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Kees Cook 7cba18332e net: sched: cls_u32: Avoid memcpy() false-positive warning 
To work around a misbehavior of the compiler's ability to see into
composite flexible array structs (as detailed in the coming memcpy()
hardening series[1]), use unsafe_memcpy(), as the sizing,
bounds-checking, and allocation are all very tightly coupled here.
This silences the false-positive reported by syzbot:

  memcpy: detected field-spanning write (size 80) of single field "&n->sel" at net/sched/cls_u32.c:1043 (size 16)

[1] https://lore.kernel.org/linux-hardening/20220901065914.1417829-2-keescook@chromium.org

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Reported-by: syzbot+a2c4601efc75848ba321@syzkaller.appspotmail.com
Link: https://lore.kernel.org/lkml/000000000000a96c0b05e97f0444@google.com/
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://lore.kernel.org/r/20220927153700.3071688-1-keescook@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-29 18:44:07 -07:00
..
act_api.c
net: sched: act_api: implement generic walker and search for tc action
2022-09-09 08:24:41 +01:00
act_bpf.c
net: sched: act_bpf: simplify code logic in tcf_bpf_init()
2022-09-28 09:38:56 +01:00
act_connmark.c
net: sched: act_connmark: get rid of tcf_connmark_walker and tcf_connmark_search
2022-09-09 08:24:41 +01:00
act_csum.c
net: sched: act_csum: get rid of tcf_csum_walker and tcf_csum_search
2022-09-09 08:24:41 +01:00
act_ct.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-09-29 14:30:51 -07:00
act_ctinfo.c
net: sched: act_ctinfo: get rid of tcf_ctinfo_walker and tcf_ctinfo_search
2022-09-09 08:24:41 +01:00
act_gact.c
net: sched: act_gact: get rid of tcf_gact_walker and tcf_gact_search
2022-09-09 08:24:41 +01:00
act_gate.c
net: sched: act_gate: get rid of tcf_gate_walker and tcf_gate_search
2022-09-09 08:24:42 +01:00
act_ife.c
net: sched: act_ife: get rid of tcf_ife_walker and tcf_ife_search
2022-09-09 08:24:42 +01:00
act_ipt.c
net: sched: act_ipt: get rid of tcf_ipt_walker/tcf_xt_walker and tcf_ipt_search/tcf_xt_search
2022-09-09 08:24:42 +01:00
act_meta_mark.c
…
act_meta_skbprio.c
…
act_meta_skbtcindex.c
…
act_mirred.c
net: sched: remove unused tcf_result extension
2022-09-21 18:32:33 -07:00
act_mpls.c
net: sched: act_mpls: get rid of tcf_mpls_walker and tcf_mpls_search
2022-09-09 08:24:42 +01:00
act_nat.c
net: sched: act_nat: get rid of tcf_nat_walker and tcf_nat_search
2022-09-09 08:24:42 +01:00
act_pedit.c
net: sched: act_pedit: get rid of tcf_pedit_walker and tcf_pedit_search
2022-09-09 08:24:42 +01:00
act_police.c
net: sched: act_police: get rid of tcf_police_walker and tcf_police_search
2022-09-09 08:24:42 +01:00
act_sample.c
net: sched: act_sample: get rid of tcf_sample_walker and tcf_sample_search
2022-09-09 08:24:42 +01:00
act_simple.c
net: sched: act_simple: get rid of tcf_simp_walker and tcf_simp_search
2022-09-09 08:24:42 +01:00
act_skbedit.c
net: sched: act_skbedit: get rid of tcf_skbedit_walker and tcf_skbedit_search
2022-09-09 08:24:42 +01:00
act_skbmod.c
net: sched: act_skbmod: get rid of tcf_skbmod_walker and tcf_skbmod_search
2022-09-09 08:24:42 +01:00
act_tunnel_key.c
net: sched: act_tunnel_key: get rid of tunnel_key_walker and tunnel_key_search
2022-09-09 08:24:42 +01:00
act_vlan.c
net: sched: act_vlan: get rid of tcf_vlan_walker and tcf_vlan_search
2022-09-09 08:24:43 +01:00
cls_api.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-09-22 13:02:10 -07:00
cls_basic.c
net/sched: use tc_cls_stats_dump() in filter
2022-09-20 15:54:13 -07:00
cls_bpf.c
net/sched: use tc_cls_stats_dump() in filter
2022-09-20 15:54:13 -07:00
cls_cgroup.c
…
cls_flow.c
net/sched: use tc_cls_stats_dump() in filter
2022-09-20 15:54:13 -07:00
cls_flower.c
net/sched: flower: Add L2TPv3 filter
2022-09-20 09:13:38 +02:00
cls_fw.c
net/sched: use tc_cls_stats_dump() in filter
2022-09-20 15:54:13 -07:00
cls_matchall.c
net: sched: simplify code in mall_reoffload
2022-09-21 18:22:04 -07:00
cls_route.c
net/sched: use tc_cls_stats_dump() in filter
2022-09-20 15:54:13 -07:00
cls_rsvp6.c
…
cls_rsvp.c
…
cls_rsvp.h
net/sched: use tc_cls_stats_dump() in filter
2022-09-20 15:54:13 -07:00
cls_tcindex.c
net/sched: use tc_cls_stats_dump() in filter
2022-09-20 15:54:13 -07:00
cls_u32.c
net: sched: cls_u32: Avoid memcpy() false-positive warning
2022-09-29 18:44:07 -07:00
em_canid.c
…
em_cmp.c
…
em_ipset.c
…
em_ipt.c
…
em_meta.c
net_sched: em_meta: add READ_ONCE() in var_sk_bound_if()
2022-05-16 10:31:06 +01:00
em_nbyte.c
…
em_text.c
…
em_u32.c
…
ematch.c
…
Kconfig
…
Makefile
…
sch_api.c
net: sched: remove duplicate check of user rights in qdisc
2022-08-23 10:18:26 +02:00
sch_atm.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_blackhole.c
…
sch_cake.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_cbq.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_cbs.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_choke.c
net: sched: choke: remove unused variables in struct choke_sched_data
2022-08-31 19:39:53 -07:00
sch_codel.c
net: sched: remove redundant NULL check in change hook function
2022-09-01 08:06:45 +02:00
sch_drr.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_dsmark.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_etf.c
net: sched: etf: remove true check in etf_enable_offload()
2022-09-01 20:08:32 -07:00
sch_ets.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_fifo.c
…
sch_fq_codel.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_fq_pie.c
net: sched: remove redundant NULL check in change hook function
2022-09-01 08:06:45 +02:00
sch_fq.c
net: sched: remove redundant NULL check in change hook function
2022-09-01 08:06:45 +02:00
sch_frag.c
…
sch_generic.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-09-01 12:58:02 -07:00
sch_gred.c
net: sched: gred: remove NULL check before free table->tab in gred_destroy()
2022-09-01 13:32:26 +02:00
sch_hfsc.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_hhf.c
net: sched: remove redundant NULL check in change hook function
2022-09-01 08:06:45 +02:00
sch_htb.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_ingress.c
…
sch_mq.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_mqprio.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_multiq.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_netem.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_pie.c
net: sched: remove redundant NULL check in change hook function
2022-09-01 08:06:45 +02:00
sch_plug.c
net: sched: remove redundant NULL check in change hook function
2022-09-01 08:06:45 +02:00
sch_prio.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_qfq.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_red.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_sfb.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_sfq.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_skbprio.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_taprio.c
net/sched: taprio: simplify list iteration in taprio_dev_notifier()
2022-09-26 12:38:39 -07:00
sch_tbf.c
net/sched: use tc_qdisc_stats_dump() in qdisc
2022-09-22 17:34:10 -07:00
sch_teql.c
net: sched: delete duplicate cleanup of backlog and qlen
2022-08-25 15:10:17 +02:00