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linux/net/sched
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Cong Wang 1df94c3c5d net_sched: properly check for empty skb array on error path 
First, the check of &q->ring.queue against NULL is wrong, it
is always false. We should check the value rather than the address.

Secondly, we need the same check in pfifo_fast_reset() too,
as both ->reset() and ->destroy() are called in qdisc_destroy().

Fixes: c5ad119fb6 ("net: sched: pfifo_fast use skb_array")
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2017-12-19 14:13:12 -05:00
..
Kconfig net/sched: Introduce Credit Based Shaper (CBS) qdisc 2017-10-27 09:48:02 -07:00
Makefile Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
act_api.c net_sched: remove unused parameter from act cleanup ops 2017-12-05 18:07:58 -05:00
act_bpf.c net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
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: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
act_gact.c net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -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: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
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 net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -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: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
act_police.c net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
act_sample.c net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
act_simple.c net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
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: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
act_tunnel_key.c net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
act_vlan.c net_sched: switch to exit_batch for action pernet ops 2017-12-13 13:58:41 -05:00
cls_api.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-16 22:11:55 -05:00
cls_basic.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
cls_bpf.c cls_bpf: don't decrement net's refcount when offload fails 2017-11-28 15:49:44 -05:00
cls_cgroup.c cls_cgroup: use tcf_exts_get_net() before call_rcu() 2017-11-09 10:03:09 +09:00
cls_flow.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
cls_flower.c flow_dissector: dissect tunnel info outside __skb_flow_dissect() 2017-12-05 12:09:18 -05:00
cls_fw.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
cls_matchall.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
cls_route.c cls_route: use tcf_exts_get_net() before call_rcu() 2017-11-09 10:03:10 +09:00
cls_rsvp.c
…
cls_rsvp.h cls_rsvp: use tcf_exts_get_net() before call_rcu() 2017-11-09 10:03:10 +09:00
cls_rsvp6.c
…
cls_tcindex.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
cls_u32.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
em_canid.c net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
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: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
em_text.c net: Remove state argument from skb_find_text() 2015-02-22 15:59:54 -05:00
em_u32.c
…
ematch.c net: sched: ematch: obtain net pointer from blocks 2017-10-16 21:00:40 +01:00
sch_api.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-16 22:11:55 -05:00
sch_atm.c net: sched: store Qdisc pointer in struct block 2017-10-16 21:00:40 +01:00
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: sched: cbq: create block for q->link.block 2017-11-28 16:04:26 -05:00
sch_cbs.c net_sch: cbs: Change TC_SETUP_CBS to TC_SETUP_QDISC_CBS 2017-11-08 12:23:38 +09:00
sch_choke.c net_sched: red: Avoid illegal values 2017-12-05 14:37:13 -05:00
sch_codel.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_drr.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_dsmark.c net: sched: store Qdisc pointer in struct block 2017-10-16 21:00:40 +01:00
sch_fifo.c sched: don't use skb queue helpers 2016-09-19 01:47:18 -04:00
sch_fq.c mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic 2017-07-12 16:26:03 -07:00
sch_fq_codel.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_generic.c net_sched: properly check for empty skb array on error path 2017-12-19 14:13:12 -05:00
sch_gred.c net_sched: red: Avoid illegal values 2017-12-05 14:37:13 -05:00
sch_hfsc.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_hhf.c sch_hhf: fix null pointer dereference on init failure 2017-08-30 15:26:11 -07:00
sch_htb.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_ingress.c net: sched: fix static key imbalance in case of ingress/clsact_init error 2017-12-15 15:43:12 -05:00
sch_mq.c net: sched: add support for TCQ_F_NOLOCK subqueues to sch_mqprio 2017-12-08 13:32:26 -05:00
sch_mqprio.c net: sched: add support for TCQ_F_NOLOCK subqueues to sch_mqprio 2017-12-08 13:32:26 -05:00
sch_multiq.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_netem.c netem: remove unnecessary 64 bit modulus 2017-11-15 14:14:16 +09:00
sch_pie.c net: sched: Convert timers to use timer_setup() 2017-10-18 12:39:54 +01:00
sch_plug.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_prio.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_qfq.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_red.c net: sched: Move to new offload indication in RED 2017-12-15 13:35:36 -05:00
sch_sfb.c net: sched: mark expected switch fall-throughs 2017-10-22 02:07:08 +01:00
sch_sfq.c net_sched: red: Avoid illegal values 2017-12-05 14:37:13 -05:00
sch_tbf.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
sch_teql.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00