_plug.c
sch_prio.c net: sch_prio: When ungrafting, replace with FIFO 2020-01-12 12:12:08 +01:00
sch_qfq.c sched: Use __qdisc_drop instead of kfree_skb in sch_prio and sch_qfq 2017-09-06 21:20:07 -07:00
sch_red.c net: sched: red: avoid hashing NULL child 2018-05-25 16:17:23 +02:00
sch_sfb.c net/flow_dissector: switch to siphash 2019-11-10 11:25:37 +01:00
sch_sfq.c sch_sfq: validate silly quantum values 2020-05-20 08:16:54 +02:00
sch_tbf.c net: create skb_gso_validate_mac_len() 2019-02-20 10:20:48 +01:00
sch_teql.c